Ali Kargari | AmirKabir University Of Technology & Steinbeis University of Berlin (original) (raw)

Papers by Ali Kargari

Research paper thumbnail of One-Pot Synthesis of Inorganic-Organic Hybrid Ionogel Membrane for Propylene/Propane Separation Via Olefin-Facilitated Transport

Social Science Research Network, 2022

Research paper thumbnail of Membrane Materials in Proton Exchange Membrane Fuel Cells (PEMFCs)

Research paper thumbnail of Green solvents for municipality water treatment

Research paper thumbnail of Optimum chain desalination process design for treatment of high TDS brine: A case assessment for future treatment of extracted brine from shenhua CO <sub>2</sub> storage site

Greenhouse Gases-Science and Technology, May 11, 2023

Carbon dioxide‐enhanced water recovery (CO2‐EWR) is a promising strategy for managing reservoir p... more Carbon dioxide‐enhanced water recovery (CO2‐EWR) is a promising strategy for managing reservoir pressure build‐up and mitigating the risk of fault activation resulting from CO2 injection in deep saline aquifers. CO2‐EWR can also be employed for supplying the required water for different applications after a treatment stage for the produced saline water. In this study, a brief review on CO2‐EWR technology and its necessities are first carried out. After that, the feasibilities, advantages, and challenges of various available treatment technologies that can potentially be used to treat high total dissolved solids (TDS) brine are comprehensively assessed. Based on comprehensive evaluation on technologies, a chain desalination process, consisting of pretreatment, main treatment, and post treatment, is proposed as a strategic path for the treatment of high TDS brine extracted from the Shenhua CCS site. It is concluded that coagulation‐flocculation and gravity filtration are needed as primary stages to remove suspended particles, while membrane distillation (MD) is selected as a suitable main treatment technology for high TDS Shenhua brine. Then, MD treatment is comprehensively discussed for a small‐scale treatment of extracted Shenhua brine assuming that the pretreated brine is free of suspended solids. After presenting the heat and mass transfer equations for direct contact membrane distillation (DCMD), a mathematical thermodynamic model is programmed in EES (Engineering Equation Solver) software to briefly analyze the performance parameters of DCMD. The results indicate that the designed DCMD, in the absence of auxiliary systems and considering the inherent temperature of extracted brine from different formations, has the capability of producing 15.1 kg m−2hr of freshwater from the extracted brine of the Shihezi formation layer. In the case of employing the auxiliary system of flat‐plate collector (FPC) combined with heat exchanger (HX) to heat up the extracted Shenhua brine to the desired temperature of 80°C, the amounts of produced flux are enhanced by 133%, 72%, and 45% for the brine extracted from Liujiagou, Shiqianfeng, and Shihezi formations, respectively. Using the yearly solar radiation model in TRNSYS software, the maximum solar radiation on the tilted surface at the location of Shenhua project in Inner Mongolia Autonomous Region of China reaches 3800 kJ m−2hr at 1 PM on April 1. Considering maximum solar radiation on the tilted surface, it is proved that a small‐surface FPC can supply the required energy to heat up the extracted brine from its inherent temperature to the desired temperature of 80°C. © 2023 Society of Chemical Industry and John Wiley &amp; Sons, Ltd.

Research paper thumbnail of Prediction of Drug Toxicity Through Machine Learning

Research paper thumbnail of 二層統合皮膚ポリエーテルイミドのナノろ過膜の作製条件の最適化【JST・京大機械翻訳】

Journal of water process engineering, 2020

Research paper thumbnail of Application of membrane separation processes in petrochemical industry: a review

Desalination, 2009

In this paper a general review on different membrane processes and membrane reactors was done. As... more In this paper a general review on different membrane processes and membrane reactors was done. As the main aim of this paper is to review the application of membrane processes in petrochemical industry, processes such as olefin/paraffin separation, light solvent separation, solvent dewaxing, phenol and aromatic recovery, dehydrogenation, oxidative coupling of methane and steam reforming of methane were discussed in detail. Besides, separation using polymer-inorganic nano composite membranes and wastewater treatment using membrane bio-reactors were reviewed.

Research paper thumbnail of Electrospun and nanofibrous membranes for membrane distillation

Research paper thumbnail of Water-In-oil Emulsion Liquid Membrane Transport of L-Cysteine

Separation Science and Technology, 2013

Transport of L-cysteine (L-cys) from potassium chloride solutions through emulsion liquid membran... more Transport of L-cysteine (L-cys) from potassium chloride solutions through emulsion liquid membranes containing dicyclohexyl-18-crown-6 (CE) has been investigated. The mechanism of transport is based on ion-pair formation between [K·CE] complex and L-cys. The effect of parameters influencing the process i.e., pH of the external phase, carrier concentration, receiving phase concentration, emulsification and stirring speed were examined and discussed. The highest performance for transport of L-cysteine (1 × 10 M) was achieved by adjusting the ionic strength of the feed phase at 0.01 M and pH 10 (KCl/KOH mixture). The membrane was prepared by emulsification (at 11000 rpm) of the mixture of crown ether (6 × 10 M), 4% emulsifier (ECA-4360) and liquid paraffin. The optimized organic to aqueous volume ratio of the emulsion globules and treat ratio was found to be 1:3 and 0.1, respectively. Hydrochloric acid solution (2 M) was used as stripping phase. The extraction step was completed after 30 min. by stirring the phases (700 rpm). The process shows an excellent selectivity towards L-cysteine with respect to amino acids L-tryptophan, L-tyrosine, L-leucine, L-methionine, L-arginine, L-asparagine, L-aspartic acid, L-glycine, L-serine and L-threonine. UV-Vis. Spectroscopy and TLC method using ninhydrin, as indicator, were used for amino acids analysis.

Research paper thumbnail of Experimental measurement and thermodynamic modeling of propylene and propane solubility in N-methyl pyrrolidone (NMP)

Fluid Phase Equilibria, Feb 1, 2015

Abstract In this study, the absorption performance of N-methyl pyrrolidone (NMP) was evaluated in... more Abstract In this study, the absorption performance of N-methyl pyrrolidone (NMP) was evaluated in propylene/propane separation. The kinetic and equilibrium data were obtained for pure gas absorption at different temperatures (276.1, 293.1, and 328.1 K) and various pressures (up to their dew points). It was shown that the selectivity for propylene/propane absorption at different conditions was less than 2.0, and it was nearly independent of pressure and temperature. The solubility was also calculated using 1-parameter and 2-parameter Peng–Robinson EOS by adjusting the binary interaction parameters kij and lij. The results demonstrated that relatively large values of kij (between 0.1 and 0.15 in 1-parameter model) regressed from the experimental data. It is predictable according to the dissimilar chemical structures of the solvent/solutes. It was also concluded that if the accurate values of kij have not been implemented in process simulators, the prediction of solubility data by using EOS could produce large errors of about 600% and 250% for propane/NMP and propylene/NMP, respectively. Furthermore, the presence of lij has a minor effect on the prediction of solubility data.

Research paper thumbnail of State-of-the-art modification of polymeric membranes by PEO and PEG for carbon dioxide separation: A review of the current status and future perspectives

Journal of Industrial and Engineering Chemistry, Apr 1, 2020

Abstract In this paper, the methods for modification of polymeric membranes with Poly (ethylene o... more Abstract In this paper, the methods for modification of polymeric membranes with Poly (ethylene oxide) (PEO) and Poly (ethylene glycol) (PEG) for CO2 separation is reviewed. PEO-containing membranes considered due to their proper CO2 separation performances and simplicity in fabrication. However, high crystallization tendency and mechanical strength of these PEG-based membranes have limited their applications on commercial scale. Hence, various methods have been proposed to overcome these shortcomings and improve the performance of the membranes, such as blending with other polymers or the formation of new chemical structures by copolymerization and crosslinking. In this paper, the state-of-the-art for the polymeric membranes containing PEO or PEG for CO2 separation is investigated and the separation performance of each category is evaluated and finally, future research directions and recommendations in this field are proposed. According to the present study, in general, although the mixed matrix membranes have shown excellent performances for carbon dioxide separations, the ionic liquid containing membranes also have offered high permeability and selectivity than the other types of membranes, and it seems that the MMMs containing ILs would be promising for future generation membranes.

Research paper thumbnail of Bio-based nonporous membranes: Evolution and benchmarking review

Journal of Industrial and Engineering Chemistry, Aug 1, 2023

Research paper thumbnail of Plant-derived solvents: Production and purification

Research paper thumbnail of Modeling and Application of UF-Stirred Cell Reactors in Hydrolysis of Saccharides

Chemical Engineering & Technology, Nov 1, 1999

ABSTRACT Hydrolysis of sucrose by invertase as a typical example of saccharides enzymatic hydroly... more ABSTRACT Hydrolysis of sucrose by invertase as a typical example of saccharides enzymatic hydrolysis has been conducted in a UF-stirred cell reactor. A model has been derived by which the effect of some pertinent variables, such as membrane pore size, applied pressure, substrate concentration and stirring speed, on the performance capability of such systems may be predicted. A close correlation has been found between the experimental results obtained under a wide range of operating conditions and those calculated from the model.

Research paper thumbnail of Application of artificial neural network for prediction of halogenated refrigerants vapor pressure

Research paper thumbnail of Production of high-quality drinking water from chillers and air conditioning units’ condensates using UV/GAC/MF/NF hybrid system

Journal of Cleaner Production, Sep 1, 2022

Research paper thumbnail of Novel Triple-Layer HIPS/SBR/PP Nanofibrous Membranes for Robust DCMD Desalination

Industrial & Engineering Chemistry Research, Feb 8, 2021

In this work, a novel method for the fabrication of robust triple-layer membranes composed of nan... more In this work, a novel method for the fabrication of robust triple-layer membranes composed of nanofibrous high-impact polystyrene (HIPS) as the top layer, commercial fibrous polypropylene (C-PP) as...

Research paper thumbnail of CFD simulation and optimization of an energy-efficient direct contact membrane distillation (DCMD) desalination system

Chemical Engineering Research and Design

Research paper thumbnail of Hypersaline drilling mud water treatment using pretreatment-free DCMD process

Research paper thumbnail of Process intensification through magnetic treatment of seawater for production of drinking water by membrane distillation process: A novel approach for commercialization membrane distillation process

Chemical Engineering and Processing - Process Intensification, 2021

Abstract In this study, a novel method for intensification of drinking water production from seaw... more Abstract In this study, a novel method for intensification of drinking water production from seawater in a membrane distillation system is introduced. For this purpose, the feed water was passed through an intensive magnetic field and then introduced to the membrane module. The experiments were carried out for 80 hours at different feed temperatures and flow rates, and different magnetic field intensities to ensure the effectiveness of the method. The best location for applying the magnetic field was determined, experimentally. In the absence of the magnetic field, a flux decline of about 50% was observed during 80 hours of operation, while by applying three pairs of magnets, a 20% increase in the permeate flux and 72% decrease in the product TDS was observed. By increasing the magnetic field intensity, the size and the amount of the scale particles formed in the bulk solution increased but the analysis revealed that the scale build-up on the membrane surface was decreased upon applying the magnetic field. The process was optimized by the RSM method for obtaining the operating condition for attaining the best performance of the membrane system. At this optimum condition, an average permeate flux of 3.06 L/m2.h was obtained.

Research paper thumbnail of One-Pot Synthesis of Inorganic-Organic Hybrid Ionogel Membrane for Propylene/Propane Separation Via Olefin-Facilitated Transport

Social Science Research Network, 2022

Research paper thumbnail of Membrane Materials in Proton Exchange Membrane Fuel Cells (PEMFCs)

Research paper thumbnail of Green solvents for municipality water treatment

Research paper thumbnail of Optimum chain desalination process design for treatment of high TDS brine: A case assessment for future treatment of extracted brine from shenhua CO <sub>2</sub> storage site

Greenhouse Gases-Science and Technology, May 11, 2023

Carbon dioxide‐enhanced water recovery (CO2‐EWR) is a promising strategy for managing reservoir p... more Carbon dioxide‐enhanced water recovery (CO2‐EWR) is a promising strategy for managing reservoir pressure build‐up and mitigating the risk of fault activation resulting from CO2 injection in deep saline aquifers. CO2‐EWR can also be employed for supplying the required water for different applications after a treatment stage for the produced saline water. In this study, a brief review on CO2‐EWR technology and its necessities are first carried out. After that, the feasibilities, advantages, and challenges of various available treatment technologies that can potentially be used to treat high total dissolved solids (TDS) brine are comprehensively assessed. Based on comprehensive evaluation on technologies, a chain desalination process, consisting of pretreatment, main treatment, and post treatment, is proposed as a strategic path for the treatment of high TDS brine extracted from the Shenhua CCS site. It is concluded that coagulation‐flocculation and gravity filtration are needed as primary stages to remove suspended particles, while membrane distillation (MD) is selected as a suitable main treatment technology for high TDS Shenhua brine. Then, MD treatment is comprehensively discussed for a small‐scale treatment of extracted Shenhua brine assuming that the pretreated brine is free of suspended solids. After presenting the heat and mass transfer equations for direct contact membrane distillation (DCMD), a mathematical thermodynamic model is programmed in EES (Engineering Equation Solver) software to briefly analyze the performance parameters of DCMD. The results indicate that the designed DCMD, in the absence of auxiliary systems and considering the inherent temperature of extracted brine from different formations, has the capability of producing 15.1 kg m−2hr of freshwater from the extracted brine of the Shihezi formation layer. In the case of employing the auxiliary system of flat‐plate collector (FPC) combined with heat exchanger (HX) to heat up the extracted Shenhua brine to the desired temperature of 80°C, the amounts of produced flux are enhanced by 133%, 72%, and 45% for the brine extracted from Liujiagou, Shiqianfeng, and Shihezi formations, respectively. Using the yearly solar radiation model in TRNSYS software, the maximum solar radiation on the tilted surface at the location of Shenhua project in Inner Mongolia Autonomous Region of China reaches 3800 kJ m−2hr at 1 PM on April 1. Considering maximum solar radiation on the tilted surface, it is proved that a small‐surface FPC can supply the required energy to heat up the extracted brine from its inherent temperature to the desired temperature of 80°C. © 2023 Society of Chemical Industry and John Wiley &amp; Sons, Ltd.

Research paper thumbnail of Prediction of Drug Toxicity Through Machine Learning

Research paper thumbnail of 二層統合皮膚ポリエーテルイミドのナノろ過膜の作製条件の最適化【JST・京大機械翻訳】

Journal of water process engineering, 2020

Research paper thumbnail of Application of membrane separation processes in petrochemical industry: a review

Desalination, 2009

In this paper a general review on different membrane processes and membrane reactors was done. As... more In this paper a general review on different membrane processes and membrane reactors was done. As the main aim of this paper is to review the application of membrane processes in petrochemical industry, processes such as olefin/paraffin separation, light solvent separation, solvent dewaxing, phenol and aromatic recovery, dehydrogenation, oxidative coupling of methane and steam reforming of methane were discussed in detail. Besides, separation using polymer-inorganic nano composite membranes and wastewater treatment using membrane bio-reactors were reviewed.

Research paper thumbnail of Electrospun and nanofibrous membranes for membrane distillation

Research paper thumbnail of Water-In-oil Emulsion Liquid Membrane Transport of L-Cysteine

Separation Science and Technology, 2013

Transport of L-cysteine (L-cys) from potassium chloride solutions through emulsion liquid membran... more Transport of L-cysteine (L-cys) from potassium chloride solutions through emulsion liquid membranes containing dicyclohexyl-18-crown-6 (CE) has been investigated. The mechanism of transport is based on ion-pair formation between [K·CE] complex and L-cys. The effect of parameters influencing the process i.e., pH of the external phase, carrier concentration, receiving phase concentration, emulsification and stirring speed were examined and discussed. The highest performance for transport of L-cysteine (1 × 10 M) was achieved by adjusting the ionic strength of the feed phase at 0.01 M and pH 10 (KCl/KOH mixture). The membrane was prepared by emulsification (at 11000 rpm) of the mixture of crown ether (6 × 10 M), 4% emulsifier (ECA-4360) and liquid paraffin. The optimized organic to aqueous volume ratio of the emulsion globules and treat ratio was found to be 1:3 and 0.1, respectively. Hydrochloric acid solution (2 M) was used as stripping phase. The extraction step was completed after 30 min. by stirring the phases (700 rpm). The process shows an excellent selectivity towards L-cysteine with respect to amino acids L-tryptophan, L-tyrosine, L-leucine, L-methionine, L-arginine, L-asparagine, L-aspartic acid, L-glycine, L-serine and L-threonine. UV-Vis. Spectroscopy and TLC method using ninhydrin, as indicator, were used for amino acids analysis.

Research paper thumbnail of Experimental measurement and thermodynamic modeling of propylene and propane solubility in N-methyl pyrrolidone (NMP)

Fluid Phase Equilibria, Feb 1, 2015

Abstract In this study, the absorption performance of N-methyl pyrrolidone (NMP) was evaluated in... more Abstract In this study, the absorption performance of N-methyl pyrrolidone (NMP) was evaluated in propylene/propane separation. The kinetic and equilibrium data were obtained for pure gas absorption at different temperatures (276.1, 293.1, and 328.1 K) and various pressures (up to their dew points). It was shown that the selectivity for propylene/propane absorption at different conditions was less than 2.0, and it was nearly independent of pressure and temperature. The solubility was also calculated using 1-parameter and 2-parameter Peng–Robinson EOS by adjusting the binary interaction parameters kij and lij. The results demonstrated that relatively large values of kij (between 0.1 and 0.15 in 1-parameter model) regressed from the experimental data. It is predictable according to the dissimilar chemical structures of the solvent/solutes. It was also concluded that if the accurate values of kij have not been implemented in process simulators, the prediction of solubility data by using EOS could produce large errors of about 600% and 250% for propane/NMP and propylene/NMP, respectively. Furthermore, the presence of lij has a minor effect on the prediction of solubility data.

Research paper thumbnail of State-of-the-art modification of polymeric membranes by PEO and PEG for carbon dioxide separation: A review of the current status and future perspectives

Journal of Industrial and Engineering Chemistry, Apr 1, 2020

Abstract In this paper, the methods for modification of polymeric membranes with Poly (ethylene o... more Abstract In this paper, the methods for modification of polymeric membranes with Poly (ethylene oxide) (PEO) and Poly (ethylene glycol) (PEG) for CO2 separation is reviewed. PEO-containing membranes considered due to their proper CO2 separation performances and simplicity in fabrication. However, high crystallization tendency and mechanical strength of these PEG-based membranes have limited their applications on commercial scale. Hence, various methods have been proposed to overcome these shortcomings and improve the performance of the membranes, such as blending with other polymers or the formation of new chemical structures by copolymerization and crosslinking. In this paper, the state-of-the-art for the polymeric membranes containing PEO or PEG for CO2 separation is investigated and the separation performance of each category is evaluated and finally, future research directions and recommendations in this field are proposed. According to the present study, in general, although the mixed matrix membranes have shown excellent performances for carbon dioxide separations, the ionic liquid containing membranes also have offered high permeability and selectivity than the other types of membranes, and it seems that the MMMs containing ILs would be promising for future generation membranes.

Research paper thumbnail of Bio-based nonporous membranes: Evolution and benchmarking review

Journal of Industrial and Engineering Chemistry, Aug 1, 2023

Research paper thumbnail of Plant-derived solvents: Production and purification

Research paper thumbnail of Modeling and Application of UF-Stirred Cell Reactors in Hydrolysis of Saccharides

Chemical Engineering & Technology, Nov 1, 1999

ABSTRACT Hydrolysis of sucrose by invertase as a typical example of saccharides enzymatic hydroly... more ABSTRACT Hydrolysis of sucrose by invertase as a typical example of saccharides enzymatic hydrolysis has been conducted in a UF-stirred cell reactor. A model has been derived by which the effect of some pertinent variables, such as membrane pore size, applied pressure, substrate concentration and stirring speed, on the performance capability of such systems may be predicted. A close correlation has been found between the experimental results obtained under a wide range of operating conditions and those calculated from the model.

Research paper thumbnail of Application of artificial neural network for prediction of halogenated refrigerants vapor pressure

Research paper thumbnail of Production of high-quality drinking water from chillers and air conditioning units’ condensates using UV/GAC/MF/NF hybrid system

Journal of Cleaner Production, Sep 1, 2022

Research paper thumbnail of Novel Triple-Layer HIPS/SBR/PP Nanofibrous Membranes for Robust DCMD Desalination

Industrial & Engineering Chemistry Research, Feb 8, 2021

In this work, a novel method for the fabrication of robust triple-layer membranes composed of nan... more In this work, a novel method for the fabrication of robust triple-layer membranes composed of nanofibrous high-impact polystyrene (HIPS) as the top layer, commercial fibrous polypropylene (C-PP) as...

Research paper thumbnail of CFD simulation and optimization of an energy-efficient direct contact membrane distillation (DCMD) desalination system

Chemical Engineering Research and Design

Research paper thumbnail of Hypersaline drilling mud water treatment using pretreatment-free DCMD process

Research paper thumbnail of Process intensification through magnetic treatment of seawater for production of drinking water by membrane distillation process: A novel approach for commercialization membrane distillation process

Chemical Engineering and Processing - Process Intensification, 2021

Abstract In this study, a novel method for intensification of drinking water production from seaw... more Abstract In this study, a novel method for intensification of drinking water production from seawater in a membrane distillation system is introduced. For this purpose, the feed water was passed through an intensive magnetic field and then introduced to the membrane module. The experiments were carried out for 80 hours at different feed temperatures and flow rates, and different magnetic field intensities to ensure the effectiveness of the method. The best location for applying the magnetic field was determined, experimentally. In the absence of the magnetic field, a flux decline of about 50% was observed during 80 hours of operation, while by applying three pairs of magnets, a 20% increase in the permeate flux and 72% decrease in the product TDS was observed. By increasing the magnetic field intensity, the size and the amount of the scale particles formed in the bulk solution increased but the analysis revealed that the scale build-up on the membrane surface was decreased upon applying the magnetic field. The process was optimized by the RSM method for obtaining the operating condition for attaining the best performance of the membrane system. At this optimum condition, an average permeate flux of 3.06 L/m2.h was obtained.