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Laccase immobilized on amino-functionalized magnetic Fe3O4-SiO2 core-shell material for 2,4-Dichlorophenol removal Environ. Technol. (IF 2.213) Pub Date : 2021-02-23 Dajun Ren; Shan Jiang; Linjun Fu; Zhaobo Wang; Shuqin Zhang; Xiaoqing Zhang; Xiangyi Gong; Wangsheng Chen
Abstract: In this study, an amino-functionalized magnetic silica microsphere material (Fe3O4-SiO2-NH2) was prepared. Using glutaraldehyde as a cross-linking agent, Trametes versicolor laccase was adsorbed-covalently bonded and immobilized on the material to prepare Laccase @ Fe3O4-SiO2. In addition, the materials were characterized and analyzed by SEM, TEM, XRD, FT-IR and VSM. Finally, the thermal
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Groundwater defluoridation efficacy of manganese-oxide-coated alumina prepared via two-step heating Environ. Technol. (IF 2.213) Pub Date : 2021-02-22 Ísis Cristina Garcia Saraiva; Sibele Ezaki; Giovanna Dias Calabria; Mirian Chieko Shinzato
Abstract Fluoride concentrations in groundwater can be high in some Brazilian aquifers and therefore these waters should be treated before consumption. This study assessed the properties of Mn-oxide-coated alumina (AM) prepared by two-step heating in water defluoridation. The release of secondary contaminants (e.g. Al3+ and Mn2+) from alumina was also examined, as their removal by vermiculite. The
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Foam aerated biofilm reactor (FABR): a novel counter-diffusional process for COD and nitrogen removal from low COD/N effluents Environ. Technol. (IF 2.213) Pub Date : 2021-02-22 Bruno Garcia Silva; Jean Maikon Santos Oliveira; Márcia Helena Rissato Zamariolli Damianovic; Eugenio Foresti
Abstract Counter-diffusional biofilms are efficient in the removal of nitrogen from low strength wastewaters. Although counter-diffusion is usually stablished using expensive gas-permeable membranes, a polyurethane sheet is used to separate the aerobic and anoxic environments in the novel foam aerated biofilm reactor (FABR). Foam sheets with thicknesses of 10, 5 and 2 mm and synthetic wastewater with
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Response surface methodology to optimize self-flocculation harvesting of microalgae Desmodesmus sp.CHX1 Environ. Technol. (IF 2.213) Pub Date : 2021-02-18 Bangxi Zhang; Linhai Liu; Xiaoai Lin; Zhicheng Xu; Wenhai Luo; Longzao Luo
Abstract This study aims to optimize the self-flocculation ability of microalgae Desmodesmus sp.CHX1 by the response surface methodology (RSM). Key parameters (i.e pH, temperature, and flocculation time) that significantly affected the Desmodesmus sp.CHX1 flocculation were determined. Results show that the flocculation efficiency of Desmodesmus sp.CHX1 increased in response to the prolonged settling
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Study on wet oxidation process and mechanism for ethylene spent caustic Environ. Technol. (IF 2.213) Pub Date : 2021-02-18 Yuan Wei; Jun Zhao; ZongJian Liu; Lin Zhang; Qun Cui; HaiYan Wang
Abstract Ethylene spent caustic with strong alkalinity, high chemical oxygen demand (COD) and toxicity could not be directly discharged without pretreatment. In this paper, the composition of spent caustic from a petrochemical enterprise was analyzed. Effects of oxidants, reaction temperature, pressure and residence time on the removal ratio of COD in the spent caustic were investigated. The oxidation
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Adsorption kinetics and Box-Behnken design optimization for organic dyes on tungsten oxide Environ. Technol. (IF 2.213) Pub Date : 2021-02-17 A. Arteaga-Jiménez; M. G. Trejo-Perez; A. L. García-García; E. González-Jasso; M. A. Vidales-Hurtado
Transition metal oxides have been applied to degrade organic dyes found in water bodies via photocatalysis. To do it, however, is essential that the dye molecules adsorb onto the metal oxide surface. Thus, optimizing the adsorption capacity of the adsorbent increases the probability of reaction between oxidation radicals and organic dye molecules and maximizes the effectiveness per gram of photocatalyst
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Effect of Fe(III)-bicarboxylic complexes in removal pollutant under UV and sunlight in aqueous solutions. Environ. Technol. (IF 2.213) Pub Date : 2021-02-15 N. Seraghni; I. Ghoul; B. A. Dekkiche; C. Bouaziz; N. Debbache; T. Sehili
Abstract In this study, we have applied Fe(III)-bi-carboxylic acid solutions containing citrate and oxalate ligands to degrade 3-méthylphénol (3MP) in aqueous solutions both under UV and sunlight. Under irradiation at 365 nm, the photodegradation of 3MP is markedly better in the presence of the Fe(III)Ox complex than in the Fe(III)Cit complex this fact is explained by an excess of H2O2 and Fe(II) generated
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Fenton pre-oxidation of natural organic matter in drinking water treatment through the application of iron nails Environ. Technol. (IF 2.213) Pub Date : 2021-02-12 Naiara de O. dos Santos; Luiz A. Teixeira; Qizhi Zhou; Grace Burke; Luiza C. Campos
Abstract This study investigated for the first time the efficiency of an advanced oxidation process (AOP) zero valent iron/hydrogen peroxide (ZVI/H2O2) employing iron nails for the removal of Natural Organic Matter (NOM) from natural water of Regent’s Park lake, London, UK. The low cost of nails and their easy separation from the water after the treatment make this AOP attractive for water utilities
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Biodegradation of di-n-octyl phthalate by Gordonia sp. Lff and its application in soil Environ. Technol. (IF 2.213) Pub Date : 2021-02-12 Yangyang Wang; Qiang Ren; Wenhao Zhan; Kaixuan Zheng; Qi Liao; Zhihui Yang; Yansong Wang; Xinling Ruan
Abstract A previous isolated Gordonia sp. (Lff) was used to degrade di-n-octyl phthalate (DOP) contamination both in aqueous solution and soil. The influence of temperature, pH, inoculum size, salt content and initial concentration of DOP on DOP degradation by Lff were analysed. The response of soil bacterial community to DOP and Lff was also analysed by Illumina MiSeq sequence method. Results showed
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Suppression of phosphorus release from eutrophic lake sediments by sediment microbial fuel cells Environ. Technol. (IF 2.213) Pub Date : 2021-02-12 Yasuyuki Takemura; Kazuaki Syutsubo; Keiichi Kubota
ABSTRACT. Sediment microbial fuel cells (SMFCs) have served as an alternative technique to suppress phosphorus release from lake sediments to water bodies and thus mitigate eutrophication. However, the phosphorus regulation mechanism remains unclear. The purpose of this research was to understand the electrochemical influence of an SMFC on the phosphorus concentration in interstitial water. In this
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Solar-driven zinc-doped graphitic carbon nitride photocatalytic fiber for simultaneous removal of hexavalent chromium and pharmaceuticals Environ. Technol. (IF 2.213) Pub Date : 2021-02-12 Zhexin Zhu; Yongquan Miao; Gangqiang Wang; Wenxing Chen; Wangyang Lu
Abstract The current environmental problems urgently require researchers to seek an environmentally friendly, effective and easy to operate sewage treatment method. Graphite carbon nitride (g-C3N4), which has the advantages of simple preparation, safety, non-toxicity and chemical resistance, was expected to become a photocatalyst for solving environmental pollution. However, the performances of g-C3N4
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Photocatalytic disinfection of Coliforms and degradation of natural organic matters in river water using titanate nanotubes Environ. Technol. (IF 2.213) Pub Date : 2021-02-10 Nhat Huy Nguyen; Tran Tien Khoi; Thang Nguyen Hung; Que Vo Nguyen Xuan; Thuong Ho Thi; Phuong Le Thi; Thuy Nguyen Thi
Abstract In this study, we synthesized and modified titanate nanotubes (TNTs) under different conditions of acid rinsing and calcination. The produced materials were then characterized by transmission electron microscopy, X-ray diffraction, ultraviolet-visible spectroscopy, temperature programmed desorption, inductively coupled plasma atomic emission spectroscopy, and Brunauer-Emmett-Teller analysis
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Efficiency of High Rate Treatment of Low-strength Municipality Sewage by a Pilot-scale Combination System of a Sedimentation Tank and a Down-flow Hanging Sponge Reactor Environ. Technol. (IF 2.213) Pub Date : 2021-02-10 Yoshihiro Kirishima; Pairaya Choeisai; Watcharapol Khotwieng; Masashi Hatamoto; Takahiro Watari; Krit Choeisai; Piyanuch Panchaban; Thotsaphon Wong-asa; Takashi Yamaguchi
Abstract Down-flow hanging sponge (DHS) reactor that is sponge-based trickling filter was considered to be an alternative aerobic treatment system for low strength sewage treatment under tropical conditions. This study aims to determine the process performance of the DHS reactor combined with a pre-treatment sedimentation tank (SED) system installed at the municipality sewage treatment plant in Khon
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Optimization of airflow and aeration cycles in a new structured bed reactor configuration for carbon and nitrogen removal Environ. Technol. (IF 2.213) Pub Date : 2021-02-05 Eduardo Paniguel Oliveira; Theo Syrto Octavio de Souza; Dagoberto Y. Okada; Leonardo H. S. Damasceno; Rogério Esteves Salustiano; Rafael Brito de Moura
Abstract The Structured Bed Reactor with Recirculation and Intermittent Aeration (SBRRIA) is a reactor configuration that presents high efficiency of organic matter and nitrogen removal, besides low sludge production. However, operational parameters, as the recirculation rate, aeration time, and airflow, are not fully established. A bench-scale structured bed reactor with intermittent aeration was
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Improvement of biotreatability of environmentally persistent antibiotic Tiamulin by O3 and O3/H2O2 oxidation processes Environ. Technol. (IF 2.213) Pub Date : 2021-02-03 Andreja Žgajnar Gotvajn; Ján Derco; Martin Vrabeľ; Angelika Kassai
ABSTRACT The aim of the work was to assess the efficiency of ozonation and ozonation in combination with H2O2 in jet loop reactor to increase biotreatability of persistent veterinary antibiotic Tiamulin. The efficiency of oxidative processes was monitored by combined approach based on determination of efficiency of wastewater treatment and impact to waste sludge stabilization. Degradation of Tiamulin
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Improvement of biotreatability of environmentally persistent antibiotic Tiamulin by O3 and O3/H2O2 oxidation processes Environ. Technol. (IF 2.213) Pub Date : 2021-02-03 Andreja Žgajnar Gotvajn; Ján Derco; Martin Vrabeľ; Angelika Kassai
ABSTRACT The aim of the work was to assess the efficiency of ozonation and ozonation in combination with H2O2 in jet loop reactor to increase biotreatability of persistent veterinary antibiotic Tiamulin. The efficiency of oxidative processes was monitored by combined approach based on determination of efficiency of wastewater treatment and impact to waste sludge stabilization. Degradation of Tiamulin
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Research on the influencing factors and mechanism of single-phase microemulsion cleaning of shale gas oil-based cuttings Environ. Technol. (IF 2.213) Pub Date : 2021-02-01 Guobin Jiang; Jing Li; Jinlei Yu; Huashan Jiang; Hui Li; Bo Xu; Liang Zhao; Hongjuan Wang
Abstract: Oil-based cuttings (OBCs) produced by shale gas exploitation are classified as hazardous waste. Their appropriate utilization and disposal is a key issue that urgently needs to be resolved. A single-phase microemulsion (SPM) has ultra-low interfacial tension and strong solubilization ability. In view of this, based on an analysis of the characteristics of OBCs, SPMs have been selected for
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Diversity of microbial community structure and their association with phthalic acid esters and physicochemical parameters in informal landfills Environ. Technol. (IF 2.213) Pub Date : 2021-02-01 Qin Yin; Haihong Yan; Xiaoya Guo; Yu Liang; Xingzhi Wang; Yuegang Nian; Haiyan Wang
Abstract Informal landfill is a common waste treatment method employed in rural areas of China, and phthalic acid esters (PAEs) are one of the typical pollutants in landfill leachate. However, there is no corresponding theoretical basis for whether microbial treatment technology can be used to reduce environmental risk of PAEs in informal landfills. Thus, a typical informal landfill site in northern
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Cadmium, lead, and zinc immobilization in soil by rice husk biochar in the presence of low molecular weight organic acids Environ. Technol. (IF 2.213) Pub Date : 2021-01-29 Shoffikul Islam Md.; Ziteng Song; Ruili Gao; Qingling Fu; Hongqing Hu
Abstract Heavy metal immobilization using biochar (BC) is different from the usual soil incubation due to the low molecular weight organic acids (LMWOAs) in the rhizosphere and is an issue worth evaluating. Therefore, the impacts of rice husk BC (5%), tartaric acid, and oxalic acid, coupled with combinations of BC and tartaric acid/oxalic acid on the transformation of cadmium (Cd), lead (Pb), and zinc
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Influence of HRT and carbon source on the enhancement of nutrient removal in an anaerobic-oxic-anoxic (AOA) system Environ. Technol. (IF 2.213) Pub Date : 2021-01-27 Thayse Nathalie Ferro; Karina Querne de Carvalho; Mateus Xavier de Lima; Ana Cláudia Barana; Cristiane Kreutz; Olga Regina Gauza; Fernando Hermes Passig
ABSTRACT The eutrophication and increase in toxicity promoted by the continuous or abundant supply of nutrients in water bodies threaten the safety of drinking water and human health. In this regard, this study proposes the investigation of wastewater treatment focusing on the simultaneous removal of nitrogen and phosphorus in the anaerobic-oxic-anoxic (AOA) system. The AOA system was operated in three
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Evaluation Of Potential Feedstock For Biogas Production Via Anaerobic Digestion In Malaysia: Kinetic Studies And Economics Analysis Environ. Technol. (IF 2.213) Pub Date : 2021-01-27 Yik Fu Lim; Yi Jing Chan; Yousif Abdalla Abakr; Vasanthi Sethu; Anurita Selvarajoo; Ajit Singh; Junyan Lee; Milton Gareth
Abstract As the population increases, energy demands continue to rise rapidly. In order to satisfy this increasing energy demand, biogas offers a potential alternative. Biogas is economically viable to be produced through anaerobic digestion (AD) from various biomass feedstocks that are readily available in Malaysia, such as food waste (FW), palm oil mill effluent (POME), garden waste (GW), landfill
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Paradox of Environ. Technol. (IF 2.213) Pub Date : 2021-01-27 Alla P. Toropova; Andrey A. Toropov; Anna Lombardo; Giovanna Lavado; Emilio Benfenati
Abstract The persistence of organic pollutants is an important environmental property due to the extended possibility to have an impact of corresponding substances. In many cases, the experimental values of the thousands of contaminants are missing. The object of the study is novel computational modeling for air pollutions. Quantitative structure–property relationship (QSPR) for air half-life has been
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Aeration and non-aeration cycles (AE / AN) time: influence in combined organic matter and nitrogen removal and features of biofilm Environ. Technol. (IF 2.213) Pub Date : 2021-01-27 Camila Souza Azevedo; Camila Zoe Correa; Deize Dias Lopes; Rodrigo Rossetto Pescim; Kátia Valéria Marques Cardoso Prates; Ana Cláudia Barana
Abstract This research aimed the performance evaluation of a structured-bed reactor with different cycles of Intermittent Aeration (IA)(SBRRIA) in the municipal sewage treatment and the verification of the effect of IA cycles on the total nitrogen (TN) removal and organic matter (COD). Three IA cycles were evaluated: phase I (4h AE (aeration on) - 2h NA (aeration off)); II (2h AE - 1h NA) and III (2h
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Bioremediation of greywater using a novel bacterial-fungal consortium: optimization and validation of the operating parameters in-vitro Environ. Technol. (IF 2.213) Pub Date : 2021-01-27 Nikita Rajpal; Jatinder K. Ratan; Neetu Divya; Ananda Vardhan Hebbani
Abstract In the present study, removal of pollutants in greywater (GW) was investigated using a novel bacterial-fungal consortium. Response surface methodology (RSM) was used for the optimization of process variables like pH, temperature, inoculum size, and Carbon- Nitrogen (C/N ratio) for degradation of pollutants. Experiments were based on Box Behnken statistical design and the results show a good
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Effective adsorptive removal of textile pollutant using coal bottom ash with high surface area obtained by alkaline fusion route Environ. Technol. (IF 2.213) Pub Date : 2021-01-27 Fernanda C. Drumm; Dison S. P. Franco; Patrícia Grassi; Jordana Georgin; Edson L. Foletto; Guilherme L. Dotto; Sérgio L. Jahn
Abstract In this work, coal bottom ash was modified by alkaline fusion route in order to improve its pore properties and make it a potential adsorbent to remove crystal violet dye from aqueous medium. The solids were characterized and posteriorly subjected to kinetic, isotherm, and thermodynamic studies, as well as regenerated and reused for five adsorption tests. The alkaline fusion step resulted
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Electrochemical regeneration of hexavalent chromium from aqueous solutions in a gas sparged parallel plate reactor Environ. Technol. (IF 2.213) Pub Date : 2021-01-26 N. K. Amin; S. A. Nosier; M. H. Abdel-Aziz; M. S. Hassan; G. H. Sedahmed; M. A. El-Naggar
Abstract In this study anodic oxidation of Cr2(SO4)3 was carried out in an air-sparged divided parallel plate cell. Variables studied were current density, Cr2(SO4)3 concentration, and superficial air velocity. The rate constant of Cr2(SO4)3 oxidation was found to increase with increasing current density and Cr2(SO4)3 concentration. The effect of air sparging was found to depend on Cr2(SO4)3 concentrations
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Catalytic degradation of dinotefuran by dielectric barrier discharge plasma combined with La-doping TiO2 Environ. Technol. (IF 2.213) Pub Date : 2021-01-25 Yixuan Huang; Dan Guo; Yongyang Chen; Yanjia Xu; Hao Chen; Xiaochun Dong; Shanping Li
ABSTRACT Degradation of neonicotinoid insecticide dinotefuran (DIN) in dielectric barrier discharge (DBD) non-thermal plasma combined with lanthanum-doped titanium dioxide (La-TiO2) system was investigated. A La-TiO2 catalyst was prepared by the sol-gel method and characterized by SEM, XRD, and DRS. The effects of various factors (initial concentration, initial pH, input power, and addition of metal
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Emanating challenges in urban and healthcare waste management in Isfahan, Iran after the outbreak of COVID-19 Environ. Technol. (IF 2.213) Pub Date : 2020-12-28 Ali Daryabeigi Zand; Azar Vaezi Heir
ABSTRACT This study aims to investigate the emanating challenges in urban and healthcare waste management in Isfahan, after the new Coronavirus outbreak. Production of ‘dry wastes’ in Isfahan, with a population of more than 1.9 million, has increased during the pandemic. Personal protective equipments (PPEs) including face masks, single-use gloves and face shields are an emerging group of materials
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Microflora communities which can convert digested sludge to biogas Environ. Technol. (IF 2.213) Pub Date : 2021-01-21 Ayaka Kon; Shunsuke Omata; Yuhei Hayakawa; Nobuhiro Aburai; Katsuhiko Fujii
ABSTRACT In the present study, we developed several microflora communities that utilize digested sludge (DS), the recalcitrant waste product of anaerobic digestion, as a substrate for biogas production with the aim of their future application to DS recycling. Strict enrichment with DS as the sole nutrient source was introduced to culture microbes from soil and herbivore dung samples; microflora communities
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Effects of the induction of anoxia in photobioreactor on effective cultivation of Scenedesmus acuminatus under mixotrophic cultivation mode Environ. Technol. (IF 2.213) Pub Date : 2021-01-21 Mi Na Rhie; Kai Hong; Taeyoon Lee
Abstract: The purpose of this study was to investigate the optimum conditions of several factors (i.e., types and concentration of acetate, aeration rate, pH control) for maximizing the mixotrophic cultivation of Scenedesmus acuminatus using acetate as an organic carbon source. When acetate was used, dissolved oxygen (DO) was quickly consumed and resulted in an anoxic condition for 52 hrs. Then, DO
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Electrooxidation of coragen-contaminated wastewater using graphite electrodes and sorbent nano-hydroxyapatite Environ. Technol. (IF 2.213) Pub Date : 2021-01-20 Ramya Thangamani; Premkumar Manickam Periyaraman; Amudha Thanarasu; Karthikeyan Velayutham; Anuradha Dhanasekaran; Sivanesan Subramanian
ABSTRACT The degradation of coragen (C18H14N5O2BrCl2) was tested by the electrooxidation process using graphite electrodes. Further, the advantage of nano-hydroxyapatite (n-Hap), as a cost-effective nano sorbent, in the removal of bromide from coragen was examined. Three different variables such as initial pH, electrolysis time and the current density were used to analyse the effects of the electrolytic
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Treatment and recycling of acidic fracturing flowback fluid Environ. Technol. (IF 2.213) Pub Date : 2021-01-19 Fu Chen; Kuntai Wang; Mina Luo; Tao Bu; Xuefang Yuan; Guoyong Du; Hongjun Wu
Abstract Acidic fracturing flowback fluid (AFFF) has the characteristics of low pH value, high chemical oxygen demand (COD), high corrosiveness and complex components. Surface discharge without treatment may contaminate the environment. However, wastewater treatment after centralized transportation has potential safety risks and requires high costs. In this study, we confirmed that calcium and magnesium
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Effect of CO2/H2O on adsorptive removal of H2S/SO2 mixture Environ. Technol. (IF 2.213) Pub Date : 2021-01-19 Jianyu Xuan; Chenyang Wang; Lin Zhang; Qun Cui; Haiyan Wang
ABSTRACT Few studies focus on the simultaneous removal performance and mechanism of H2S and SO2 mixture in Claus tail gas with a high concentration of H2O (20–30 vol.%) and CO2 (8–10 vol.%). In this paper, the effects of H2O and CO2 on the simultaneous removal of H2S and SO2 for the by activated carbon (TL-1) were studied. Fresh (TL-1-F) and desulfurisation sulfur-loaded TL-1 activated samples (TL-1-E1
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Study on the Preparation Conditions and Degradation Performance of An Efficient Immobilized Microbial Agent for Marine Oil Pollution Environ. Technol. (IF 2.213) Pub Date : 2021-01-19 Xinge Fu; Tongtong Wu; Huashan Li; Jianliang Xue; Jingkuan Sun; Lin Li; Yanlu Qiao; Chao Li
Abstract In the process of handling marine oil spills accidents, the biological method has attracted wide attention due to its low cost and no secondary pollution. However, in the process of practical application, there are problems such as low microbial density and great influence of environmental factors when the oil is treated by spraying microorganisms on the sea surface. This study used immobilized
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Adsorption of methylene blue by Nicandra physaloides(L.) Gaertn seed gum / grapheme oxide aerogel Environ. Technol. (IF 2.213) Pub Date : 2021-01-15 Liubo Li; Yanhui Li; Kai Yang; Meixiu Li; Xinyu Luan; Yong Sun; Huimin Wang; Qinye Sun; Kaili Tang; Heng Zheng; Mingfei Cui; Wenshuo Xu
Abstract: In this study, a novel composite aerogel of Nicandra physaloides(L.) Gaertn seed gum /graphene oxide (NPG/GO) was prepared by using a vacuum freeze drying method for methylene blue (MB) adsorption. The techniques including Brunauer–Emmett–Teller (BET), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) were adopted for studying the structure and surface
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Improving removal rate and efficiency of As(V) by sulfide from strongly acidic wastewater in a modified photochemical reactor Environ. Technol. (IF 2.213) Pub Date : 2021-01-15 Linghao Kong; Yuchen Wang; Xingyun Hu; Xianjia Peng; Zhinlin Xia; Jianbing Wang
ABSTRACT: Employing ultraviolet light to enhance the removal of As(V) by sulfide (S(-II)) from strongly acidic wastewater is a potential method. However, we found the arsenic trisulfide (As2S3) and elemental sulfur (S8) particles formed in this method not only vastly hinder light transmission in the wastewater but also undergo light-induced redissolution, leading to a decrease in removal rate and efficiency
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A simple electrochemiluminesecence aptasenor using a GCE/NCQDs/aptamers for detection of Pb Environ. Technol. (IF 2.213) Pub Date : 2021-01-11 Danyang Li; Chi Chen; Xuefei Guo; Changxia Liu; Wensheng Yang
ABSTRACT An electrochemiluminescence (ECL) aptasensor was prepared to detect Pb2+ with nitrogen-doped carbon quantum dots (NCQDs) as ECL materials. To prepare the working electrode, NCQDs with carboxyl groups were loaded on a glassy carbon electrode (GCE) and then Pb2+ aptamers were covalently bound to the NCQDs to form a stable GCE/NCQDs/aptamers. On addition of Pb2+, the chain aptamers change to
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Does energy innovation play a role in achieving sustainable development goals in BRICS countries? Environ. Technol. (IF 2.213) Pub Date : 2021-01-11 Muhammad Awais Baloch; Khan Danish; Qiu Yiting
Abstract It is widely discussed that greenhouse gases (GHGs) are the main culprit behind global warming. The conventional energy sources (oil, coal, and gas) mainly realize GHGs in the atmosphere. Due to this, the world’s countries are switching towards clean energy sources and investing more in projects related to innovation in the energy sector. Thus, this study investigates the role of energy innovation
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Nitrite removal by Acinetobacter sp.TX5: a candidate of curbing N2O emission Environ. Technol. (IF 2.213) Pub Date : 2021-01-11 Shuqian Sun; Xiaohui Bi; Bin Yang; Weihong Zhang; Xinyu Zhang; Jibo Xiao; Yunlong Yang; Zhida Huang
Abstract The nitrite removal pathway in Acinetobacter sp. TX5 was explored through the key gene identification and the corresponding enzyme purification, after which the capability to reduce nitrite by immobilized beads was investigated in a fixed-bed reactor. Results revealed that a nosZ gene encoding nitrous oxide reductase (N2OR) exists in TX5 cells, and a N2OR responsible for the reduction of N2O
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Effect of air and water on the release of chlorine from semi-aerobic landfill Environ. Technol. (IF 2.213) Pub Date : 2021-01-10 Dongyun Liu; Jing Xu; Yuan Fang; Yao Du; Lifang Hu; Chengran Fang; Dongsheng Shen; Yuyang Long
ABSTRACT Landfill leachate has a high chloride (Cl−) content. Because it is highly mobile, and cannot be sorbed or transformed bio-chemically, it is important to have detailed information about how it migrates in landfill sites. In this study, we set up four lab-scale simulated landfills, including an anaerobic landfill (AL), an anaerobic landfill with leachate recirculation (RAL), an anaerobic/semi-anaerobic
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Thermal and mass transfer properties of a shrinkable industrial sludge: experimental determination and modeling approach Environ. Technol. (IF 2.213) Pub Date : 2021-01-06 Al Ahmad Layth; Latrille Christelle; Hainos Delphine; Blanc Denise; Clausse Marc
Abstract In this study the thermo-physical and mechanical properties of an industrial sludge like shrinkage coefficient, density, water activity, apparent moisture diffusivity, effective thermal conductivity and heat capacity are determined experimentally. These properties constitute a major part of the required input data to model the sludge drying. The sludge shrinks linearly until reaching a critical
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Permeable membrane dewatering of faecal sludge from pit latrines at a transfer station in Nairobi, Kenya Environ. Technol. (IF 2.213) Pub Date : 2021-01-05 Leandra Rhodes-Dicker; Barbara J. Ward; Wali Mwalugongo; Lindsay Stradley
Abstract Faecal sludge dewatering is often a necessary step in many treatment and reuse processes, and it can decrease costs of transporting large volumes of high water content sludge. Common dewatering methods such as settling-thickening tanks and drying beds are not feasible in space-constrained areas such as urban informal settlements, therefore innovative dewatering methods are needed. This study
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Closed-loop Organic Waste Management Systems for Family Farmers in Brazil Environ. Technol. (IF 2.213) Pub Date : 2021-01-05 René van der Velden; Warde da Fonseca-Zang; Joachim Zang; Dominic Clyde-Smith; Wilson M. Leandro; Priti Parikh; Aiduan Borrion; Luiza C. Campos
Abstract Family farmers in Brazil could diversify their sources of income source and improve agriculture practices by adopting circular economy principles on their farms. Closed-loop technological systems can be used to manage organic waste and produce fertilizer and biogas thereby generating revenue. Anaerobic digestion is a proven technology that can produce digestate (i.e. fertilizer) and biogas
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Copper ferrocyanide chemically immobilized onto a polyvinylidene fluoride hollow-fiber membrane surface for the removal of aqueous cesium Environ. Technol. (IF 2.213) Pub Date : 2021-01-04 Hyun-Kyu Lee; Sang-June Choi
Abstract A method of chemically bonding copper ferrocynide (CuFC) to the surface of a PVDF hollow-fiber membrane (PVDF-CuFC) was designed and the resulting PVDF-CuFC was applied to the effective removal of aqueous cesium (Cs). In order to chemically immobilize CuFC on the surface of the PVDF hollow-fiber membrane, carboxyl groups were introduced onto the membrane surface (PVDF-COOH) to peptide bond
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Spherical mesoporous silica designed for the removal of methylene blue from water under strong acidic conditions Environ. Technol. (IF 2.213) Pub Date : 2021-01-02 Felipe do Casal de Paula; Luciane Effting; Gregório Guadalupe Carbajal Arízaga; Renata Mello Giona; Andre Luiz Tessaro; Fabricio Maestá Bezerra; Alesandro Bail
Abstract This work proposes a novel technology for environmental remediation based on mesoporous silica spheres, which were successfully synthesized by the solvothermal method using the cetyltrimethylammonium bromide as a structuring agent. The adsorbent was designed to remove cationic dyes at strong acidic conditions. The surface was modified by a careful thermal treatment aiming at the condensation
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Effects of combined ultrasonic and grinding pre-treatments on anaerobic digestion of vinegar residue: organic solubilization, hydrolysis, and CH4 production Environ. Technol. (IF 2.213) Pub Date : 2020-12-30 Xin Kong; Zafiry Defemur; Mingkai Li; Qiang Zhang; Hua Li; Xiuping Yue
Abstract The high lignocellulose content of vinegar residues (VR) limits their biochemical methane potential (BMP) in anaerobic digestion (AD). However, unlike reported high cellulosic materials such as straw and grass, single pre-treatment with ultrasonication or grinding only slightly improved VR AD, due to the high protein and carbohydrate contents of VR. This study used statistical analysis show
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Valorization of poultry slaughterhouse sludge oil: a strategy to reduce Brazil’s dependency on soybean oil in the biodiesel industry Environ. Technol. (IF 2.213) Pub Date : 2020-12-24 Sheila Simone Kunh; Cristie Luis Kugelmeier; Fabiana de Marqui Mantovan; Guilherme Felipe Lenz; Natalia Meinl Schmiedt Sattolo; Maria Cristina Milinsk; Helton José Alves
ABSTRACT During the poultry industrialization process the so-called sludge oil, a residual chicken fat, is recovered in the wastewater treatment plant and its use presents potential as raw material for biodiesel production. Thus, the aim of the study was to prepare blends of sludge oil with soybean oil to obtain fatty acid methyl esters (FAME) through the homogeneous alkaline transesterification reaction
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Biohythane production from food waste in a two-stage process: Assessing the energy recovery potential Environ. Technol. (IF 2.213) Pub Date : 2020-12-24 Anish Ghimire; Vincenzo Luongo; Luigi Frunzo; Piet NL Lens; Francesco Pirozzi; Giovanni Esposito
Abstract Biohythane (hydrogen + methane) production in a two stage dark fermentation (DF) and anaerobic digestion (AD) process from food waste (FW) has been studied. This paper investigated the effect of operation temperature, i.e. mesophilic (34 °C and thermophilic (55 ° 2 °C, on biohythane yield and total energy recovery in batch tests carried out at the initial culture pH 5.5. The mesophilic DF
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Highly Efficient Oxidative-Alkaline-Leaching Process of Vanadium-Chromium Reducing Residue and Parameters Optimization by Response Surface Methodology Environ. Technol. (IF 2.213) Pub Date : 2020-12-24 Hao Peng; Qian Shang; Ronghua Chen; Liuying Zhang; Ya Chen; Jing Guo
Abstract Vanadium-chromium reducing residue was not only a typical solid waste in the steel industry but also a valuable secondary source for recovery of vanadium and chromium. A highly efficient oxidative-alkaline-leaching technology with Na2S2O8 was applied in this work. The effect of experimental factors including m(NaOH)/m(Residue), liquid-to-solid ratio, reaction temperature, m(Na2S2O8)/m(Residue)
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Decomposition of VOCs using serial surface dielectric barrier discharge reactors Environ. Technol. (IF 2.213) Pub Date : 2020-12-24 Hoang Phuong Nguyen; Christian Ariane Santos; Tae Jung Lee; Young Koo Park; Young Min Jo
ABSTRACT Decomposition of two typical volatile organic compounds (VOCs): toluene and methyl ethyl ketone (MEK), was investigated by introducing the complete energy yield (i.e., amount of VOCs totally converted to CO and CO2 for every 1 kWh of electrical usage) and specific energy density (SED) for the non-thermal plasma technology. Three dielectric barrier discharge reactors of which specific energy
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Highly Selective and Antifouling Reverse Osmosis Membrane by crosslinkers induced Surface Modification Environ. Technol. (IF 2.213) Pub Date : 2020-12-24 Ashish R. Kavaiya; Hiren D. Raval
Abstract Post treatment is a very competent and scalable approach to develop the higher water-flux and salt-rejection membrane since, it does not require any change in existing manufacturing process. The virgin Thin Film Composite Reverse Osmosis (TFC-RO) membrane was exposed to various concentrations of Poly (ethylene Glycol) diacrylate (PEGDA) and Ethylene glycol dimethacrylate (EGDMA) after activation
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Biomolecules containing powder produced by spray drying technology for weed control Environ. Technol. (IF 2.213) Pub Date : 2020-12-21 Thiarles Brun; Jéssica E. Rabuske; Luciana Luft; Tássia C. Confortin; Izelmar Todero; Bruno C. Aita; Giovani L. Zabot; Marcio A. Mazutti
Abstract This study describes the use of spray drying technology to obtain biomolecules containing powder from Diaporthe schini with herbicidal activity produced by submerged fermentation. The efficiency of the bioherbicide was tested for the post-emergence control of Bidens pilosa L., Amaranthus viridis L., Echinochloa crusgalli (L.) Beauv., and Lolium multiflorum Lam. In the first step, different
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Indigenous Bacillus paramycoides spp. and Alcaligenes faecalis: sustainable solution for bioremediation of hospital wastewater Environ. Technol. (IF 2.213) Pub Date : 2020-12-20 Aneeba Rashid; Safdar A. Mirza; Ciara Keating; Sikander Ali; Luiza C. Campos
ABSTRACT Farmers near towns and cities are using a wide range of highly polluted wastewaters for crop irrigation in Pakistan due to severe freshwater shortage. The present study aimed to promote indigenous bacterial strains isolated from domestic, hospital, textile, pharmaceutical and mixed wastewaters to remove contaminants and colour and render these wastewaters safer for irrigation. Thirty seven
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Detection and removal of Giardia spp. cysts and Cryptosporidium spp. oocysts by anaerobic reactors in Brazil Environ. Technol. (IF 2.213) Pub Date : 2020-12-18 Fernanda Queiroz Valdez; Luan de Souza Leite; José Antônio Zanetoni Filho; Mariana Daniel Tango; Luiz Antonio Daniel
ABSTRACT The discharge of raw wastewater into the environment can be a contamination source of Giardia spp. cysts and Cryptosporidium spp. oocysts. The UASB (Upflow Anaerobic Sludge Blanket) reactor is the most popular technology applied for wastewater treatment in Brazil, nevertheless there is little information concerning its capacity for (oo)cyst removal. In this context, this study investigated
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Selective Adsorption of Lead(II) from Aqueous Solution Environ. Technol. (IF 2.213) Pub Date : 2020-12-17 Viet Anh Hoang; Syouhei Nishihama; Kazuharu Yoshizuka
Abstract: Adsorptive separation of Pb(II) from aqueous solution containing Pb(II) and other heavy metals (Cu(II), Zn(II), and Cd(II)) has been investigated, using three adsorbents, such as an iminodiacetic acid-chelating resin (CR11), and Fe-based adsorbents (goethite and magnetite). Batchwise adsorption of Pb(II) and other metal ions in single metal system and multi-components system was carried out
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Preparation and characterization of polysulfone-polyurethane membranes for recovery of simulated wastewater from industrial textile processes Environ. Technol. (IF 2.213) Pub Date : 2020-12-17 N. J. Bogoni; C. R. Schut; J. Z. Merck; J. Duarte; C. M. Menezes; M. Giovanela; M. A. Zeni; C. Marangoni; J. S. Crespo
Abstract Techniques using membranes for the treatment of wastewaters usually promote higher quality of treated water when compared to other processes. Among them, pervaporation has advantages in terms of selectivity in addition to low working pressure, which can prevent clogging problems. Polysulfone and polyurethane have complementary characteristics and are interesting in the context of membranes
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Desalination of Saline Water via Forward Osmosis using Magnetic Nanoparticles Covalently Functionalized with Citrate Ions as Osmotic Agent Environ. Technol. (IF 2.213) Pub Date : 2020-12-17 Fazeleh Khazaie; Shabnam Sheshmani; Soheila Shokrollahzadeh; Ashraf S. Shahvelayati
ABSTRACT Forward osmosis is an emerging membrane technology in water desalination. In this study, desalination of saline water via forward osmosis was investigated using a new magnetic osmotic agent. For this purpose, Fe3O4 nanoparticles covalently functionalized with tri-sodium citrate was synthesized and characterized. The structural examinations revealed that the sodium citrate had been immobilized
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Reusability in visible light of titanate nanotubes for the removal of organic pollutants: role of calcination temperature. Environ. Technol. (IF 2.213) Pub Date : 2020-12-17 Ana Laura Ruiz-Castillo; Mariana Hinojosa-Reyes; Roberto Camposeco-Solis; Facundo Ruiz
ABSTRACT Titanate nanotubes (NTs) were synthesized by the hydrothermal method and later calcined at temperatures between 100 – 500 °C. The calcined NTs were characterized and evaluated in the physicochemical adsorption of the safranin dye and photocatalytic degradation of caffeine. The materials calcined at low temperatures displayed a tubular structure and the H2Ti3O7 crystalline phase, which was
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Emanating challenges in urban and healthcare waste management in Isfahan, Iran after the outbreak of COVID-19 Environ. Technol. (IF 2.213) Pub Date : 2020-12-17 Ali Daryabeigi Zand; Azar Vaezi Heir
Abstract This study aims to investigate the emanating challenges in urban and healthcare waste management in Isfahan, after the new Coronavirus outbreak. Production of “dry wastes” in Isfahan, with a population of more than 1.9 million, has increased during the pandemic. Personal protective equipments (PPEs) including face masks, single-use gloves and face shields are an emerging group of materials
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Characterization of refuse derived fuel samples prepared from municipal solid waste in Vellore, India Environ. Technol. (IF 2.213) Pub Date : 2020-12-16 Bonny Thawani; Biswanath Mahanty; Shishir Kumar Behera
ABSTRACT The objective of this work was to explore an alternative way to manage the non-biodegradable and non-recyclable fraction of municipal solid waste (MSW) in Vellore city, India. Refuse-derived fuel (RDF) samples with different proportions of plastic, thermocol, foam and jute straw were formulated. The RDF samples were characterized in the form of heating values (proximate and ultimate analysis)
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