Pub Date : 2020-07-01DOI: 10.22079/JMSR.2020.117983.1312
Hassan Younas, Z. Afridi, Yuenan Zhou, Z. Cui
Membrane filtration, especially based on the size exclusion phenomenon, has long been established due to its abilities to addressing the growing demands of the clean water of the world’s population. However, widespread applications of the membranes face several challenges including chemical vulnerability, thermal deterioration, and biological degradation of the membranes that transpire while recovering the membrane flux after fouling. Therefore, developing antifouling membranes for water treatment purposes immensely increased in the past few years and inorganic nanoparticles played a significant role in this era. By considering the great potential of nanoparticles in the field of developing robust and small foot-print membranes, this study reviews the application of nanoparticles in pressure driven flat-sheet membranes and their impact on membrane characteristics and performance. It has been demonstrated that the application of nanoparticles has greatly improved the water permeability and antifouling potential of the membrane without compromising the selectivity of the membranes.
{"title":"Progress and Perspective of Antifouling, Pressure Driven, Flat-Sheet Nanocomposite, Polymeric Membranes in Water Treatment","authors":"Hassan Younas, Z. Afridi, Yuenan Zhou, Z. Cui","doi":"10.22079/JMSR.2020.117983.1312","DOIUrl":"https://doi.org/10.22079/JMSR.2020.117983.1312","url":null,"abstract":"Membrane filtration, especially based on the size exclusion phenomenon, has long been established due to its abilities to addressing the growing demands of the clean water of the world’s population. However, widespread applications of the membranes face several challenges including chemical vulnerability, thermal deterioration, and biological degradation of the membranes that transpire while recovering the membrane flux after fouling. Therefore, developing antifouling membranes for water treatment purposes immensely increased in the past few years and inorganic nanoparticles played a significant role in this era. By considering the great potential of nanoparticles in the field of developing robust and small foot-print membranes, this study reviews the application of nanoparticles in pressure driven flat-sheet membranes and their impact on membrane characteristics and performance. It has been demonstrated that the application of nanoparticles has greatly improved the water permeability and antifouling potential of the membrane without compromising the selectivity of the membranes.","PeriodicalId":16427,"journal":{"name":"Journal of Membrane Science and Research","volume":"6 1","pages":"319-332"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44578196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.22079/JMSR.2019.108451.1265
M. Frappa, F. Macedonio, E. Drioli
Together with the supply of energy and the environmental protection, fresh water is one of the three keys elements for the sustainable development of every society. Where the availability of water cannot be carried out by using conventional sources, unavoidable appears the resort of the major water source: the sea. Today, RO is one the most used membrane processes for the production of fresh water from seawater and brackish water, reclamation of wastewater and the treatment of various industrial wastewaters. Further improvements can be achieved via the integration of reverse osmosis with other membrane operations, such as membrane distillation and membrane crystallization. The integrated system can lead to important benefits in terms of product quality, compactness of the system, environmental impact and energy consumption. In this work, first a brief introduction to RO process and recent developments will be given. Then, the status and development of membrane distillation and membrane crystallization will be illustrated. Finally, membrane condenser (i.e., another innovative membrane process for water recovery and reuse based on the use of porous hydrophobic membranes) will be described.
{"title":"Progress of Membrane Engineering for Water Treatment","authors":"M. Frappa, F. Macedonio, E. Drioli","doi":"10.22079/JMSR.2019.108451.1265","DOIUrl":"https://doi.org/10.22079/JMSR.2019.108451.1265","url":null,"abstract":"Together with the supply of energy and the environmental protection, fresh water is one of the three keys elements for the sustainable development of every society. Where the availability of water cannot be carried out by using conventional sources, unavoidable appears the resort of the major water source: the sea. Today, RO is one the most used membrane processes for the production of fresh water from seawater and brackish water, reclamation of wastewater and the treatment of various industrial wastewaters. Further improvements can be achieved via the integration of reverse osmosis with other membrane operations, such as membrane distillation and membrane crystallization. The integrated system can lead to important benefits in terms of product quality, compactness of the system, environmental impact and energy consumption. In this work, first a brief introduction to RO process and recent developments will be given. Then, the status and development of membrane distillation and membrane crystallization will be illustrated. Finally, membrane condenser (i.e., another innovative membrane process for water recovery and reuse based on the use of porous hydrophobic membranes) will be described.","PeriodicalId":16427,"journal":{"name":"Journal of Membrane Science and Research","volume":"6 1","pages":"269-279"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48236926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.22079/JMSR.2020.124256.1366
P. Zito, A. Brunetti, G. Barbieri
In this work, the main aspects regarding the permeation of mixtures containing CO2 and permanent gases such as H2 , N2 and CH4 through zeolite membranes have been investigated, focusing on the description of the mass transport mechanisms taking place inside the pores. First, a brief overview about the performance of the main zeolite membranes used in gas separation (e.g. DDR, CHA, AEI, FAU, etc.) was provided, which was expressed in terms of permeability and selectivity of CO2 /CH4 , CO2 /H2 and CO2 /H2 mixtures. The core of this work is an overview of the mass transport through the zeolite pores, with particular attention to the last achievement given by the modelling approach. Moreover, the permeation of binary mixtures has been analyzed; specifically, the effect of temperature, feed pressure and mixture composition on permeance and selectivity has been investigated. The increment of temperature and feed pressure negatively affects the separation performance of zeolite membranes, reducing both CO2 permeance and selectivity. Moreover, the increment of CO2 permeance observed in mixture, paired to the reduction of that of H2 , N2 and CH4 , provides an important improvement in membrane selectivity (e.g., 6 times for CO2 /H2 in SAPO34). Thus, the knowledge of the appropriate operating conditions to be set, associated to the improvements in membrane reproducibility and fabrication cost, will allow to extend the applications of zeolite membranes on industrial scale.
{"title":"Selective Mass Transport of CO2 Containing Mixtures through Zeolite Membranes","authors":"P. Zito, A. Brunetti, G. Barbieri","doi":"10.22079/JMSR.2020.124256.1366","DOIUrl":"https://doi.org/10.22079/JMSR.2020.124256.1366","url":null,"abstract":"In this work, the main aspects regarding the permeation of mixtures containing CO2 and permanent gases such as H2 , N2 and CH4 through zeolite membranes have been investigated, focusing on the description of the mass transport mechanisms taking place inside the pores. First, a brief overview about the performance of the main zeolite membranes used in gas separation (e.g. DDR, CHA, AEI, FAU, etc.) was provided, which was expressed in terms of permeability and selectivity of CO2 /CH4 , CO2 /H2 and CO2 /H2 mixtures. The core of this work is an overview of the mass transport through the zeolite pores, with particular attention to the last achievement given by the modelling approach. Moreover, the permeation of binary mixtures has been analyzed; specifically, the effect of temperature, feed pressure and mixture composition on permeance and selectivity has been investigated. The increment of temperature and feed pressure negatively affects the separation performance of zeolite membranes, reducing both CO2 permeance and selectivity. Moreover, the increment of CO2 permeance observed in mixture, paired to the reduction of that of H2 , N2 and CH4 , provides an important improvement in membrane selectivity (e.g., 6 times for CO2 /H2 in SAPO34). Thus, the knowledge of the appropriate operating conditions to be set, associated to the improvements in membrane reproducibility and fabrication cost, will allow to extend the applications of zeolite membranes on industrial scale.","PeriodicalId":16427,"journal":{"name":"Journal of Membrane Science and Research","volume":"6 1","pages":"333-343"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43450508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.22079/JMSR.2019.110529.1270
Widda Rahmah, A. K. Wardani, G. Lugito, I. Wenten
Deep seawater is a valuable renewable resource. Due to its outstanding characteristics (i.e., clean, nutrient-rich and cold), deep seawater has been utilized in various subjects, such as mariculture, agriculture, food and beverage, pharmaceutical, medical, and renewable energy. As a result, deep seawater utilization cannot be separated from membrane technologies. Reverse osmosis has become the most common desalination process to prepare deep-sea drinking water with microfiltration and ultrafiltration membranes as the essential pretreatments to remove organisms, biomass and other pollutants. Besides, nanofiltration and electrodialysis have been very useful to reduce fouling, increase water recovery, and extract valuable minerals and metals, such as lithium, uranium, precious metals, and rare earth elements from deep seawater. This review paper discusses these aspects, comprehensively.
{"title":"Membrane Technology in Deep Seawater Exploration: A Mini Review","authors":"Widda Rahmah, A. K. Wardani, G. Lugito, I. Wenten","doi":"10.22079/JMSR.2019.110529.1270","DOIUrl":"https://doi.org/10.22079/JMSR.2019.110529.1270","url":null,"abstract":"Deep seawater is a valuable renewable resource. Due to its outstanding characteristics (i.e., clean, nutrient-rich and cold), deep seawater has been utilized in various subjects, such as mariculture, agriculture, food and beverage, pharmaceutical, medical, and renewable energy. As a result, deep seawater utilization cannot be separated from membrane technologies. Reverse osmosis has become the most common desalination process to prepare deep-sea drinking water with microfiltration and ultrafiltration membranes as the essential pretreatments to remove organisms, biomass and other pollutants. Besides, nanofiltration and electrodialysis have been very useful to reduce fouling, increase water recovery, and extract valuable minerals and metals, such as lithium, uranium, precious metals, and rare earth elements from deep seawater. This review paper discusses these aspects, comprehensively.","PeriodicalId":16427,"journal":{"name":"Journal of Membrane Science and Research","volume":"6 1","pages":"280-294"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42247371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.22079/JMSR.2019.106501.1260
J. Kim
Although the membrane process is recognized as a green technology and is considered as a key player in the process intensification movement, it is not widely known that the fabrication of membrane itself generates significant amount of waste. With the growing membrane market, more efforts must be placed on improving the sustainability of membrane fabrication such as replacing toxic organic solvents, minimizing mass intensity of fabrication process, and treating solvent-contaminated membrane wastewater. In this review, recent progresses on improving the sustainability of membrane fabrication have been discussed. In particular, recently-identified green solvents have been compiled, as well as novel methods to apply green solvents to fabricate high performance membranes. In addition, process intensification to minimize solvent waste, and to treat solvent-contaminated wastewater from membrane fabrication process, have been discussed.
{"title":"Recent Progress on Improving the Sustainability of Membrane Fabrication","authors":"J. Kim","doi":"10.22079/JMSR.2019.106501.1260","DOIUrl":"https://doi.org/10.22079/JMSR.2019.106501.1260","url":null,"abstract":"Although the membrane process is recognized as a green technology and is considered as a key player in the process intensification movement, it is not widely known that the fabrication of membrane itself generates significant amount of waste. With the growing membrane market, more efforts must be placed on improving the sustainability of membrane fabrication such as replacing toxic organic solvents, minimizing mass intensity of fabrication process, and treating solvent-contaminated membrane wastewater. In this review, recent progresses on improving the sustainability of membrane fabrication have been discussed. In particular, recently-identified green solvents have been compiled, as well as novel methods to apply green solvents to fabricate high performance membranes. In addition, process intensification to minimize solvent waste, and to treat solvent-contaminated wastewater from membrane fabrication process, have been discussed.","PeriodicalId":16427,"journal":{"name":"Journal of Membrane Science and Research","volume":"6 1","pages":"241-250"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43043416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.22079/JMSR.2020.122163.1349
A. Cassano, C. Conidi, E. Drioli
Membrane distillation (MD) and osmotic distillation (OD) are emerging athermal processing techniques of great interest in agro-food production where the most part of products is sensitive to thermal treatments. With respect to conventional methods, MD and OD are competitive alternatives, able to work in an environmental-friendly and cost-efficient way, for preserving the nutritional and sensorial attributes of processed foods, in agreement with the increased expectations of consumers and producers. This review will provide an overview of the current status and recent developments in the use of MD and OD in agro-food applications. Theoretical aspects and specific applications in the field of fruit juice concentration, milk and dairy industry, wine dealcoholization and agro-food waste processing, are presented and discussed. The integration of these processes with other membrane operations within the logic of the process intensification strategy is also evaluated in order to overcome specific challenges for a sustainable industrial development.
{"title":"A Comprehensive Review of Membrane Distillation and Osmotic Distillation in Agro-Food Applications","authors":"A. Cassano, C. Conidi, E. Drioli","doi":"10.22079/JMSR.2020.122163.1349","DOIUrl":"https://doi.org/10.22079/JMSR.2020.122163.1349","url":null,"abstract":"Membrane distillation (MD) and osmotic distillation (OD) are emerging athermal processing techniques of great interest in agro-food production where the most part of products is sensitive to thermal treatments. With respect to conventional methods, MD and OD are competitive alternatives, able to work in an environmental-friendly and cost-efficient way, for preserving the nutritional and sensorial attributes of processed foods, in agreement with the increased expectations of consumers and producers. This review will provide an overview of the current status and recent developments in the use of MD and OD in agro-food applications. Theoretical aspects and specific applications in the field of fruit juice concentration, milk and dairy industry, wine dealcoholization and agro-food waste processing, are presented and discussed. The integration of these processes with other membrane operations within the logic of the process intensification strategy is also evaluated in order to overcome specific challenges for a sustainable industrial development.","PeriodicalId":16427,"journal":{"name":"Journal of Membrane Science and Research","volume":"6 1","pages":"304-318"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45525359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.22079/JMSR.2019.105375.1255
K. Khulbe, T. Matsuura
Electrospinning is a simple and versatile technique that relies on the electrostatic repulsion between surface charges to continuously draw nanofibers from a viscoelastic fluid. Electrospinning can generate nanofibers with a number of secondary structures. Surface and/or interior of nanofibers can be functionalized with molecular species or nanoparticles during or after an electrospinning process to obtain desirable results. In a short period, elecrospun nanofiber membranes (ENMs) have gained popularity due to the facile fabrication, interconnectivity and large area/volume ratio. However, ENMs’ pore sizes are intrinsically very large fractions of micrometer to few macrometer, which makes modification of surface chemistry and especially reduction of the ENM pore size indispensable for wider applications of ENMs for membrane separation processes. The modification of nanofibers has been applied widely to give them improved properties. This review paper will provide the progress have recently made on the modification of ENMs to enhance their performance in various membrane separation processes.
{"title":"The Advances of Electrospun Nanofibers in Membrane Technology","authors":"K. Khulbe, T. Matsuura","doi":"10.22079/JMSR.2019.105375.1255","DOIUrl":"https://doi.org/10.22079/JMSR.2019.105375.1255","url":null,"abstract":"Electrospinning is a simple and versatile technique that relies on the electrostatic repulsion between surface charges to continuously draw nanofibers from a viscoelastic fluid. Electrospinning can generate nanofibers with a number of secondary structures. Surface and/or interior of nanofibers can be functionalized with molecular species or nanoparticles during or after an electrospinning process to obtain desirable results. In a short period, elecrospun nanofiber membranes (ENMs) have gained popularity due to the facile fabrication, interconnectivity and large area/volume ratio. However, ENMs’ pore sizes are intrinsically very large fractions of micrometer to few macrometer, which makes modification of surface chemistry and especially reduction of the ENM pore size indispensable for wider applications of ENMs for membrane separation processes. The modification of nanofibers has been applied widely to give them improved properties. This review paper will provide the progress have recently made on the modification of ENMs to enhance their performance in various membrane separation processes.","PeriodicalId":16427,"journal":{"name":"Journal of Membrane Science and Research","volume":"6 1","pages":"251-268"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44337366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.22079/JMSR.2020.123897.1363
C. Castel, R. Bounaceur, É. Favre
Membrane processes are today one of the key technologies for industrial gas separations and show growing interest for future use in sustainable production systems. Besides materials development, dedicated engineering methods are of major importance for the rigorous and most efficient design of membrane units and systems. Starting from approaches based on simplified hypotheses developed in the 50’s, modelling and simulation tools for membrane gas separations have gradually evolved, up to modern process synthesis softwares and programs. In this paper, an overview of major industrial applications and associated simulation approaches of membrane gas separations is first proposed. In a second step, the current possibilities and limitations of Process Systems Engineering (PSE) softwares is detailed. The necessity to take into account specificities such as variable permeability, pressure drop effects and/or non-isothermal conditions is discussed. Perspectives offered by recent process synthesis methods are finally analysed, with an emphasis on challenges such as multicomponent, multi-membrane, multi-operation processes (such as hybrid processes). The role of membrane gas separation engineering methods and new opportunities for future applications are discussed.
{"title":"Engineering of Membrane Gas Separation Processes: State of The Art and Prospects","authors":"C. Castel, R. Bounaceur, É. Favre","doi":"10.22079/JMSR.2020.123897.1363","DOIUrl":"https://doi.org/10.22079/JMSR.2020.123897.1363","url":null,"abstract":"Membrane processes are today one of the key technologies for industrial gas separations and show growing interest for future use in sustainable production systems. Besides materials \u0000development, dedicated engineering methods are of major importance for the rigorous and most efficient design of membrane units and systems. Starting from approaches based \u0000on simplified hypotheses developed in the 50’s, modelling and simulation tools for membrane gas separations have gradually evolved, up to modern process synthesis softwares \u0000and programs. In this paper, an overview of major industrial applications and associated simulation approaches of membrane gas separations is first proposed. In a second step, the \u0000current possibilities and limitations of Process Systems Engineering (PSE) softwares is detailed. The necessity to take into account specificities such as variable permeability, pressure \u0000drop effects and/or non-isothermal conditions is discussed. Perspectives offered by recent process synthesis methods are finally analysed, with an emphasis on challenges such as \u0000multicomponent, multi-membrane, multi-operation processes (such as hybrid processes). The role of membrane gas separation engineering methods and new opportunities for future \u0000applications are discussed.","PeriodicalId":16427,"journal":{"name":"Journal of Membrane Science and Research","volume":"6 1","pages":"295-303"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46579097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-06-17DOI: 10.22079/JMSR.2020.122067.1348
Y. Mansourpanah, Fatemeh Bagri
Selectivity and permeability are two significant parameters in the gas separation process. Hence, nowadays, modification of membrane to improve the parameters mentioned above, have highly gained attention. In this study, to increase the performance of the polymeric membrane, bare ZIF-8 nanoparticle (NP), as well as annealed and NH2 -functionalized ones (Medium-sized particles less than 100 nm), were introduced into the structure of polydimethylsiloxane (PDMS) top layer at different concentrations. The high porosity and gas adsorption characteristics of the ZIF-8 made it a proper nanofiller to modify and improve the efficiency of polymeric membranes. The CO2 /N2 and O2 /N2 selectivity of the membranes improved regarding the loading ZIF-8. In addition, NH2 -functionalized and thermal annealed ZIF-8s employed to compare the result of the treated NPs on the efficiency of the fabricated MMMs. Consequently, the selectivity of both mentioned pair gases improved. At 2 wt% of annealed ZIF-8s, the mixed matrix membrane (MMM) presents a desired separation selectivity over 5.5 and 22.37 for O2 /N2 and CO2 /N2 , respectively.
{"title":"Improvement of the Performance of PDMS Top Layer of Mixed Matrix Membrane Incorporated with Treated ZIF-8 for Gas Separation","authors":"Y. Mansourpanah, Fatemeh Bagri","doi":"10.22079/JMSR.2020.122067.1348","DOIUrl":"https://doi.org/10.22079/JMSR.2020.122067.1348","url":null,"abstract":"Selectivity and permeability are two significant parameters in the gas separation process. Hence, nowadays, modification of membrane to improve the parameters mentioned above, have highly gained attention. In this study, to increase the performance of the polymeric membrane, bare ZIF-8 nanoparticle (NP), as well as annealed and NH2 -functionalized ones (Medium-sized particles less than 100 nm), were introduced into the structure of polydimethylsiloxane (PDMS) top layer at different concentrations. The high porosity and gas adsorption characteristics of the ZIF-8 made it a proper nanofiller to modify and improve the efficiency of polymeric membranes. The CO2 /N2 and O2 /N2 selectivity of the membranes improved regarding the loading ZIF-8. In addition, NH2 -functionalized and thermal annealed ZIF-8s employed to compare the result of the treated NPs on the efficiency of the fabricated MMMs. Consequently, the selectivity of both mentioned pair gases improved. At 2 wt% of annealed ZIF-8s, the mixed matrix membrane (MMM) presents a desired separation selectivity over 5.5 and 22.37 for O2 /N2 and CO2 /N2 , respectively.","PeriodicalId":16427,"journal":{"name":"Journal of Membrane Science and Research","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49296780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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