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  • A Temporal-Spatial Interpolation and Extrapolation Method Based on Geographic Long Short-Term Memory Neural Network for PM2.5
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-22
    M.A. Jun, Yuexiong DING, Jack C.P. CHENG, Feifeng JIANG, Zhiwei WAN

    Nowadays, real-time air pollution monitoring has been an important approach for supporting pollution control and reduction. However, due to the high construction cost and limited detection range of monitoring stations, not all the air pollutant concentrations in every corner can be monitored, and a whole picture of the spatial distribution of air pollution is usually lacked for comprehensive spatial analysis and air quality control. To address this problem, satellite remote sensing and spatial interpolation/extrapolation technologies have been commonly used in past research. However, the spatial distribution calculated by remote sensing techniques could be less accurate due to the limited amount of recorded data for testing and adjustments. Performance of traditional spatial interpolation/extrapolation techniques, such as Kriging and IDW, was limited by several subjective assumptions and pre-set formulations that are less suitable for non-linear real-world situations. As an alternative, machine learning and neural network-based methods have been proposed recently. However, most of these methods failed to well consider the long short temporal trend and spatial associations of air pollution simultaneously. To overcome these limitations, this paper proposed a newly designed spatial interpolation/extrapolation methodology namely Geo-LSTM to generate the spatial distribution of air pollutant concentrations. The model was developed based on the Long Short-Term Memory (LSTM) neural network to capture the long-term dependencies of air quality. A geo-layer was designed to integrate the spatial-temporal correlation from other monitoring stations. To evaluate the effectiveness of the proposed methodology, a case study in Washington state was conducted. The experimental results show that Geo-LSTM has a RMSE of 0.0437, and is almost 60.13% better than traditional methods like IDW.

    更新日期:2019-07-22
  • α-Chymotrypsin catalysed oligopeptide synthesis for hair modelling
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-22
    Madalena Martins, Carla Silva, Artur Cavaco-Paulo
    更新日期:2019-07-22
  • Geopolymer-hydrotalcite composites for CO2 capture
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-22
    E. Papa, V. Medri, C. Paillard, B. Contri, A. Natali Murri, A. Vaccari, E. Landi

    Supporting or shaping a porous powder is important for industrial applications as optimized structure with high mass transfer, low pressure drop and high mechanical and chemical stability can be obtained. A new class of geopolymer-hydrotalcite composites with suitable mechanical and thermal properties were conceived as shaped materials for CO2 adsorption applications at intermediate temperature (200-400 °C). Composite monoliths were produced mixing different commercial hydrotalcite-type (HyT) powders with a metakaolin-based geopolymer matrix with a molar ratio SiO2:Al2O3 = 4.0. The compressive strength at room temperature and 500 °C ranged between 10 and 35 MPa, mainly depending on HyT powder morphology and composite total porosity. The composites were characterized and tested in term of CO2 uptake. After calcination to convert HyT into an amorphous Mg:Al mixed solid oxide able to absorb CO2, the composites were tested in the CO2 adsorption at 200 °C, with cycles of adsorption/desorption performed with intermediate regeneration at 500 °C. CO2 adsorption capacity was in the range 0.375-0.461 mmol g-1 for HyT and between 0.109 and 0.145 mmol g-1 for composites, being 0.052 mmol g-1 the value for the geopolymer matrix. A partial deactivation of the HyT phases was also detected.

    更新日期:2019-07-22
  • The effect of urbanization on environmental pollution in rapidly developing urban agglomerations
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-22
    Longwu Liang, Zhenbo Wang, Jiaxin Li

    China is experiencing a rapid urbanization that is unprecedented in human history. This has significantly improved the well-being of residents, but has also caused serious environmental problems in the Beijing-Tianjin-Hebei urban agglomeration (BTHUA). Therefore, the study constructed the indexes of urbanization and environmental pollution based on the existing literature, used the analytic hierarchy process, entropy method and the principle of minimum information entropy to obtain the subjective, objective and comprehensive weights of the evaluation indexes respectively, and took BTHUA as an example to study the effects of urbanization elements and subsystems on environmental pollution from 2000 to 2015 by using geographically and temporally weighted regression model. This study reached the following conclusions. (1) The urbanization index increased rapidly from 0.157 in 2000 to 0.438 by 2015. National policies have significant impacts on environmental protection in urban agglomerations. (2) The service industry level, fiscal revenue, resident income, education level, Internet application were factors that reduced environmental pollution. The urbanization rate, population agglomeration, economic development, industrial development, urban construction, and transportation construction were factors that aggravated environmental pollution. (3) The impacts of urbanization on environmental pollution fluctuated periodically, with the period of fluctuation being consistent with China's five-year plan. National policy has significantly promoted the coordinated development of urbanization and environmental protection, although there was a lag effect. The effects of the trends in population, economic, social, spatial, and comprehensive urbanization factors on environmental pollution were basically the same, but the degree of each effect differed. (4) Urbanization improved the environmental quality in mountainous areas, but aggravated the degree of local environmental pollution in plains and coastal areas. The rate of urbanization of urban agglomerations differed, with the rate of urbanization lagging behind in mountainous areas, whereas it was excessive in plains and coastal areas.

    更新日期:2019-07-22
  • Corporate governance and board of directors: the effect of a board composition on firm sustainability performance
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-22
    Valeria Naciti

    Sustainable Development Goals are setting a new global target on sustainability, for which corporates are expected to play an important role through sustainable practices. One of the approaches to engaging corporate to sustainable practices focuses on the board composition. The literature shows that the composition of board influences corporate's financial performance. However, the relationships between the composition of boards and corporate's sustainability practices are not empirically examined. This study empirically analyzes whether the composition of the Board of Directors affects firms’ sustainability performance. Specifically, the analysis focuses on key corporate governance characteristics – namely board diversity, board independence and CEO duality – and seeks to assess the effect they have on social and environmental sustainability components. Hypotheses are developed based on the agency theory and stakeholder theory. Using a system generalized method of moment two-step estimator, with data from Sustainalytics and Compustat databases for 362 firms in 46 different countries, we find that firms with more diversity on the board and a separation between chair and CEO roles show higher sustainability performance. Moreover, our findings reveal that a higher number of independent directors leads to lower sustainability performance. This study contributes to the literature on corporate governance and the firm’s performance by demonstrating that the composition of the board of directors affects the firm’s sustainability performance.

    更新日期:2019-07-22
  • The relationships between values, belief, personal norms, and climate conserving behaviors of Malaysian primary school students
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-22
    Mageswary Karpudewan

    Climate change is a daunting phenomenon that requires serious and urgent attention from various stakeholders. The severity of the extreme weather changes has urged the weather and climate to be an integral part of mainstream education. However, the aim of the contemporary climate change education in cultivating behavioral change is in vain. This is because the physiological concerns that explain the behavior were ignored in designing the curriculum. This notion has prompted the researcher to determine the relationship between values, belief, personal norms, and climate change behaviors and subsequently model the climate conservation behaviors. For this purpose, a survey questionnaire was administered to 300 Year 5 and Year 6 primary school students. The questionnaire consisted of items measured on values, belief, personal norms, and climate conserving behaviors. The data was then analyzed using Partial Least Square-Structural Equation approach. The findings revealed that there were significant positive relationships between values and belief; values and personal norms; values and behavior; belief and personal norms; belief and behaviors; and personal norms and behaviors. The Goodness of Fit index indicated that the overall model has excellent exploratory power in comparison to the baseline values. The model offers a guide in designing climate change curriculum and training the teachers in teaching about climate change in primary schools.

    更新日期:2019-07-22
  • Respond of clay amendment in chicken manure composts to understand the antibiotic resistant bacterial diversity and its correlation with physicochemical parameters
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-22
    Mukesh Kumar Awasthi, Hongyu Chen, Tao Liu, Sanjeev Kumar Awasthi, Quan Wang, Xiuna Ren, Yumin Duan, Zengqiang Zhang
    更新日期:2019-07-22
  • Enhancing effect of microalgae biodiesel incorporation on the performance of crumb Rubber/SBS modified asphalt
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-22
    Shaochan Duan, Yaseen Muhammad, Jing Li, Sahibzada Maria, Fei Meng, Yunhao Wei, Zhibin Su, Hongquan Yang
    更新日期:2019-07-22
  • Learning about spatial inequalities: Capturing the heterogeneity in the urban environment
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-22
    Juliana Siqueira-Gay, Mariana Abrantes Giannotti, Ing habil Monika Sester
    更新日期:2019-07-22
  • Reuse of reclaimed tire rubber for gas-separation membranes prepared by hot-pressing
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-22
    Hui-Hsin Tseng, Zi-Yi Lin, Shih-Hsiung Chen, Wen-Hsiung Lai, Ming-Yen Wey
    更新日期:2019-07-22
  • A comparative study of approaches towards energy efficiency and renewable energy use at Higher Education Institutions
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-22
    Walter Leal Filho, Amanda Lange Salvia, Arminda do Paço, Rosley Anholon, Osvaldo Luiz Gonçalves Quelhas, Izabela Simon Rampasso, Artie Ng, Abdul-Lateef Balogun, Bozhil Kondev, Luciana Londero Brandli

    The potential for energy efficiency and for the deployment of renewable energy at universities is substantial, and they represent promising ways to meet an institution’s energy needs on the one hand, without a large climate burden on the other. However, in order to achieve successful investment and results, it is imperative to understand the level of current commitment to energy actions. Therefore, this paper investigates the level of engagement in energy efficiency measures of a sample of 50 higher education institutions from round the world, and identifies which types of renewable energy are being used to date. Results show that in more than half of the universities only a small portion of energy consumption comes from renewable sources (1% to 20%) and solar/photovoltaics is the most used source (70%). Investment in energy efficiency is more common in the sample, with 54% of the universities reporting higher levels of engagement, mainly in buildings (78%) and equipment/machineries (56%). Departing from the assumption that sustainable energy use is a pre-condition for campuses to pursue sustainability, the paper identifies current deficiencies and discusses improvements in this key area, with experiences which may be replicable elsewhere.

    更新日期:2019-07-22
  • Transport pathways of PM10 during the spring in northwest China and its characteristics of potential dust sources
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-22
    Qingyu Guan, Yanyan Yang, Haiping Luo, Rui Zhao, Ninghui Pan, Jinkuo Lin, Liqin Yang
    更新日期:2019-07-22
  • Evaluation of heat irreversibility in couple stress falling liquid films along heated inclined substrate
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-22
    Samuel O. Adesanya, A.S. Onanaye, O.G. Adeyemi, Mohammad Rahimi-Gorji, Ibrahim M. Alarifi

    In the present work, the analysis of entropy generation in a gravity-aided thin couple stress liquid film in an inclined heated substrate is investigated. The thin substrate layer is assumed to be porous and governed by Darcy law. Exact solutions of the dimensionless field equations are obtained and used to determine the rate of entropy is produced along the inclined plate. Velocity, temperature, entropy generation and Bejan profiles are presented for different parameter cases. The result of the analysis revealed the significance of both slip and porous permeability parameters on entropy generation rate and the effects of both modified Navier slip and porous permeability parameters on the entropy generation rate turns out to be large at the free surface of the porous substrate and must be controlled for sustainable and efficient production.

    更新日期:2019-07-22
  • Enhanced denitrification by design modifications to the standard permeable pavement structure
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-22
    Upeka Kuruppu, Ataur Rahman, Arumugam Sathasivan
    更新日期:2019-07-22
  • Laboratory pullout investigation for evaluate feasibility use of scrap tire as reinforcement element in mechanically stabilized earth walls
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-22
    M. Tajabadipour, M. Dehgani, B. Kalantari, S.H. Lajevardi

    This study aims to investigate the feasibility of utilizing the scrap tire as the reinforcement element in the Mechanically Stabilized Earth Walls (MSEWs). More than 50 laboratory large-scale pullout tests (i.e. 1.40 m × 0.8 m × 0.8 m) under different normal stresses were conducted to evaluate the performance of the newly suggested reinforcement element that made up of the scrap tire which is called Geo Scrap Tire (GST). The dimension optimization analysis performed for the GST strip, and the width of 70 mm, selected as the optimum width. The part of the scrap tire was used as transversal members on the GST strip in order to increase the pullout resistance and to use the side of the scrap tire. Laboratory pullout tests were validated with the theoretical analysis and compared to other conventional strip reinforcement elements such as the steel strip and the geosynthetic. The experimental pullout results showed that the innovative suggested reinforcement element performed better than the other strips so that the GST strip was capable of increasing pullout resistance by more than 2 and 2.5 times compared to the geosynthetic strip and the steel strip. Moreover, the use of four transverse members resulted in the highest pullout resistance and the least interference; this system might increase the maximum pullout resistance more than 3 and 4 times related to the geosynthetic strip and the steel strip.

    更新日期:2019-07-22
  • Consumers’ intention-based influence factors of renewable power generation technology utilization: a structural equation modeling approach
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-22
    Gul Jabeen, Qingyou Yan, Munir Ahmad, Nousheen Fatima, Shoaib Qamar
    更新日期:2019-07-22
  • 更新日期:2019-07-22
  • One pot Green Synthesis of Nano magnesium oxide-carbon composite: Preparation, characterization and application towards anthracene adsorption
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-21
    J. Aravind Kumar, D. Joshua Amarnath, S. Anuradha Jabasingh, P. Senthil Kumar, K. VijaiAnand, G. Narendrakumar, S. Karthick Raja Namasivayam, T. Krithiga, Samson Sunny, Purna, D. Yuvarajan
    更新日期:2019-07-21
  • Multi-objective optimization of green technology thermal drilling process using grey-fuzzy logic method
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-21
    R. Kumar, N. Rajesh Jesudoss Hynes, Catalin Iulian Pruncu, J. Angela Jennifa Sujana
    更新日期:2019-07-21
  • Decontamination of petroleum-contaminated soil via pyrolysis under carbon dioxide atmosphere
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-21
    Youkwan Kim, Jeong-Ik Oh, Sang Soo Lee, Kyun Ho Lee, Jechan Lee, Eilhann E. Kwon

    Accidental leakage and/or spillage of crude oil contaminates soil occurring during petroleum extraction, which can have harmful effects both on the environment and human beings. Therefore, petroleum-contaminated soil needs to be effectively decontaminated. As a study of thermal remediation of petroleum-contaminated soil, a real soil sample contaminated with petroleum was pyrolyzed at different pyrolysis conditions. In particular, carbon dioxide (CO2) was used as the pyrolysis medium for effective thermal remediation of the petroleum-contaminated soil. At temperatures above 620 °C, pyrolytic gas evolution patterns obtained in CO2 condition were distinguishable from those obtained in N2 condition; the generation of carbon monoxide (CO) was observed. The formation of CO at temperatures higher than 620 °C might be a clue about the role of CO2 in pyrolysis of the petroleum-contaminated soil in that CO2 helps form CO via reactions between CO2 and volatile species evolved from the petroleum hydrocarbons deposited on the soil during the pyrolysis. For further investigating the effect of CO2 on the pyrolysis, two-stage pyrolysis of the petroleum-contaminated soil was conducted. The CO evolution also occurred in the CO2 condition during the two-stage pyrolysis at >210 °C. The different compositions of pyrolytic oil obtained from the pyrolysis in N2 and CO2 were identified in that the formation of polycyclic aromatic hydrocarbons was restricted by the consuming the source of carbon. The pyrolysis operated under CO2 atmosphere would be an effective decontamination method to treat petroleum-contaminated soil.

    更新日期:2019-07-21
  • Alleviating urban heat island effect using high-conductivity permeable concrete pavement
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-21
    Jiaqi Chen, Renxin Chu, Hao Wang, Lanchun Zhang, Xiaodan Chen, Yinfei Du

    This paper investigated the potential of using high-conductivity permeable concrete pavement in alleviating urban heat island (UHI) effect in both dry and wet conditions. The high-conductivity permeable concrete was prepared by adding steel fibers into traditional permeable concrete. Laboratory tests were conducted to backcalculate thermal conductivity of permeable concrete using the measured temperature files and thermal transfer models. The indoor experiments with controlled thermal radiation and water spray were conducted to measure surface temperatures of permeable concrete slabs in dry and wet conditions. Finite element models were developed to simulate thermal behavior of permeable concrete pavement and the simulation model results were found in good agreement with the indoor temperature measurements. The results showed that the permeable concrete slabs have the higher surface temperature than conventional concrete slab in dry conditions, but similar or lower surface temperatures in the wet condition, depending on water evaporation rate. The peak surface temperature of high-conductivity permeable concrete was 1–3 °C lower than that of conventional permeable concrete due to high thermal condition. The simulation results of outdoor environment show that permeable concrete pavement caused slightly greater heat output on sunny days but much smaller heat output on rainy days to the near-surface environment, as compared to conventional concrete pavement. The increase of thermal conductivity of permeable pavement can further reduce the heat output by 2.5–5.2%. The study findings prove that the high-conductivity permeable concrete is an effective method to alleviate UHI effect in dry and wet conditions.

    更新日期:2019-07-21
  • Manufacturing conversion cost reduction using quality control tools and digitization of real-time data
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-20
    Veer Shivajee, Rajesh Kr Singh, Sanjay Rastogi

    Two-wheeler automobile manufacturers in India are currently facing a big pressure to reduce the overall manufacturing cost in order to sustain the position in hypercompetitive domestic and global market. The manufacturing conversion cost is one part of the overall manufacturing cost. It consists of three major components i.e. product or parts scrap cost, consumables cost and tool cost. The scrap cost is the cost of defective products, which are not produced in accordance with standard and can’t be sent to market. The consumables cost is the cost of other than basic raw material used in manufacturing i.e. filters, filler materials, fuel, gases, chemical, coolant and lubricants etc. This study has tried to emphasise role of conversion cost in making organisations cost competitive. Case study-based approach is used in this study. The case manufacturing system comprises three main processes: machine shop, frame plant (weld and paint shop) and assembly shop. In frame plant, paint shop and weld shop are the two main sub sections of this automobile manufacturing. More than 50% of overall manufacturing conversion cost is consumed in these two areas. This study attempts to illustrate the reduction of the manufacturing conversion cost by prioritizing and analysing the cost factors using DMAIC (define-measure-analyze-improve-control) approach using quality control (QC) tools like Pareto chart, Cause & effect diagram and digitization of real time data. Authors have identified eighteen elements of conversion cost in this study. It has been observed from this study that even small saving in conversion cost per vehicle i.e. INR 24.18 (0.35 US$) per vehicle has resulted in annual saving of 2.2 millionUSD.Initiatives taken by this organisation for cost saving has also resulted in cleaner production and more sustainable manufacturing processes. Findings will be motivating to other manufacturers for reducing manufacturing cost using QC tools on smaller and insignificant activities.

    更新日期:2019-07-21
  • Clean synthesis and characterization of green nanostructured polymeric thin films from endogenous Mg (II) ions coordinated methylolated-Cashew nutshell liquid
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-20
    Fahmina Zafar, Shabnam Khan, Anujit Ghosal, Mudsser Azam, Eram Sharmin, Qazi Mohd Rizwanul Haq, Nahid Nishat
    更新日期:2019-07-21
  • 更新日期:2019-07-21
  • A probabilistic-based approach to support the comfort performance assessment of existing buildings
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-20
    Rafaela Bortolini, Núria Forcada

    Building performance is focused on maintaining and increasing sustainability while enhancing occupants’ comfort levels. Occupants’ comfort depends on uncertain, interrelated personal, social and building factors. However, the relationships between these factors are not covered by performance assessment tools based on linear analysis approaches. This study proposes a probabilistic model based on Bayesian networks (BNs) to assess the comfort performance of a building. An extensive review and evaluation of the causal factors of building performance, supported by the results of a satisfaction survey, are the basis for the BN model. Sensitivity analysis is used to verify the BN model, and the proposed approach is tested on an existing building. Findings from this research can guide decision-makers in the facility management industry to assess and understand causal factors of occupants’ comfort to properly establish sustainable and cleaner production strategies.

    更新日期:2019-07-21
  • Evaluating engineering properties and environmental impact of pervious concrete with fly ash and slag
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-20
    Xiaodan Chen, Hao Wang, Husam Najm, Giri Venkiteela, John Hencken

    This study evaluated engineering properties, cost, and energy and environmental impacts of three pervious concrete mixtures: pervious concrete with regular Portland cement (PC-Regular); with fly ash (PC-FA); and with blast furnace slag (PC–BFS). Laboratory tests were conducted to measure mechanical strength, hydraulic conductivity, and freezing-thaw resistance of mixtures. Life-cycle assessment (LCA) approach was used to quantify greenhouse gas (GHG) emission and energy consumption of pervious concrete mixtures with different material compositions. Mass and economic allocation methods were applied to quantify the effects of allocation on impact assessment of fly ash and slag. Laboratory test results show that as compared to the regular pervious concrete, pervious concrete mixtures with slag or fly ash had the similar freeze-thaw resistance but the lower mechanical strength, especially in tensile or flexural strength. The hydraulic conductivity of pervious concrete mixtures with fly ash and slag was found slightly higher due to the larger air void ratios. The choice of allocation methods was found to have significant effect on the assessment results. The adoption of economic allocation method showed 6–9% lower energy saving and 11–19% GHG emission reduction as compared to the mixture with Portland cement. The overall performance of each pervious concrete mixtures was quantified through internal normalization and the area covered in the radar diagram. The pervious concrete with fly ash exhibited the highest overall performance considering the balance of multiple-criteria in engineering properties, cost saving, energy and GHG reduction.

    更新日期:2019-07-21
  • Big data: New tend to sustainable consumption research
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-19
    Zhaohua Wang, Mengtian Xue, Yutao Wang, Malin Song, Shanjun Li, Ricardo A. Daziano, Bo Wang, Guanhua Ma, Ke Chen, Xiangtao Li, Bin Zhang

    Growing consumption has brought a series of environmental problems. Sustainable consumption patterns which could meet human needs, improve the quality of lives, and reduce pollutants in the product life cycle emerge and develop. With the development and application of information and network technology, the scale and variety of data are increasing rapidly; advances in data analytics have made the economy, and consumption, quantifiable and visible. At present, many scholars rely on a big-data background and carry out research on sustainable consumption. Therefore, we called for sustainable and consumption papers for special volume of Journal of Cleaner Production (JCLPRO). We received submissions from all over the world and eventually accepted 45. This Special Issue forming a study on sustainable energy consumption, low-carbon transportation, waste recovery and recycling, climate change cost assessment, application and policy modelling for big data and sustainable consumption to promote sustainable development in the fields of energy consumption, low-carbon transportation, waste recovery, and so on. The authors have analysed the problems of pollution and carbon emission in different regions and product production cycles, according to the background of specific regions and enterprises, through data mining, measurement models, and an evaluation index system. Some suggestions are provided for urban construction and enterprise development according to the results.

    更新日期:2019-07-19
  • 更新日期:2019-07-19
  • Effective role of eco-friendly acetyl tributyl citrate in large-scale catalyst-free synthesis of waterborne polyurethanes without volatile organic compounds
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-19
    Xin-Gui Li, Yun-Bin Xie, Mei-Rong Huang, Tomokazu Umeyama, Tomoya Ohara, Hiroshi Imahori
    更新日期:2019-07-19
  • Life cycle assessment of Diuron from cradle to grave : Case Study in Agave farm
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-19
    Chanakan Thirametoakkhara, Nuttapol Lerkkasemsan

    Diuron is a herbicide commonly used in agriculture to control and kill pre-emergent weeds. Extensive use of the chemical nonetheless harms the environment and human health. This research thus investigates the cradle-to-grave environmental impacts and risks to human health and ecosystem of diuron production, consumption, and disposal using life cycle assessment. The research focused on five production schemes (schemes A - E) of varying origins of raw materials and countries. Simapro 8.5 was used to simulate the environmental impacts (midpoint impacts) and risks to human health and ecosystem (endpoint impacts). The results revealed a positive correlation between overall environmental impact and transportation distance, rendering scheme C the most environmentally-friendly option due to the shortest transportation distance. Likewise, the endpoint-impact results indicated scheme C as the most favorable scheme, given the lowest overall human health risk and ecosystem damage.

    更新日期:2019-07-19
  • A convex optimization based decentralized real-time energy management model with the optimal integration of microgrid in smart grid
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-18
    Sahar Rahim, Nadeem Javaid, Rahim Dad Khan, Nadia Nawaz, Muhammad Iqbal

    A robust, decentralized, and real-time power management system is proposed by taking into account the economic dispatch constraints, overhead transmission lines reduction, and self-healing failure's mechanisms. Designed state of the art model is applicable to all the sectors of electricity consumers (residential, commercial, and industrial), utility companies and the power grid. Paramount importance is given to microgrids (MGs), while both of its modes (isolated and grid connected) are analyzed to examine the features of economic dispatch and system's net revenue in our prototypic. To deal with uncertainty in the demand curves, an innovative approach is adopted for the classification of electric load, according to their physical characteristics and user preferences. Furthermore, electricity generation is predominantly dependent on renewable energy sources (RESs), facilitated with the energy storage systems (ESSs); optimal scheduling methodology for power is introduced to tackle its intrinsically stochastic nature. Our problem minimizes the power system's aggregated cost with respect to power generation, consumption, and worst case transaction costs. Subgradient method is applied to solve our optimization problem, while lagrangian dual decomposition is used to transform the problem into subproblem for the accomplishment of all the objectives in distributed manners. For the corroboration of our strategy, results are reported after extensive numerical analysis.

    更新日期:2019-07-18
  • Chemical preparation of activated carbon from Acacia erioloba seed pods using H2SO4 as impregnating agent for water treatment: An environmentally benevolent approach
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-18
    Ateeq Rahman, Heita James Hango, Likius Daniel, Uahengo Veikko, Sirunda Johannes Jaime, Sandeep V.H.S. Bhaskaruni, Sreekantha Babu Jonnalagadda
    更新日期:2019-07-18
  • Formation and regulatory mechanisms of N-containing gaseous pollutants during stage-pyrolysis of agricultural biowastes
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-18
    Hao Zhan, Xiuzheng Zhuang, Yanpei Song, Guozhang Chang, Zhikang Wang, Xiuli Yin, Xinming Wang, Chuangzhi Wu

    Process control of fuel-bound nitrogen conversion into N-containing gaseous pollutants was essential for thermal utilization of agricultural biowastes. In this study, decisive formation pathways and regulatory mechanisms of two N-containing gaseous pollutants (NH3 and HCN) were probed via stage pyrolysis of three typical ones involving bean straw, rice straw and wheat straw. Formation characteristics of N-containing gaseous pollutants for single-stage and two-stage pyrolysis were quantitatively compared. Results indicated that consistent formation pathways of N-containing gaseous pollutants were elucidated by direct and indirect conversion of similar types of fuel-bound nitrogen - amide-N/amine-N/amino-N in agricultural biowastes. Specifically, two N-containing gaseous pollutants were hardly associated with primary pyrolysis of amide-N/amine-N/amino-N types (direct conversion) while dominantly determined by secondary reactions of subsequent nitrogen intermediates in chars and tars (indirect conversion); secondary reactions referring to hydrogenation of heterocyclic-N in chars and dehydrogenation of amine-N in tars were more responsible for NH3–N and HCN–N, respectively, leading to a maximal total yield of 45–50 wt%. Consequently, compared to single-stage pyrolysis under same conditions, two-stage pyrolysis could manipulate intensities of formation pathways at different pyrolysis stages through employing differential intermediate feedstocks for re-pyrolysis, minimizing the ratio of total yield by 57–60% with a greater effect on HCN–N yield (76–83%) than NH3–N yield (45–50%), which exhibited an excellent regulatory capacity on the formation of N-containing gaseous pollutants for agricultural biowastes. These findings were favorable for developing some insights into emission control of N-containing gaseous pollutants (intermediate and final) during their thermal utilization.

    更新日期:2019-07-18
  • Properties of self-compacting concrete (SCC) with recycled tire rubber aggregate: A comprehensive study
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-18
    Ning Li, Guangcheng Long, Cong Ma, Qiang Fu, Xiaohui Zeng, Kunlin Ma, Youjun Xie, Bote Luo

    Disposal of massive scrap tires in an eco-friendly way has become a worldwide concern due to the booming automobile industry. The introduction of waste tire rubber particles into concrete as an alternative aggregate provides a promising way to solve the problem. It is noteworthy that the substitute of natural aggregates with rubber particles can mitigate environmental destruction and resource consumption caused by mining activities of natural aggregates. In this study, a series of experiments were conducted to evaluate both fresh and hardened properties of self-compacting concrete (SCC) with recycled tire rubber aggregate (RA), aiming at providing fundamental insight of its performance for the potential large-scale applications. Results show that the addition of RA leads to a slight decline in workability and an increase in air content of fresh SCC. Increasing RA content results in the improvement of the damping ratio, fracture energy and ductility index while a loss of compressive strength and dynamic modulus. SCC with RA also presents high strain rate sensitivity and toughness index under impact load, indicating improved impact resistance. In addition, use of RA enables SCC to achieve low water absorption and high resistance to chloride ion penetration. From the above, this study provides a comprehensive investigation of the clean and effective utilization of recycled tire rubber in concrete.

    更新日期:2019-07-18
  • Co-digestion of blackwater with kitchen organic waste: Effects of mixing ratios and insights into microbial community
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-18
    L. Zhang, B. Guo, Q. Zhang, A. Florentino, R. Xu, Y. Zhang, Y. Liu
    更新日期:2019-07-18
  • Eco-efficiency of grain production in China based on water footprints: A stochastic frontier approach
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-18
    Jianfeng Song, Xiaonan Chen

    Eco-efficiency has consistently been of interest to researchers and policy makers. Many methods have been employed to calculate eco-efficiency, with the exception of the stochastic frontier approach, which is popular in efficiency and productivity analysis. Considering the strengths of the stochastic frontier approach and the features of grain production, an integrated WF-SFA method combining water footprint assessment and the stochastic frontier approach is proposed in this work. In the method, the green, blue and grey water footprints of grain production are calculated. Then, a translog stochastic frontier production function with actual grain output value as the only output and capital, labour and water footprints as the inputs is established. Next, eco-efficiency, which is defined as the ratio of the actual output to the potential output, can be assessed. This method is developed here to analyse the eco-efficiency of grain production and its determinants in China. The main empirical results are as follows. 1) The annual average grain production water footprint in China from 1997 to 2015 was 820.37 billion m3. 2) The eco-efficiencies were estimated to be within the range of 0.424–0.986, with an average value of 0.807. There is potential for China to increase the environmental and ecological sustainability with its grain production system. 3) The per capita GDP, per capita water supply, proportion of government expenditure on environmental protection and proportion of non-disaster areas positively influenced the grain production eco-efficiency. In addition, the calculated output elasticities of the blue and grey water footprints of recent years were negative. These findings can help China design relevant policies of agricultural sustainability focused on crop distribution, efficient irrigation water use and nutrient and pollutant management. This research provides a basic framework for the eco-efficiency evaluation of grain production with the stochastic frontier approach which can inform policy and strategic development.

    更新日期:2019-07-18
  • Pollution indicandum and Marble Waste Polluted Ecosystem; Role of selected indicator plants in phytoremediation and determination of pollution zones
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-18
    Zeeshan Ahmad, Shujaul Mulk Khan, Muhammad Ishtiaq Ali, Noureen Fatima, Shahab Ali

    The absence or presence of particular plant species indicates specific level of pollutions. It was hypothesized that the marble waste polluted ecosystem also host specific plant indicators that can grow, survive and tolerate more successfully than others and can be utilized in better managements of such systems. The current research work was therefore, conducted to determine the indicators of marble polluted region of Buner, Pakistan. Ecological techniques using varying sized quadrats i.e., 1 x 1 m2, 5 x 2 m2 and 10 x 2 m2 for herbs, shrubs and tree species were used respectively. Standard protocols were used to prepare soil samples and plant parts (root, leaf and shoot) for Atomic Absorption Spectrophotometry. Indicator i.e., Populus alba L., Arundo donax L., Erigeron canadensis L and Morus alba L. were identified via ISA in various polluted zones. All the collected data were put in MS Excel for analyses in PCORD through Cluster Analysis (CA), Two Way Cluster Analysis (TWCA) and Indicator Species Analysis (ISA). CANOCO software was used to examine the impact of miscellaneous environmental variables in zonation via both direct and indirect gradient techniques i.e., Detrended Correspondence Analysis (DCA) and Canonical Correspondence Analysis (CCA). A total of 102 plant species belonging to 95 genera and 48 families were recorded in the marble waste polluted ecosystem. CA and TWCA through Jaccard Distance measurements and Wards Linkage methods gave rise to 3 major polluted zones. These zones were i) Heavily Polluted Zone (HPZ), ii) Moderate Polluted Zone (MPZ) and iii) Less Polluted Zone (LPZ). The recorded values of Biological Concentration Factor (BCF), Translocation Factor (TF) and Bioaccumulation Coefficient (BAC) for analyzed heavy metals i.e. Fe, Mg, Ca, Na and Cu in root and shoot of P. alba L., A. donax L., and M. alba L. showed that these species were significant phytostabilizers and E. canadensis L. was phytoextracters and hence best indicandum of marble waste polluted ecosystems. It was concluded that among all the measured environmental variables, higher phosphorus level, higher pH, moderate potassium and lower Electrical Conductivity (EC) had significant effects (p<0.05) on the functions of these indicators as phytoremediaters. It is recommended to develop green belts of these indicators around the Marble industrial areas for the management better and hazardous free environment.

    更新日期:2019-07-18
  • Multi-stakeholders’ preference for best management practices based on environmental awareness
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-18
    Yi Du, Xiaoyan Wang, Lulu Zhang, Karl-Heinz Feger, Jennie Popp, Andrew Sharpley

    Stakeholder participation is crucial in solving environmental problems, especially in rural areas. This research investigates multi-stakeholders environmental awareness and preferences for best management practices (BMPs) in water conservation zones of north China for tackling non-point source pollution issue. A sample of 287 stakeholders involving 62 environmental officials, 18 volunteers, 73 left-behind villagers, and 130 migrant workers were interviewed. New Ecological Paradigm (NEP) Scale and Principal component analysis were used to evaluate stakeholder's environmental awareness, preference for BMPs and factors influencing awareness and preference. Results show that engineering BMPs generally have a higher acceptance than management BMPs which can guide proper farming practices to reduce the likelihood of contamination from the source. Among the management measures, the preference for nutrient management was higher than that of tillage management. Considerable preference heterogeneity exists among different stakeholder groups in terms of BMPs in the case study area. Overall, environmental officials and volunteers are more supportive for implementing BMPs than left-behind farmers and migrant workers. In terms of implementation, environmental officials and volunteers tend to pay more attention to both the environmental benefit and economic benefit, while left-behind farmers and migrant workers focus more on economic benefit. To gain more economic benefit, people in areas with low economic levels are more willing to accept these measures to improve the status quo of living environment and income. Principal component analysis shows that demographics (23.6%), environmental awareness (15%), policies (13.6%) and economic (12.8%) can influence stakeholders' preference for BMPs. The cumulative contribution of the four factors accounts for 65%. The results suggest that decision makers need to coordinate multi-interest among the stakeholders and emphasize stakeholder consultation to meet local stakeholders' needs. We provide implications to policy-makers for revising existing or introducing adequate incentives to motivate local stakeholders and increase their support for implementing BMPs, instead of using enforcement.

    更新日期:2019-07-18
  • Novel CS2 storage materials from ion-like liquids for one-step synthesis of active nano-metal sulfides in the photocatalytic reduction of CO2
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-18
    Xiaoqing Yue, Qiang Li, Bin Li, Long Zhao, Yu Wu, Tingyu Yang, Kai Liu, Jianbin Zhang, Ning Zhu
    更新日期:2019-07-18
  • Towards Circular Business Models: A systematic literature review on classification frameworks and archetypes
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-18
    Paolo Rosa, Claudio Sassanelli, Sergio Terzi

    Since many years, companies are trying to cope with impressive technological growth rates, severe environmental issues and even more restrictive national and international directives. However, innovative Business Models (BMs) and industrial strategies adequate to this new context are still either under development or implementation. To this aim, the article proposes a systematic literature review on existing Circular Business Models (CBMs) and their classification methods, by selecting the most promising ones. A total amount of 283 articles related with CBMs has been assessed into detail, by identifying: 5 archetypes, 9 classification methods, 5 adoption-oriented challenges, 4 decision-support tools and 3 additional research areas. Key findings demonstrate that: i) Product-Service Systems (PSSs)-oriented and Reuse, Remanufacturing and Recycling (3R)-based CBMs are the most common archetypes, ii) Business Model Canvas is the most diffused classification framework, iii) sustainability and company-based challenges are the most discussed by the experts and iv) sustainability check-oriented is the most common type of decision-support tools. These (and others) results could support both companies, researchers and governments in updating the current knowledge on CBMs and make them adoptable for practitioners from different industrial contexts.

    更新日期:2019-07-18
  • Spatial-temporal dynamics of social value: Lessons learnt from two UK nuclear decommissioning case studies
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-17
    Cara Mulholland, Obuks Ejohwomu, Paul W. Chan

    Recently, the concept of social value in construction has seen increasing policy, practice and research interest. In part, this interest stems from growing recognition that construction projects, and especially megaprojects, can create huge social impacts. Although many studies have focussed on defining and developing measures for quantifying social value, qualitative meanings and interpretations of these measures are relatively under-examined. In this paper, two instrumental case studies of infrastructure megaprojects in nuclear decommissioning are analysed to investigate the process of meaning-making of social value. Lessons are drawn from taking a more qualitative, dynamic and processual approach. The findings highlight the limitations of reductionism in existing quantitative measures and emphasise the importance of time and place in understanding the ever-changing idea (and ideals) of delivering social value. Social value is thus a condition of, and conditioned by, ongoing negotiations throughout the lifecycle. Adding to social value research that is dominated by quantitative studies, the nuances highlighted in the case studies show the need to move beyond static measures at a point in time to consider the ongoing and never-ceasing process of transforming social value in construction.

    更新日期:2019-07-18
  • Pioneering environmental innovation in developing countries: The case of executives' adoption of Leadership in Energy and Environmental Design
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-17
    Enrico Fontana

    By integrating and diffusing environmental innovations (EIs), executives act as important change agents who promote the corporate sustainability (CS) agenda. This article borrows a sensemaking lens to examine the influences behind executives’ adoption of Leadership in Energy and Environmental Design (LEED), a prominent EI for building sustainability. Through qualitative fieldwork with 30 local executives deliberately adopting LEED and operating in the Bangladeshi apparel industry, this article reveals that the executives are driven by collective influences, that is, homogeneous assumptions co-created in their social circle. It also demonstrates that the executives translate these assumptions in line with individual influences, ultimately displaying four distinct sensemaking patterns and investing differently. While highlighting the importance of analysing EIs in specific industries in developing countries from the perspective of the chief change agents in the firm, this article contributes to the on-going conversations on EI adoption in the CS literature.

    更新日期:2019-07-18
  • Manganese and ammonia nitrogen recovery from electrolytic manganese residue by electric field enhanced leaching
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-17
    Tian Yang, Shu Jiancheng, Mengjun Chen, Jianyi Wang, Yao Wang, Zhenggang Luo, Rui Wang, Feihua Yang, Furong Xiu, Zhi Sun
    更新日期:2019-07-18
  • Evaluation of mitigation potential of GHG emissions from the construction of prefabricated subway station
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-17
    Minghui Liu, Siyi Jia, Xuan Liu

    In an attempt to mitigate greenhouse gas (GHG) emissions from the transport sector, urban rail transit (URT) has been given high priority by the Chinese government. However, the GHG emissions associated with the operation and construction of URT systems are of public and scientific concern. Although some efforts have been made to reduce GHG emissbions owing to URT, the mitigation potential of construction-related GHG emissions is yet to be exploited. To achieve this potential, innovations and optimization in construction methods and management are required. In this study, the mitigation potential of GHG emissions from prefabricated structures in subway stations is investigated. The results show that the construction of a unit length prefabricated section generates 12.59% less GHG emissions than those of the cast-in-site section. In particular, embodied emissions from building materials drop by 14.38% in prefabricated structures, which is achieved by structural optimization and a lower attrition rate. Moreover, off-site prefabrication enables the adoption of cleaner fuel. In the case station, GHG emissions from natural gases account for 83.86% of the total fuel-based emissions at a prefabrication site; therefore, the fuel-based emissions of prefabrication have been significantly mitigated. Another mitigation source comes from the contribution of reduced labor; it is estimated that an extra 0.780t CO2.eq. is saved for the construction of a 1-m prefabricated section through the saved living facilities of on-site workers. In addition, the adaptability of prefabricated structures is checked under different service levels, and results indicate that the proposed widening scheme loses its mitigation efficiency when the width increment exceeds 2 m.

    更新日期:2019-07-18
  • Lean-green integration and its impact on sustainability performance: A critical review
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-17
    Ananya Bhattacharya, Alka Nand, Pavel Castka

    Lean and green management concepts provide approaches to managing organisations and their supply chains with the aim of improving organisational performance. In particular, the integration of lean and green concepts holds promise for addressing the sustainability performance or triple bottom line (TBL; economic, environmental and social dimensions) of an organisational production system. This paper provides a systematic literature review on the topic of lean and green integration and its impact on sustainability performance and critically reviews findings from 80 articles from 2006 to 2018 in leading operations and supply chain management peer-reviewed journals. The overall argument in the papers is that lean and green share common features and that the integration of lean and green strengthens the performance outcomes of organisational production system. However, the overall effect is moderated by various contingencies. The impact on sustainability performance is mixed, but it is also evident that most studies conclude that integrative adoption of lean-green positively impacts sustainability performance, especially in comparison to individual adoption of lean or green concepts in isolation. The study also proposes future research directions based on gaps in existing studies.

    更新日期:2019-07-18
  • Circular utilization of Co(II) adsorbed composites for efficient organic pollutants degradation by transforming into Co/N-doped carbonaceous catalyst
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-17
    Shufeng Bo, Junmei Luo, Qingda An, Xin Zhao, Zuoyi Xiao, Shangru Zhai, Zhongcheng Li
    更新日期:2019-07-17
  • Clean and efficient production of biodiesel using barium cerate as a heterogeneous catalyst for the biodiesel production; kinetics and thermodynamic study
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-17
    Shalini Sahani, Tania Roy, Yogesh Chandra Sharma

    Barium cerate, a novel solid base catalyst was employed in transesterification reaction for biodiesel production. The catalyst was characterized by Thermogravimetric analyses, powder X-ray Diffraction, Scanning Electron Microscopy attached with energy dispersive unit, Fourier Transform Infrared Spectroscopy. Karanja oil was used as non-edible feedstock for biodiesel production. The fatty acid profile of feedstock was analyzed by Gas Chromatography-Mass Spectrometry. In the present study, calcination temperature was optimized for synthesis of perovskite barium cerate with highest phase purity. Additionally, various Ba/Ce stoichiometric ratios were also checked to evaluate the active metal phase of catalyst. Ultimately, perovskite structure with 1:1 Ba/Ce was found to be most efficient one to catalyze the transesterification. This owed to the higher basicity value as well as compact and well-arranged perovskite crystal system which facilitate the catalysis on its surface. It produced the karanja oil methyl ester with 98.3% conversion at following experimental conditions: catalyst dose (1.2 wt %), oil to methanol molar ratio (1:19), reaction temperature (65 °C), reaction time (100min), and agitation speed (600 rpm). The pseudo-first order kinetic model was also successfully established for transesterification reaction. Green chemistry metrics (E-factor) and turn over frequency were also evaluated for methanolysis reaction. Barium cerate exhibited sixth cycle reusability with 81% methyl ester conversion. Therefore the prepared catalyst was ascertained as a sustainable heterogeneous catalyst for transesterification reaction. The physicochemical properties of the synthesized karanja oil methyl ester were measured according to ASTM D 6751 and were found to be within the permissible range. It ensured the compatibility of produced biodiesel with existing CI engines without any further modification.

    更新日期:2019-07-17
  • Concurrent economic and environmental impacts of food consumption: are low emissions diets affordable?
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-17
    Luca Benvenuti, Alberto De Santis, Andrea Di Sero, Nicola Franco

    Sustainability of food consumption concerns both environmental and economic issues. In fact, the United Nations Food and Agricultural Organization defines as sustainable diets those that are protective and respectful of ecosystems, culturally acceptable, economically affordable, besides ensuring an adequate and healthy nutrition. In this paper, a systematic methodology to plan menus complying with nutritional and health issues, close to current eating habits, affordable and with low greenhouse gas emissions is presented. The methodology relies on a multi–objective optimization model with binary variables. The objectives, that is the greenhouse gas emissions needed to serve the menu and its price, are conflicting and therefore a trade–off has to be established by means of the set of Pareto solutions. Any such a solution delivers a menu in term of the recipes composing each daily meal. The application of the presented methodology to the case of cycle menus for nursing homes is investigated. The case study shows that the menu's environmental impact is generally in inverse proportion to its price. Nevertheless, it is possible to obtain a menu with a significantly reduced environmental impact at an affordable extra cost.

    更新日期:2019-07-17
  • A straightforward bioprocess for a cleaner paper decolorization
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-17
    Cristina Valls, Oriol Cusola, Teresa Vidal, A.L. Torres, M. Blanca Roncero
    更新日期:2019-07-17
  • A hybrid model of LCA and emergy for co-benefits assessment associated with waste and by-product reutilization
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-17
    Zhe Liu, Weili Liu, Michelle Adams, Raymond P. Cote, Yong Geng, Shuilong Chen

    Life cycle analysis (LCA) and emergy analysis are both considered important methodologies in environmental management. Both methodologies have been applied separately in a variety of situations. Various authors have noted that each method has its limitation but the integration of the two methodologies could have a promising future. In this study, the authors will illustrate a hybrid model by integrating LCA into emergy analysis framework to assess the co-benefits achieved through the application of an eco-industrial strategy in an industrial park. A case study namely Shenyang economic technological development area (SETDA) is undertaken to validate the model. The results show that boiler steam achieves the most co-benefits among the re-utilised resources brought about by the application of the eco-industrial strategy. GHG emissions reduction is only one of the environmental benefits found. From the perspective of unit mass of materials, steel and iron scrap generated the largest co-benefits. Management of the industrial park should investigate initiatives to transfer excess waste heat to potential users through piping systems as well as reutilising steel and iron scrap for productive purposes. The study shows that while each methodology has its own advantages, their weaknesses can be mitigated through a hybrid model.

    更新日期:2019-07-17
  • A new formulation of the electric vehicle routing problem with time windows considering concave nonlinear charging function
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-17
    Xiaorong Zuo, Yiyong Xiao, Meng You, Ikou Kaku, Yuchun Xu

    The electric vehicle routing problem with time window (EVRPTW) is an extension of the traditional vehicle routing problem with time window (VRPTW), where new features of electric vehicles are considered, such as limited battery capacities, lack of infrastructures, and long charging time. In this study, new technical formulations were presented for vehicle route selection and charging station visit, which reduces the formulation complexity without using duplicated dummy nodes or arcs. Besides, a new linearization method was developed that employs a set of secant lines to surrogate the concave nonlinear charging function with linear constraints. This method defines the charging time as a continuous variable and uses fewer variables than existing formulation in literature. A mixed-integer linear programming (MILP) model was developed for the EVRPTW and computational experiments on Solomon's VRPTW instances were conducted to verify the proposed model. The experimental results were compared with those obtained by traditional routing models, which showed that the proposed model can result in better EVs logistics schedules with higher charging time utilizations.

    更新日期:2019-07-17
  • Transforming chemical supply chains toward sustainability—A practice-based view
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-17
    Julia Brömer, Marcus Brandenburg, Stefan Gold

    In today’s business, it is largely acknowledged that sustainability has to be considered in managerial decision making and corporate strategy development. However, many firms still face substantial operational and organizational challenges when striving for a transformation toward sustainability, especially when expanding their efforts toward their supplier base. Framed by the recently emerging theoretical lens of the practice-based view and its extension toward the supply chain practice view, and grounded in recent conceptualizations of sustainable supply chain management, the study at hand elaborates on management practices by which firms can improve the sustainability of their supply chains. Due to its high economic relevance and its exposure to increasing sustainability requirements, the chemical process industry is chosen as the empirical research field. Qualitative case study research identifies intra- and inter-organizational practices that are important to achieve and improve supply chain sustainability. A framework that conceptualizes sustainability practices and their implementation prerequisites and performance impacts is derived from interviews with key informants from German chemical manufacturers. This paper contributes to the state-of-the-art of sustainability diffusion in particular through its distinct focus on imitable practices that are easily transferable between companies and hence may help in transforming entire industry sectors toward sustainability.

    更新日期:2019-07-17
  • Monitoring the transition towards a bioeconomy: A general framework and a specific indicator
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-17
    Wiebke Jander, Philipp Grundmann

    Monitoring schemes and indicators are currently under development to enable the assessment of the economic, social, political, and environmental impacts of bioeconomic transitions and better inform bioeconomic policy-making. Such transitions generally mean reduction in fossil resource use through innovative, clean technologies that can enable substitution of biogenic resources for fossil resources. The concept of bioeconomy transition is not yet well embedded in current monitoring schemes. Proper framing and a quantitative indicator for measuring the advancement and status of bioeconomy transitions has been missing up to now. This research aims to lay some groundwork for monitoring transitions from fossil-based to bio-based economies by adapting an existing bioeconomic framework and applying a newly developed indicator: the Substitution Share Indicator (SSI). This indicator relates bio-based substitute products to their fossil-based counterparts and accounts for indirect fossil resource flows, which are estimated using a bottom-up approach, based on life-cycle inventory data, and a top-down approach, based on input–output data. The innovative indicator is tested and validated for the first time in the case of transport fuels and plastics sector in Germany. The SSI in the German transport fuels sector is currently relatively low, at 3.1% (bottom-up approach) to 3.4% (top-down approach). It is even lower in the plastics sector, at 0.09% (bottom-up approach) to 0.6% (top-down approach). Major policy efforts need to be undertaken in Germany, focused not only on the growing bioeconomy but on substitution effects as well. Future policies should provide incentives for increasing production of innovative bio-based substitute goods, improving the fossil resource use efficiency of existing fossil- and bio-based products, and lowering consumption of fossil-based products. Such efforts should be reflected in the SSI and signal bioeconomy transition. Before the widespread use of the indicator for policy formulation and analysis, further advancement is recommended. A hybrid approach integrating process data into input–output data would be expedient for improving the SSI in terms of credibility, measurability and robustness. Linkage to relevant indicators for sustainability assessment of transitions is equally important for effectively monitoring sustainable bioeconomy transitions.

    更新日期:2019-07-17
  • Estimating greenhouse gas emissions from Iran's domestic wastewater sector and modeling the emission scenarios by 2030
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-17
    Hossein Nayeb, Maryam Mirabi, Homayoon Motiee, Abolghasem Alighardashi, Ahmad Khoshgard

    Domestic and industrial wastewaters are categorized as anthropogenic greenhouse gas emission sources. Wastewater collection systems, wastewater treatment plants and discharging wastewater to the environment lead to direct greenhouse gas (carbon dioxide, nitrous oxide, and methane) emission from biological processes and indirect emissions due to energy consumption. In this study, the current status of greenhouse gas emissions from the domestic wastewater sector in Iran and emission scenarios up to the horizon of 2030 were estimated. According to the developed estimations based on the calculation method presented by Intergovernmental Panel on Climate Change (IPCC) for greenhouse gas emissions, methane (144.94 kt/yr) and nitrous oxide (1.47 kt/yr) are emitted directly in the domestic wastewater sector. Thus, wastewater treatment plants are releasing methane (8.542 kt/yr) and nitrous oxide (0.0273 kt/yr) directly along with carbon dioxide (901.77 kt/yr) indirectly. In the next phase of this study, different scenarios of greenhouse gas emissions from the domestic wastewater sector were developed. According to the calculations, the highest emission will occur in 2030, when the people access to wastewater treatment systems increases, while the performance of the wastewater treatment plants has not been improved (6,024.46 ktCO2e/yr). Also, the lowest emission will occur when people's access to wastewater treatment systems has increased and the performance of these wastewater treatment plants has been improved at the same time (2,739.31 ktCO2e/yr). According to the result of this study, the best outline will be achieved if the primary focus is on the improvement of wastewater treatment operation by 2025, and since then the focus shifts forward to increasing population coverage and upgrading performance.

    更新日期:2019-07-17
  • The combustion of polyolefins in inert and catalytic fluidised beds
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-17
    Witold Żukowski, Gabriela Berkowicz
    更新日期:2019-07-17
  • Perceptions of governments towards mitigating the environmental impacts of expressway construction projects: A case of China
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-17
    Liu Wu, Kunhui Ye, Pan Gong, Jinding Xing

    The enormous impacts of expressway construction projects (ECPs) on the natural environment worldwide have created the urgency of involving both governments and contractors in the construction process. Governments play a substantial role in motivating contractors to adopt effective technologies and management paradigms to mitigate the environmental impacts of ECPs. A proper perception of this public matter and relevant management approaches is a prerequisite for governments to fulfill such a role. Using China as a case, the purpose of this study is to examine the scope of the environmental impacts that governments perceive and the evolution of the perceptions into management approaches. Response of provincial governments to environmental impact assessment (EIA) for 132 ECPs was compiled as the materials of the study. Data were retrieved from the materials by using the text mining method. The data analysis reveals that: (1) governments follow the pressure-state-response framework to express their concerns over the environmental impacts; (2) the management approaches that governments consider are embedded in the impacts; (3) governments management approaches are intended to emphasize an ecological perspective. The research findings contribute as a cornerstone for researchers to examine the performance of governments on this public affair and shed some lights on same practices in other countries.

    更新日期:2019-07-17
  • Energy technological progress, energy consumption, and CO2 emissions: Empirical evidence from China
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-17
    Wei Gu, Xiaohui Zhao, Xiangbin Yan, Chen Wang, Qing Li

    Technical progress is usually considered to be an important way to effectively reduce carbon emissions. However, the advancement of energy technology may cause rebound effect which may lessen the emission reduction effect of technical progress. This suggests that the real impact of energy technological progress is worthy of further study. By taking the rebound effect into consideration, this study estimates the real effect of energy technological progress and energy consumption on carbon emissions in China, based on an interaction model, and using data from China's 30 provinces for the period 2005–2016. Key results include the following: (1) An inverted U-shaped relationship between energy technological progress and carbon emissions is detected. (2) Across technical progress, energy consumption has an inverted U-shaped effect on carbon emissions. (3) Turning points are found in both the direct effect and the technical effect of China's energy technological progress. This indicates that they initially increase carbon emissions, and then reduce them, although the rebound effect continues to have a positive impact on the increase of carbon emissions. (4) The largest differences between regions with different energy technology levels appear in the direct effect and the technical effect of energy technological progress on CO2 emissions, and there is almost no difference in rebound effect. Some relevant policy recommendations are proposed, based on the above findings.

    更新日期:2019-07-17
  • Water reuse nexus with resource recovery: On the fluidized-bed homogeneous crystallization of copper and phosphate from semiconductor wastewater
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-17
    Lester Lee E. Bayon, Florencio C. Ballesteros, Sergi Garcia-Segura, Ming-Chun Lu

    Green and sustainable strategies aim for the development of manufacturing processes that maximize the use of resources instigating semiconductor industry to adopt zero-liquid discharge policies. Complexity and variations of semiconductor wastewater effluents opens an opportunity for resource recovery (i.e. copper from chemical-mechanical polishing) including heavy metals and inorganic ions (i.e. phosphate from acid cleaning). This present work demonstrates the capabilities of fluidized-bed homogeneous crystallization as treatment technology to process water effluents for industrial reuse while simultaneously recovering precious resources such as copper and phosphate. Operational variables have been optimized considering the combination of both effluents to produce high quality copper phosphate granules. The optimum copper percentage removal and crystallization efficiency were 99% and 96.07% respectively obtained at pHe 6.0 - 6.5, 1.25 [PO4-3]in/[Cu2+]in at hydraulic retention time 22.5 mins with 0.51 kg Cu2+/m2.h and fixed [Cu2+]in loading of 4.5 mM. The recovered crystals have an average particle diameter of ∼1 mm were characterized identifying libethenite (Cu2PO4OH) as main recovered products.

    更新日期:2019-07-17
  • Optimal (re)manufacturing strategies in the presence of spontaneous consumer returns
    J. Clean. Prod. (IF 6.395) Pub Date : 2019-07-17
    Jing Chen, Uday Venkatadri, Claver Diallo

    Remanufacturing is a sustainable development strategy for recovering product value and extending original item lifetimes through collection, inspection, testing, and restoration activities. Remanufacturing activities are typically carried out on products that have been returned by consumers, and the increasingly high flow of products spontaneously returned by customers through marketing initiatives such as Money-Back Guarantee policies or false warranty claims, end of is a growing source of products that can be easily remanufactured. In this paper, we develop a novel pricing model for a firm that produces and sells Generation 1 new products in the first period with a promise of Money-Back Guarantee on returned products regardless of reasons. Products returned in the first period can be remanufactured and sold as remanufactured products during the second period, alongside Generation 2 new products. The firm needs to determine the optimal pricing for its two generations of new products and its remanufactured products, based on demand derived from its customers’ utility of purchasing either the new or the remanufactured products. We identify the firm’s optimal production strategy. Numerical experiments are conducted to illustrate the key managerial insights derived from the model. This paper makes two contributions to the literature: 1) it links customer returns and closed loop supply chain management. Most studies on customer returns do not link remanufacturing with product returns, while most studies on closed loop supply chains assume that the source for remanufactured products is unlimited. 2) It is shown that although remanufacturing returned products may cannibalize new sales, it enhances overall sales, as the firm can differentiate prices for Generation 2 new products and remanufactured products in the second period to attract customers with different valuations on the products.

    更新日期:2019-07-17
  • 更新日期:2019-07-17
Some contents have been Reproduced by permission of The Royal Society of Chemistry.
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