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Acidithiobacillus ferrooxidans Leaching of Silica-Sulfide Gold Ores from May-Hibey Deposits, Tigray, Ethiopia Int. J. Chem. Eng. (IF 2.7) Pub Date : 2024-3-8 Goitom Gebreyohannes Berhe, Desta Berhe Sbhatu, Samuel Estifanos Gebre, Kiros Hagos Abay, Genet Gebryohannes Mhretu, Gebrekidan Mebrahtu Tesfamariam, Samuel Alemayehu Lapiso, Mulugeta Sisay Cheru, Afewerk Gebre Meressa
Oxidative leaching is an inexpensive alternative to using chemical cyanide extraction methods for gold from low-grade gold sulfide. Oxidation of finely ground gold-bearing ore by Acidithiobacillus ferrooxidans was evaluated in terms of cell density, pH, and leaching efficiency of Fe and Au in shake flask experiments. The compositional and elemental analyses of the beneficiated ore were analyzed using
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Optimization of Ultrasonic-Assisted Extraction of Phenolics and Terpenoids from Sweet Basil Leaves Using Natural Deep Eutectic Solvents Int. J. Chem. Eng. (IF 2.7) Pub Date : 2024-2-28 Tan Phat Vo, Thuy Han Phan, Nguyen Thuc Doan Luu, Thi Bich Xuong Tran, Nhat Quyen Pham, Thai Anh Thi Ho, Nguyen Minh Huy Ha, Minh Thu Nguyen, Dinh Quan Nguyen
This investigation focused on assessing and enhancing ultrasound-assisted extraction (UAE) using natural deep eutectic solvents (NADES) to extract phenolics and terpenoids from sweet basil leaves. The initial stage involved evaluating the extraction performance of twelve NADES and ethanol. A NADES comprising lactic acid and glucose with a 2 : 1 molar ratio and 20% water content (WC) obtained the highest
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Optimum Green Synthesis, Characterization, and Antibacterial Activity of Silver Nanoparticles Prepared from an Extract of Aloe fleurentinorum Int. J. Chem. Eng. (IF 2.7) Pub Date : 2024-2-26 Yasmin M. S. Jamil, Ahmed N. Al-Hakimi, Hussein M. A. Al-Maydama, Ghadeer Y. Almahwiti, Ashwaq Qasem, Sayed M. Saleh
The synthesis of metal nanoparticles through the use of plant extract is a process that is not only simple but also inexpensive, quick, and favorable to the environment. As a result, it is utilized in a wide variety of fields. When synthesizing silver nanoparticles (AgNPs), several different kinds of plant extracts were utilized. The manufacture of silver nanoparticles was carried out in this study
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Numerical Integration of Some Arbitrary Functions over an Ellipsoid by Discretizing into Hexahedral Elements for Biomaterial Studies Int. J. Chem. Eng. (IF 2.7) Pub Date : 2024-2-19 T. M. Mamatha, B. Venkatesh, P. Senthil Kumar, S. Mullai Venthan, M. S. Nisha, Gayathri Rangasamy
This study mathematically examines chemical and biomaterial models by employing the finite element method. Unshaped biomaterials’ complex structures have been numerically analyzed using Gaussian quadrature rules. It has been analyzed for commercial benefits of chemical engineering and biomaterials as well as biorefinery fields. For the computational work, the ellipsoid has been taken as a model, and
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Enhanced Biochar Production via Co-Pyrolysis of Biomass Residual with Plastic Waste after Recycling Process Int. J. Chem. Eng. (IF 2.7) Pub Date : 2024-2-17 Sukanya Hongthong, Worachate Sangsida, Surachai Wongcharee, Aitsara Chanthakhot, Poramed Aungthitipan, Kowit Suwannahong, Torpong Kreetachat, Javier Rioyo
Biomass pyrolysis for oil production results in biochar byproduct, whose characteristics can be improved by the reuse of waste plastics. While the plastic recycling process leads to a large amount of plastic waste that cannot be reused, this underutilized feedstock holds the potential for coprocessing with biomass, thereby increasing the likelihood of producing valuable biochar products. This study
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Biogas Production through Anaerobic Codigestion of Distillery Wastewater Sludge and Disposable Spent Yeast Int. J. Chem. Eng. (IF 2.7) Pub Date : 2024-2-8 Abu Duguma, Tadele Bekele, Abera Geda
The ongoing industrial transformation in developing countries, including Ethiopia, has resulted in a significant increase in harmful pollutants in the environment. Various industrial activities release toxic wastewater sludge and spent yeast into the surrounding ecosystem, posing risks to public health and the environment. However, these waste materials have the potential for energy extraction and
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Research on the Aerodynamic Noise Characteristics of Heat Exchanger Tube Bundles Based on a Hybrid URANS-FWH Method Int. J. Chem. Eng. (IF 2.7) Pub Date : 2024-1-31 Guofeng Huang, Heng Wang, Sheng Tian, Wei Tan
This paper examines the aerodynamic noise characteristics of heat exchanger tube bundles, with the objective of exploring the frequency and directional features of noise under nonacoustic resonance conditions, to provide assistance in determining acoustic resonance. To predict the flow-induced noise of tube bundles, this study employs a hybrid URANS-FWH method. The transition SST model of URANS is
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Synthesis of Lignin Nanoparticles and Their Application in the Stabilization of Water-in-Water Pickering Emulsions: A New Technology for Valorization of Lignin from Sugarcane Bagasse Int. J. Chem. Eng. (IF 2.7) Pub Date : 2024-1-27 Marcelo da Silva Pedro, Davi Finamori Lopes Feitosa, José Daladiê Barreto da Costa Filho, Nathalia Saraiva Rios, Everaldo Silvino dos Santos, Domingos Fabiano de Santana Souza, Carlos Eduardo de Araújo Padilha, Jackson Araújo de Oliveira
Water-in-water (w/w) emulsions can mimic biological environments, and their stability is ensured by adding nanoparticles capable of adsorbing at liquid-liquid interfaces. To enhance the properties of w/w emulsions, there is a search for new sources of nanoparticles that are attractive for the food and biomedical fields. Thus, the present study investigated the use of sugarcane bagasse lignin (a cheap
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Response Analysis of an Experimental Study on the Effect of Speed and Premixed Fuel Ratio on Performance and Emissions in RCCI Engine Int. J. Chem. Eng. (IF 2.7) Pub Date : 2024-1-4 Habtamu Deresso Disassa, Venkata Ramayya Ancha, Ramesh Babu Nallamothu, Bisrat Yoseph, Getachew Alemayehu
Even though CI engines are more efficient than SI engines due to their ability to operate at a greater compression ratio, a leaner charge, and lower throttle losses, they have higher PM and nitrogen oxide emissions. The induction system modification with fuel port injection is used as a parameter in RCCI engine operations for controlling emission through in-cylinder charge reactivity and combustion
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ZSM-5/γ-Al2O3 Catalysts for Methanol Dehydration: Tuning Pore Structure by Carbon Nanotubes as a Pore-Forming Agent Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-12-27 Ivan Pokatilov, Valentina Gritsenko, Alexey Zhokh, Peter Strizhak
ZSM-5/γ-Al2O3 composites are synthesized using multiwall carbon nanotubes as a pore-forming agent. The as-prepared composites are characterized by nitrogen adsorption, X-ray diffraction, X-ray fluorescence, TEM, SEM, FT-IR spectroscopy, and pyridine adsorption. The as-prepared composites exhibit significantly different physicochemical properties depending on the synthesis technique. The catalytic activity
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Comprehensive Evaluation of the Performances of Heat Exchangers with Aluminum and Copper Finned Tubes Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-12-20 Fang Wang, Yunding Li, Mengwei Liu, Dongqing Pang, Weifeng Du, Yichi Zhang, Xiaoqian Cheng, Tangtang Gu, Wenliang Guo
The finned-tube heat exchanger is the core part of an air conditioning system. Its heat exchange performance directly affects the energy consumption and efficiency of the air conditioner. The shortage and rising price of copper have led to increasing replacement of copper tubes with aluminum tubes in finned-tube heat exchangers. This paper studies two kinds of such heat exchangers, one consisting of
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Modeling and Design of a Multistream Plate-Fin Heat Exchanger in the Air Separation Units by Pinch Technology Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-11-30 Nazar Oudah Mousa Alyaseen, Salem Mehrzad, Mohammad Reza Saffarian
Recent years have seen considerable advancement in cryogenic technology. Air separation devices have used the cold box with heat exchanger plate-fin (PFHE) in numerous applications. Cryogenic technologies are used in many industrial processes to recover heat and reduce energy consumption. The multistream plate-fin heat exchanger (MSPFHE) is heavily utilized in the air separation plant’s (ASU) design
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An Experimental Analysis of Lean Binary Mixture Segregation in a Continuous Liquid Fluidized Bed Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-11-9 S. Narasimha Reddy, M. Venkata Ratnam
This study examined the phenomenon of particle segregation in lean-phase binary mixtures, with a specific focus on the effect of particle size variations while flowing over a continuous liquid fluidized bed (LFB). The experimental configuration included a cylindrical column with a 72 mm internal diameter and 3 m vertical height. The binary mixture considered for this investigation was made up of solid
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Xylanase-Producing Microbes and Their Real-World Application Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-11-1 Milan Phuyal, Uttam Budhathoki, Durga Bista, Shailendra Shakya, Rajan Shrestha, Ashwinee Kumar Shrestha
The present study is focused on the availability of microbial sources capable of producing xylanase, a hemicelluloses-degrading enzyme with multiple modes of action along with specificity, and their real-world applications. For the accumulation of suitable data, article surfing was carried out using multiple search engines viz. Hinari and PubMed; irrelevant and duplicate articles were discarded and
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Esterification of Oleic Acid for Biodiesel Production Using a Semibatch Atomization Apparatus Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-10-30 Marcell S. Deus, Katherine C. O. Deus, Daniel S. Lira, Jackson A. Oliveira, Carlos E. A. Padilha, Domingos F. S. Souza
Although biodiesel production is undoubtedly a mature technology, there are still ways to improve it, especially through process intensification. The present study investigated the esterification of oleic acid with ethanol for biodiesel production in a nonconventional atomization reactor. The effects of the oleic acid flow rate (1.3, 2.6, and 3.9 g/min), atomization pressure (50, 100, and 150 kPa)
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Simulation of Multiphase Flow and Mixing in a Conveying Element of a Co-Rotating Twin-Screw Extruder by Using SPH Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-10-28 Tianwen Dong, Jianchun Wu, Yufei Ruan, Jiawen Huang, Shiyu Jiang
Multiphase flows and mixing in partially filled conveying elements of twin-screw extruders (TSEs) were simulated by using smoothed-particle hydrodynamics (SPH). A validation of SPH using experiment from the literature for a co-rotating twin-cam mixer indicated good agreement. A two-phase Poiseuille flow was also used to validate the accuracy of our approach. The results of two-phase flow in TSE show
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Sequential Geometric Programming Method for Parameter Estimation of a Nonlinear System in Microbial Continuous Fermentation Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-10-10 Gongxian Xu, Zijia Liu
This paper addresses the problem of parameter estimation for the microbial continuous fermentation of glycerol to 1,3-propanediol. A nonlinear dynamical system is first presented to describe the microbial continuous fermentation. Some mathematical properties of the dynamical system in the microbial continuous fermentation are also presented. A parameter estimation model is proposed to estimate the
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Copper Selenide (CuSe) Monolith Fabricated by Facile Copper Foam Selenization for Efficient Photocatalytic Degradation of Methylene Blue Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-9-26 Yefan Wang, Shan Gao, Haoying Li, Yang Cao, Yijie Zhai, Niezheng Chen, Zequn Yang
A critical challenge that impedes the application of photocatalytic techniques for organic dye degradation from polluted industrial effluents is that traditional powdery photocatalysts exposed limited photo-absorption sites and exhibited inefficient recyclability. To overcome these challenges, this study designed a one-step process to synthesize a monolithic copper selenide (CuSe)-based photocatalyst
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Agrofood Waste and By-Product Valorization, Extraction, and Characterization of Pectin from the Waste Biomass Fruit Peel of Aframomum angustifolium Using Response Surface Methodology as Alternative Sources of a Functional Pectin Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-9-25 Akuro Blaise Mbaku, Pride Ndasi Ngwasiri, Wilson Agwanande Ambindei, Ngwa Martin Ngwabie, Martin Benoit Ngassoum
Applications of pectin in the food industry are strongly influenced by their source, structures, and extraction methods, which affect their functionalities. This research aims to extract and assess pectin’s physicochemical and functional properties from waste biomass peels of Aframomum angustifolium as an alternate source using acid (AAE) and microwave extraction (MAE) methods. Pectin extracted from
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Optimization of Mechanical Properties and Surface Characteristics of PLA+ 3D Printing Materials Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-8-21 Ali H. Kadhum, Salah Al-Zubaidi, Salah Sabeeh Abed AlKareem
Recently, there is a growing demand towards adopting 3D printing technology in various sectors due to its potential merits. The mechanical properties and surface quality of the final product are influenced by the process parameters. Therefore, this study aims to optimize the infill density and pattern beside printing speed and temperature to achieve optimum mechanical properties and surface characteristics
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Preparation of Tetra Pak-Based Hydrochars for Cleaning Water Polluted by Heavy Metal Ions: Physicochemical Properties and Removal Mechanism Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-8-2 Evelyn Mirelle Valdés-Rodríguez, Leonardo Frias-Gasparri, Didilia Ileana Mendoza-Castillo, Verónica Janeth Landin-Sandoval, Adrián Bonilla-Petriciolet
This paper addresses the analysis of hydrothermal carbonization of Tetra Pak residues using diluted sulfuric acid to obtain hydrochars for cleaning water polluted by heavy metal ions. The hydrochar samples were prepared under different carbonization conditions, and a detailed study of their composition, textural parameters, and surface functionalities was performed. It was found that the hydrothermal
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Study on Osmotic Consolidation and Hydraulic Conductivity Behavior of an Expansive Soil Inundated with Sodium Chloride Solution Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-7-19 S. Sathyapriya, R. Sharvesh, V. Karthik, Selvakumar Periyasamy, Venkatesa Prabhu Sundramurthy
Canals are a very imperative source of irrigation for the agricultural sector in India. Seepage causes major water loss in canals, and hence, the installation of liners becomes necessary. Compacted clay soils are commonly used as liners in the canals. This structure will most probably be subjected to salinization and desalinization cycles throughout its life. Because of the interaction between the
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Numerical Study to Define Initial Thermal Integration Window for Methane Oxidative Coupling with Dehydroaromatization Reactors Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-7-13 Muhammad Umar Jamil, Maria Haki, Nikolai Nesterenko, Stijn Van Daele, Alessandro Chieregato, Ma’moun Al-Rawashdeh
Oxidative coupling of methane and methane dehydroaromatization are attractive one-step conversion routes to make valuable platform chemicals more sustainable. Both processes require elevated temperatures above 600°C, good heat management, and the use of heterogeneous catalysts. None of these reactions are yet commercial due to many technical challenges. This work explores the potential of combining
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Development of Alumina-Titania Composite Layers on Stainless Steel through the Detonation Spray Method and Investigation of Salt Spray Corrosion Behavior along with Surface Examination Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-7-4 A. Surya, R. Prakash, P. Senthil Kumar, G. Bharath Balji
Almost every metal and alloy corrodes when used in high-temperature applications. To combat this problem, ceramic coatings on the metals can be deposited for better thermal and corrosion behavior. The present study applies an alumina-titania (Al2O3-TiO2) ceramic coating to the stainless steel (SS) surface using a detonation spray process. The surface of the coated SS is probed by optical microscopy
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Effects of Pyrrhotite on the Combustion Behavior and the Kinetic Mechanism of Pyrite-Pyrrhotite Mixture Powders in the Air Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-6-28 Changshun Tian, Yunzhang Rao, Gang Su, Tao Huang
In this study, we performed a comparative analysis of the combustion behavior of pyrite, pyrrhotite, and pyrite-pyrrhotite mixture (mixed mineral) powders in an air atmosphere. To study the influence of the pyrrhotite content in mixed mineral powders on the combustion behavior in the air, thermogravimetric mass spectrometry, X-ray diffraction analysis, and scanning electron microscopy were employed
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Geotechnical Investigation and Microanalysis of Black Cotton Soil Amended with Guar Gum and Polyethylene Terephlate Fibre Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-6-6 S. Sathyapriya, M. S. Abdul Fasith, P. Senthil Kumar, V. Karthik
Polymer-based soil stabilization has fascinated substantial interest in the field of research intending to gain a better knowledge of the anticipated soil characteristics after polymer treatment. Intricate research on the engineering performance of expansive soil which is highly challenging due to its swell and shrink nature based on variations in water regime, treated with guar gum, a biopolymer made
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The Effect of Sweeping Media and Temperature on Aqueous CO2 Removal Using Hollow Fiber Membrane Contactor (HFMC): An Experimental Determination Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-6-3 Hadi Tabesh, Mohammad Hossein Gholami, Marjan Marefat
Transport phenomena through hollow fiber membrane contactors (HFMCs) indicate the exchange of a component between the two phases, inside and outside of hollow fibers. In this research, we designed and fabricated lab-made HFMCs to assess the difference between water and air as sweeping media for CO2 exchange. The effects of flow rates and temperature ratios on aqueous CO2 absorption were investigated
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Analytical Steady-State Model for the Free Radical Solution Copolymerization of Acrylonitrile and Vinyl Acetate and Their Charge-Transfer Complex in a Continuous Stirred Tank Reactor Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-5-27 Oscar Meza-Díaz, Juan-Carlos Tapia-Picazo, Adrian Bonilla-Petriciolet, Gabriel Luna-Bárcenas, Daniel Alcalá-Sánchez, José-Enrique Jaime-Leal, Pedro-Jesús Herrera-Franco
In this study, a mathematical model of the copolymerization of AN-VA in a continuous stirred tank reactor (CSTR) was developed considering charge-transfer complexes (CTCs). CTC formation between acrylonitrile (AN) and vinyl acetate (VA) was demonstrated using UV-VIS spectrophotometry and molecular orbital theory. The rate constants and equilibrium constants of the complexes were calculated from a model
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Kinetic Study of Zirconia-Alumina-Supported Ni-Fe Catalyst for Dry Reforming of Methane: Impact of Partial Pressure and Reaction Temperature Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-5-11 Ahmed Al-Fatesh, Kenit Acharya, Ahmed I. Osman, Ghzzai Almutairi, Anis Hamza Fakeeha, Ahmed Elhag Abasaeed, Yousef A. Al-Baqmaa, Rawesh Kumar
A better understanding of the reaction mechanism and kinetics of dry reforming of methane (DRM) remains challenging, necessitating additional research to develop robust catalytic systems with high catalytic performance, low cost, and high stability. Herein, we prepared a zirconia-alumina-supported Ni-Fe catalyst and used it for DRM. Different partial pressures and temperatures are used to test the
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Copper-Doped Zinc Oxide Nanoparticles: Synthesis, Characterization, and Application for Adsorptive Removal of Toxic Azo Dye Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-4-29 Bandela Sowjanya, Pulipati King, Meena Vangalapati, Venkata Ratnam Myneni
The goal of this research was to employ copper-doped zinc oxide nanoparticles (Cu/ZnONPs) as an adsorbent to remove the potentially toxic azo dye Congo red (CR). The Cu/ZnONPs were made using a chemical coprecipitation method, and their characteristics were examined using XRD, SEM, EDS, and FTIR methods. The response surface methodology (RSM) central composite design (CCD) is used to optimize the operational
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Impact of Commercial Sugar as a Substrate in Single-Chamber Microbial Fuel Cells to Improve the Energy Production with Bioremediation of Metals Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-4-25 Mustapha Omenesa Idris, Nabil Al-Zaqri, Ismail Warad, Al-Mustasin Abir Hossain, Nahian Masud, Mohammed Ali
Microbial fuel cells (MFCs) have emerged as a viable method for bioremediation of toxic metals while also producing energy. In this paper, we examine the issue of organic substrate as a source of metabolism for microbe growth in MFC, as well as its significance for metal ion degradation in tandem with energy production. This study focused on the use of commercial sugar as an organic substrate in a
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Effects of Thermodiffusion and Chemical Reaction on Magnetohydrodynamic-Radiated Unsteady Flow Past an Exponentially Accelerated Inclined Permeable Plate Embedded in a Porous Medium Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-4-25 B. Prabhakar Reddy, M. H. Simba, Alfred Hugo
A finite difference computational study is conducted to assess the influence of thermodiffusion and chemical reaction on unsteady free convective radiated magnetohydrodynamic flow past an exponentially accelerated inclined permeable plate embedded in a saturated porous medium of uniform permeability with variable temperature and concentration. The governing nondimensional set of coupled nonlinear partial
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Anaerobic Codigestion of Tuber Waste and Fruit Waste: Synergy and Enhanced Biogas Production Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-4-19 Register Mrosso, Joseph Kiplagat, Achisa C. Mecha
Increased urbanization and consumerism have resulted in the excessive release of food waste and municipal solid waste. Such wastes contain abundant organic matter that can be transformed into energy, addressing the twin challenges of waste management and energy insecurity. In recent years, different studies have investigated ways of producing biogas through the codigestion of organic wastes. In this
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Domestic Organic Waste: A Potential Source to Produce the Energy via a Single-Chamber Microbial Fuel Cell Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-4-18 Amira Suriaty Yaakop, Akil Ahmad, Fida Hussain, Sang-Eun Oh, Mohammed B. Alshammari, Raju Chauhan
Microbial fuel cell (MFC) is a method that is both effective and environmentally friendly for producing renewable electricity. Several studies have shown that one of the major challenges is the generation of electrons as a result of poor exploitation of organic substrates. One of the most talked about issues in modern molecular fusion is the reutilization of biological organic waste in an MFC. In this
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Removal of Natural Organic Matter (NOM) from Aqueous Solutions by Multi-Walled Carbon Nanotube Modification with Magnetic Fe3O4 Nanoparticles Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-4-4 Abbas Khodabakhshi, Ayoub Riahi Farssani, Morteza Sedehi, Mehraban Sadeghi
Backgroundand Aim. Natural organic matter (NOM) has become one of the most serious environmental problems due to its persistence in aqueous solutions and the risk of carcinogenesis. In this study, the removal efficiencies of real and synthetic humic acid (HA) by multi-walled carbon nanotubes (MWCNTs) coated with iron oxide were evaluated. Materials and Methods. The MWCNs were synthesized and coated
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The Effects of a Sodium Carbonate Catalyst on Calorific Value, Flash Point, Cetane Index, and pH of Tire Pyrolysis Oil Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-3-21 Job Bosire Omwoyo, William Mengo
The large volume of tire waste generated globally poses a major waste disposal problem. In the natural environment, disposed of tires do not degrade easily, but they can be processed through pyrolysis, to get char, gas, and oil. In this study, tire pyrolysis was done using 0.00%, 1.50%, 2.50%, 5.00%, 7.50%, and 10.00% sodium carbonate catalyst in the feed material to produce oil. An evaluation of the
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A Mini Review on Flotation Techniques and Reagents Used in Graphite Beneficiation Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-3-21 N. Vasumathi, Anshuli Sarjekar, Hrishikesh Chandrayan, K. Chennakesavulu, G. Ramanjaneya Reddy, T. V. Vijaya Kumar, Nour Sh. El-Gendy, S. J. Gopalkrishna
Due to its numerous and major industrial uses, graphite is one of the significant carbon allotropes. Refractories and batteries are only a couple of the many uses for graphite. A growing market wants high-purity graphite with big flakes. Since there are fewer naturally occurring high-grade graphite ores, low-grade ores must be processed to increase their value to meet the rising demand, which is predicted
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Synthesis of Electrospun Polyvinyl Butyral/Bentonite Nanofiber Film for Cationic Dye Removal Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-3-15 Aiizat Ikhwan Abdul Jalil, Syahida Farhan Azha, Adrian Bonilla-Petriciolet, Mohammad Shahadat, Suzylawati Ismail
The textile industry is a common and relevant sector worldwide that generates significant environmental pollution via the discharge of dye-containing wastewater. In this direction, the electrospinning technology can be used to produce adsorbing nanofibers for the treatment of wastewater polluted by dyes and other toxic compounds. The nanofibers obtained by this technology are light and thin, thus providing
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Performance Improvement of OTEC-ORC and Turbine Based on Binary Zeotropic Working Fluid Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-3-8 Qingfen Ma, Jie Huang, Zezhou Gao, Hui Lu, Hongfeng Luo, Jingru Li, Zhongye Wu, Xin Feng
In this paper, the composition of binary nonazeotropic working fluids is explored from the perspective of improving OTEC-ORC efficiency, and the turbine is designed to accommodate with the working fluid. It is found that the OTEC-ORC using a R152a/R32 mixture as the working fluid is significantly higher than the OTEC-ORC thermal efficiency and system efficiency of the pure NH3, and the optimal composition
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Analysis of Bagasse Cellulose-Based Hydrogel for Methylene Blue Removal from Textile Industry Wastewater Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-3-7 Bayisa Dame Tesema, Tariku Ayala Chamada
The textile industry is one of the biggest water consumption production areas and its waste is essential to cause ecological contamination as they deliver questionable color, weighty metal, and degradable natural and inorganic results whenever arranged without treatment. The natural treatment strategy is not broadly drilled because of its intricate method. In the adsorption method, for example, actuated
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Regeneration Analysis of Bone Char Used in Water Defluoridation: Chemical Desorption Route, Surface Chemistry Analysis and Modeling Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-3-6 Herson Antonio González-Ponce, Didilia Ileana Mendoza-Castillo, Adrián Bonilla-Petriciolet, Hilda Elizabeth Reynel-Ávila, Karla Iveth Camacho-Aguilar
High concentrations of fluoride (F−) in drinking water represent a public health threat, and consequently, effective and sustainable methods are required to improve the water quality, mainly in developing and low-income countries. This study focused on the thermodynamics of fluoride adsorption on bone char regenerated with NaOH for water defluoridation. A detailed analysis of the number of fluoride
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3D Hollow Mg-Ca-Al Hydrotalcite-Like Compounds Doped with KF for Catalytic Transesterification Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-2-27 Wei Xu, Yan Lei, Mengting Zhang, Xueping Liu, Lihua Hu, Guomin Xiao, Lijing Gao
Herein, a kind of three-dimensional hollow Mg-Ca-Al hydrotalcite-like compounds (HTLCs) microsphere was prepared by self-assembly of hydrotalcite-like nanosheets. Mg-Ca-Al HTLCs microsphere (MS) has large specific surface area and large pore size, and the modification of KF·2H2O increases numerous alkaline active sites on the surface of the catalyst. The prepared catalyst has excellent catalytic effect
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Estimation of Acetic Acid Concentration from Biogas Samples Using Machine Learning Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-2-22 Lingga Aksara Putra, Bernhard Huber, Matthias Gaderer
In a biogas plant, the acetic acid concentration is a major component of the substrate as it determines the pH value, and this pH value correlates with the volume of biogas produced. Since it requires specialized laboratory equipment, the concentration of acetic acid in a biogas substrate cannot be measured on-line. The project aims to use NIR sensors and machine learning algorithms to estimate the
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Optimization of Keratin Hydrolysate Extraction from Tannery Sheep Hair Waste Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-2-22 Ashagrie Mengistu, Kenatu Angassa, Israel Tessema
Tannery hair wastes are becoming a challenge for tanners regarding environmental pollution control and human health. In this study, an experiment had been designed to hydrolyse sheep hair in an alkaline medium, and the operational condition for the alkaline extraction of KH has been modeled and optimized. The structure, morphology, functional groups, particle size, and molecular mass of the KH extracts
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Screening of Pure ILs and DESs for CO2 Separation, N2O Separation, and H2S Separation Processes Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-2-18 Yingying Zhang, Xuzhao Yang, Jingli Han, Junfeng Tian, Ting Zhang, Yakun Li, Jiangqiang Zhang, Yuxin Shi, Jingjing Zhang
Ionic liquids (ILs) are proposed as potential “green” solvents with remarkable properties. Deep eutectic solvents (DESs) are a new type of ILs with additional properties, such as higher biodegradability and a lower price. ILs and DESs are “green” absorbents for various gas separations, such as CO2/N2, CO2/H2/CO, H2S/CH4, and N2O/N2. Due to their large number, the screening of ILs is crucial. Although
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Simulation of Mass and Heat Transfer of Droplets Collision in a Flash Evaporation Pattern Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-2-10 Facheng Qiu, Xianming Zhang, Xinjie Chai, Yingying Dong, Xingjuan Xie, Zuohua Liu, Renlong Liu, Wensheng Li
The behavior of droplets collision in a flash evaporation ambient widely exists in various fields. In this work, the deformation analysis and thermal analysis models were established under the condition of flash via a computational fluid dynamics (CFD) method. First, the effects of initial temperature and collision velocity on heat and mass transfer during evaporation were considered. Then, the morphology
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Degradation of Metal Ions with Electricity Generation by Using Fruit Waste as an Organic Substrate in the Microbial Fuel Cell Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-2-6 Ghada Mohamed Aleid, Anoud Saud Alshammari, Asma D. Alomari, Shehu Sa’ad Abdullahi, Rania Edrees Adam Mohammad, Rokhsana Mohammed Ismail Abdulrahman
A potential and developing green technology for producing renewable energy and treating wastewater is the microbial fuel cell (MFC). Despite several advancements, there are still several serious problems with this approach. In the present work, we addressed the problem of the organic substrate in MFC, which is necessary for the degradation of metal ions in conjunction with the production of energy
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Synthesis of Micromesoporous Zeolite-Alumina Catalysts for Olefin Production from Heavy Crude Oil Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-1-31 M. Al-Samhan, J. Al-Fadhli, A. M. Al-Otaibi, R. Bouresli
Maximizing the production of high-value olefins from heavy crude oil is a crucial topic in the downstream refining industry. However, converting heavier fractions is a major challenge due to the small pore size of the zeolites. Therefore, this work aimed to develop extrudate zeolite catalysts posing adequate micromesoporous pore network and moderate acidity by combining microporous zeolite with the
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Influence of Gas from Long-Flame Coal Spontaneous Combustion on Gas Explosion Limit Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-1-24 Haitao Wang, Yongli Liu, Qiyuan Shan
To investigate the impact of multiple combustible gases produced by long-flame coal spontaneous combustion on the gas explosion limit and to guide the reoperation of the coal mine goaf and fire area, the influence of gas generated by coal spontaneous combustion on gas explosion limit is investigated in this paper using a temperature-programmed device and a 20 L spherical explosion device. The results
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The Production of Industrial-Grade Oxygen from Air by Pressure Swing Adsorption Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-1-19 Cynthia Chin, Zykamilia Kamin, Mohd Hardyianto Vai Bahrun, Awang Bono
Oxygen, an odorless and colorless gas constituent of the atmosphere, is a vital gas component for the Earth, as it makes up 21% of the composition of the air we breathe. Apart from the importance of oxygen for human breathing, its highly pure form is demanding for industrial applications. As such, several technologies have been established to increase the oxygen purity from 21% to somewhat higher than
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Application of Artificial Intelligent Approach to Predict the Normal Boiling Point of Refrigerants Int. J. Chem. Eng. (IF 2.7) Pub Date : 2023-1-2 Bo Liu, Maryam Karimi Nouroddin
Due to the desirable and interesting applications of refrigerants in organic Rankine cycles, heat pumps, and refrigeration, engineers and researchers are becoming more interested in refrigerant properties. One of the most dominant thermophysical properties of these fluids is their normal boiling point (Tb). In the current study, a novel extreme learning method (ELM) and ensemble decision tree boosted
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Modified t-Distribution Stochastic Neighbor Embedding Using Augmented Kernel Mahalanobis-Distance for Dynamic Multimode Chemical Process Monitoring Int. J. Chem. Eng. (IF 2.7) Pub Date : 2022-12-29 Haoyu Gu, Li Wang
The traditional data-driven process monitoring methods may not be applicable for the system which has dynamic and multimode characteristics. In this paper, a novel scheme named modified t-distribution stochastic neighbor embedding using augmented Mahalanobis-distance for dynamic multimode chemical process monitoring (AKMD-t-SNE) is proposed to realize dynamic multimodal process monitoring. First, the
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Bioremediation of Polycyclic Aromatic Hydrocarbons in Contaminated Soils Using Vermicompost Int. J. Chem. Eng. (IF 2.7) Pub Date : 2022-12-22 Fazel Mohammadi-Moghadam, Ramazan Khodadadi, Morteza Sedehi, Mohsen Arbabi
Bioremediation of polycyclic aromatic hydrocarbons (PAHs) in contaminated soils are reported in many literatures. Composting, in addition to bioremediation, can simultaneously increase soil organic matter content and soil fertility and is thus regarded as one of the most cost-effective methods of soil remediation. In this study, biodegradation of phenanthrene (PHE) and pyrene (PYR) is reported by microbial
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Investigation of the Characteristics of a Gas Turbine Combustion Chamber with Steam Injection Operating on Hydrogen-Containing Mixtures and Hydrogen Int. J. Chem. Eng. (IF 2.7) Pub Date : 2022-12-17 Serhiy Serbin, Kateryna Burunsuz, Daifen Chen
The article is devoted to the investigation of the characteristics of a gas turbine combustion chamber with a steam injection when operating on hydrogen-containing mixtures and pure hydrogen. The parameters of a cannular combustion chamber with a separate injection of ecological and energy steam were studied to ensure the stable and ecologically clean chamber’s operation without the formation of flashback
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Dry Reforming of Methane with Mesoporous Ni/ZrO2 Catalyst Int. J. Chem. Eng. (IF 2.7) Pub Date : 2022-12-16 Subhan Azeem, Rabya Aslam, Mahmood Saleem
Dry reforming of methane has exhibited significant environmental benefits as it utilizes two major greenhouse gases (CO2 and CH4) to produce synthesis gas, a major building block for hydrocarbons. This process has gained industrial attention as catalyst deactivation due to coke deposition being a major hindrance. The present study focuses on the dry reforming of methane over Ni-supported mesoporous
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Volute Optimization Based on Self-Adaption Kriging Surrogate Model Int. J. Chem. Eng. (IF 2.7) Pub Date : 2022-12-1 Fannian Meng, Ziqi Zhang, Liangwen Wang
Optimizing the volute performance can effectively improve the efficiency of a centrifugal fan by changing the volute geometric parameter, so the self-adaption Kriging surrogate model is used to optimize the volute geometric parameter. Firstly, volute radius Rd, the radius of tongue r, and outlet angle of the volute θ are selected as the optimization parameters of the volute, and latin hypercube sampling
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Influence of Injection Pressure on the Dual-Fuel Mode in CI Engines Fueled with Blends of Ethanol and Tamanu Biodiesel Int. J. Chem. Eng. (IF 2.7) Pub Date : 2022-11-28 M. Parthasarathy, P. V. Elumalai, M. Murunachippan, P. B. Senthilkumar, Saboor Shaik, Mohsen Sharifpur, Nima Khalilpoor
The acceleration of global warming is primarily attributable to nonrenewable energy sources such as conventional fossil fuels. The primary source of energy for the automobile sector is petroleum products. Petroleum fuel is depleting daily, and its use produces a significant amount of greenhouse emissions. Biofuels would be a viable alternative to petroleum fuels, but a redesign of the engine would
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Local Resistances of Gas–Liquid Two-Phase Flows in Vertical L-Shaped and Z-Shaped Pipes Int. J. Chem. Eng. (IF 2.7) Pub Date : 2022-11-28 Bing Wang, Shan-qun Chen, Bin Liao
In this paper, a systematic numerical study of the local resistance coefficients of vertical L-shaped and Z-shaped pipes for gas‒liquid two-phase flows under vertical conditions was carried out using a realizable k-ε turbulence model combined with a mixture model in Fluent software. Specifically, the influence of the Reynolds number Rel, the gas-phase volume rate α, the radius–diameter ratio R/D, the
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Fault Diagnosis and Prediction of Continuous Industrial Processes Based on Hidden Markov Model-Bayesian Network Hybrid Model Int. J. Chem. Eng. (IF 2.7) Pub Date : 2022-11-18 Jiarula Yasenjiang, Chenxing Xu, Shengpeng Zhang, Xin Zhang
Hidden Markov models (HMMs) have been recently used for fault detection and prediction in continuous industrial processes; however, the expected maximum (EM) algorithm in the HMM has local optimality problems and cannot accurately find the fault root cause variables in complex industrial processes with high-dimensional data and strong variable coupling. To alleviate this problem, a hidden Markov model-Bayesian
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Comparative Study on Combustion and Flame Characteristics of Laminar Methane/Air and N-Butane/Air Flames in a Micro-Slot Burner Int. J. Chem. Eng. (IF 2.7) Pub Date : 2022-11-15 Soroush Sheykhbaglou, Seyed Mostafa Robati
Combustion and flame characteristics of laminar methane/air and n-butane/air flames in a 3D-printed micro-slot burner is compared and reported in this study. The stability limit, flame appearance, and emission performance are investigated experimentally. In addition, past research on conventional burners is compared with the results of this study throughout the paper. The construction of this micro-slot