Pub Date : 2025-02-01DOI: 10.1016/j.jece.2024.115144
Yilin Yang , Jiaojiao Zhu , Wenfang Li , Miaoen Zhou , Jingrui Ye , Guangyu He , Haiqun Chen
The electrochemical nitrate reduction to ammonia (NRA) has emerged as a promising and environmentally friendly alternative to the fossil-intensive Haber-Bosch process. Single-atom catalysts (SACs) have demonstrated significant potential for NRA due to their high intrinsic activity and maximum atom utilization. Various SACs with optimized coordination configurations and enhanced adsorption properties have been reported to show excellent NH3 selectivity, faradaic efficiency (FE), and yield rates. This review highlights recent advancements in SACs for electrochemical NRA, focusing on both noble metals (Pd, Ru, Ag, Au) and non-noble metals (Fe, Cu, Ni, Co). Key developments in the synthesis, optimization, and stabilization of SACs are discussed, with particular emphasis on the effect of supports, including metal-organic frameworks (MOFs), carbon materials, and metal oxides. This review aims to provide guidelines for the design and development of SACs in electrochemical NRA, advancing green ammonia synthesis through a comprehensive understanding of theoretical calculations and experimental findings.
{"title":"Recent advances in single-atom catalysts for electrochemical nitrate reduction to ammonia","authors":"Yilin Yang , Jiaojiao Zhu , Wenfang Li , Miaoen Zhou , Jingrui Ye , Guangyu He , Haiqun Chen","doi":"10.1016/j.jece.2024.115144","DOIUrl":"10.1016/j.jece.2024.115144","url":null,"abstract":"<div><div>The electrochemical nitrate reduction to ammonia (NRA) has emerged as a promising and environmentally friendly alternative to the fossil-intensive Haber-Bosch process. Single-atom catalysts (SACs) have demonstrated significant potential for NRA due to their high intrinsic activity and maximum atom utilization. Various SACs with optimized coordination configurations and enhanced adsorption properties have been reported to show excellent NH<sub>3</sub> selectivity, faradaic efficiency (FE), and yield rates. This review highlights recent advancements in SACs for electrochemical NRA, focusing on both noble metals (Pd, Ru, Ag, Au) and non-noble metals (Fe, Cu, Ni, Co). Key developments in the synthesis, optimization, and stabilization of SACs are discussed, with particular emphasis on the effect of supports, including metal-organic frameworks (MOFs), carbon materials, and metal oxides. This review aims to provide guidelines for the design and development of SACs in electrochemical NRA, advancing green ammonia synthesis through a comprehensive understanding of theoretical calculations and experimental findings.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 1","pages":"Article 115144"},"PeriodicalIF":7.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143181594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/j.jece.2024.114952
Shadwa Ibrahim, Bassim H. Hameed, Fares A. Almomani
The rapid industrialization relying on fossil fuel burning has escalated the greenhouse gases (GHGs) emissions issue impacting the environment and mankind negatively. Post-combustion capture (PCC) through fixed bed adsorption technology can participate in achieving the zero GHGs emissions goals by 2050 and stabilizing global interval temperature rise. This review explores the recent developments in the performance of carbonaceous and non-carbonaceous adsorbents in PCC fixed bed adsorption systems relying on the adsorbents' characterization properties, the breakthrough experiments, which were analyzed via their influential factors, such as the adsorption temperature, CO2 feed concentration, and feed flow rate, and the regeneration ability. Great advances have been recorded for PCC fixed bed adsorption, however, the capture of quite low concentrations of CO2 has not been illustrated comprehensively enough. Future studies need to offer more reliability to the suggested adsorbents for large-scale implementation via life cycle assessment and environmental impact assessment studies.
{"title":"Review on recent progress in post-combustion carbon dioxide capture using carbonaceous and non-carbonaceous materials in fixed-bed adsorption column","authors":"Shadwa Ibrahim, Bassim H. Hameed, Fares A. Almomani","doi":"10.1016/j.jece.2024.114952","DOIUrl":"10.1016/j.jece.2024.114952","url":null,"abstract":"<div><div>The rapid industrialization relying on fossil fuel burning has escalated the greenhouse gases (GHGs) emissions issue impacting the environment and mankind negatively. Post-combustion capture (PCC) through fixed bed adsorption technology can participate in achieving the zero GHGs emissions goals by 2050 and stabilizing global interval temperature rise. This review explores the recent developments in the performance of carbonaceous and non-carbonaceous adsorbents in PCC fixed bed adsorption systems relying on the adsorbents' characterization properties, the breakthrough experiments, which were analyzed via their influential factors, such as the adsorption temperature, CO<sub>2</sub> feed concentration, and feed flow rate, and the regeneration ability. Great advances have been recorded for PCC fixed bed adsorption, however, the capture of quite low concentrations of CO<sub>2</sub> has not been illustrated comprehensively enough. Future studies need to offer more reliability to the suggested adsorbents for large-scale implementation via life cycle assessment and environmental impact assessment studies.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 1","pages":"Article 114952"},"PeriodicalIF":7.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143181596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/j.jece.2024.115030
Tridip Boruah, Hemen Deka
The present study was designed to understand the speciation route of 7 heavy metals (Cu, Fe, Mn, Zn, Ni, Co, and Cr) during the vermicomposting of food industry sludge through a novel approach achieved through combining vibrational and electronic transitions employing spectroscopic interpretations. Earthworm species Eisenia fetida was utilized in the experiment conducted for the duration of 60 days. The results revealed that the addition of earthworms and the participation of microorganisms appearing during various stages of vermicomposting have accelerated the waste mineralization process. The concentrations of heavy metals have shown a significant decline upon vermicomposting as the HMs speciation route was triggered through the generation of metal ions. The spectroscopic interpretations revealed that the production of heavy metal intermediates coupled with oxides, sulphates, chlorides, and amines contributes to the bio-transformations of HMs achieving their successful immobilization in the vermicomposting system. Furthermore, the intermediate compounds found in the vermicompost are reported to have the potential to promote plant growth establishing vermicomposting as a superior management strategy for industrial organic wastes.
{"title":"Unravelling heavy metals (HMs) speciation route during vermiremediation employing a novel approach based on spectroscopic interpretations","authors":"Tridip Boruah, Hemen Deka","doi":"10.1016/j.jece.2024.115030","DOIUrl":"10.1016/j.jece.2024.115030","url":null,"abstract":"<div><div>The present study was designed to understand the speciation route of 7 heavy metals (Cu, Fe, Mn, Zn, Ni, Co, and Cr) during the vermicomposting of food industry sludge through a novel approach achieved through combining vibrational and electronic transitions employing spectroscopic interpretations. Earthworm species <em>Eisenia fetida</em> was utilized in the experiment conducted for the duration of 60 days. The results revealed that the addition of earthworms and the participation of microorganisms appearing during various stages of vermicomposting have accelerated the waste mineralization process. The concentrations of heavy metals have shown a significant decline upon vermicomposting as the HMs speciation route was triggered through the generation of metal ions. The spectroscopic interpretations revealed that the production of heavy metal intermediates coupled with oxides, sulphates, chlorides, and amines contributes to the bio-transformations of HMs achieving their successful immobilization in the vermicomposting system. Furthermore, the intermediate compounds found in the vermicompost are reported to have the potential to promote plant growth establishing vermicomposting as a superior management strategy for industrial organic wastes.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 1","pages":"Article 115030"},"PeriodicalIF":7.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143182701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The recent scenarios in the realm of metals and their associated implications in varied industrial sectors calls for the extensive exploration of the prevalent issue of corrosion, its economic implications, and inhibition techniques. Nano ferrites (NFs) in this regard have been seen emerged as highly promising corrosion inhibitors, addressing the challenges imposed by conventional inhibitors as well as perceived aligning with the goals of green and sustainable technologies. Highlighting the significance of nanostructured materials, the review specifically focuses on NFs, detailing their structural and chemical attributes, including high surface area along with extraordinary chemical and thermal stabilities which contribute to their effectiveness as corrosion inhibitors. The synthesis methods of NFs have been critically examined particularly those allowing for a controlled precision over particle size as well as composition. Additionally, the review explores various surface modification strategies aimed at improving their interaction with metal surfaces, resulting in genesis of robust protective films and passivation layers. A thorough literature review has been included highlighting the deployment of varied NFs as corrosion inhibitors across diverse environments. Their associated advantages and limitations as corrosion inhibitors have also been generously reviewed, providing a comprehensive overview of these materials as corrosion inhibitors. Additionally, the work concludes with a discussion on future perspectives, emphasizing the need for innovative synthesis techniques, advanced characterization methods and interdisciplinary collaboration to fully harness the potential of NFs in corrosion inhibition.
{"title":"A critical review on nano ferrites pioneering a paradigm shift in corrosion inhibition towards different metal/alloys in diverse corrosive environments","authors":"Sheetal Kundu , Akanksha , Sheetal , Sanjeeve Thakur , Vinod Kumar , Balaram Pani , Manjeet Singh , Ashish Kumar Singh","doi":"10.1016/j.jece.2024.115277","DOIUrl":"10.1016/j.jece.2024.115277","url":null,"abstract":"<div><div>The recent scenarios in the realm of metals and their associated implications in varied industrial sectors calls for the extensive exploration of the prevalent issue of corrosion, its economic implications, and inhibition techniques. Nano ferrites (NFs) in this regard have been seen emerged as highly promising corrosion inhibitors, addressing the challenges imposed by conventional inhibitors as well as perceived aligning with the goals of green and sustainable technologies. Highlighting the significance of nanostructured materials, the review specifically focuses on NFs, detailing their structural and chemical attributes, including high surface area along with extraordinary chemical and thermal stabilities which contribute to their effectiveness as corrosion inhibitors. The synthesis methods of NFs have been critically examined particularly those allowing for a controlled precision over particle size as well as composition. Additionally, the review explores various surface modification strategies aimed at improving their interaction with metal surfaces, resulting in genesis of robust protective films and passivation layers. A thorough literature review has been included highlighting the deployment of varied NFs as corrosion inhibitors across diverse environments. Their associated advantages and limitations as corrosion inhibitors have also been generously reviewed, providing a comprehensive overview of these materials as corrosion inhibitors. Additionally, the work concludes with a discussion on future perspectives, emphasizing the need for innovative synthesis techniques, advanced characterization methods and interdisciplinary collaboration to fully harness the potential of NFs in corrosion inhibition.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 1","pages":"Article 115277"},"PeriodicalIF":7.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143182590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/j.jece.2024.115199
Gabriel Rodrigues dos Anjos Silva, Victor Rezende Moreira, Míriam Cristina Santos Amaral
The improper discharge of oil refinery wastewater poses severe threats to ecosystems due to its hazardous compounds, highlighting the need effective treatment solutions. Membrane technologies have been successfully employed in refining plants for wastewater treatment, ensuring stability in pollutant removal and enabling water reuse. This review explores recent advances in these technologies, focusing on overcoming the critical challenge of membrane fouling, which reduces lifespan and selectivity. Advances in membrane modification, particularly through additive blending or surface coating, show promise in improving performance and fouling resistance. Additives like photocatalytic compounds (e.g., TiO₂) and graphene oxide (GO) enhance membrane stability, hydrophilicity, and anti-fouling properties. Furthermore, membrane modification through blending provides a more uniform dispersion of additives and reduces additive leaching, while the surface coating technique with adhesive additives like polydopamine can enhance mechanical stability and anti-fouling properties with greater operational simplicity. Additionally, this review highlights the recycling of reverse osmosis (RO) membranes used to provide demineralized water in refineries, typically discarded prematurely in refining plants, as a significant opportunity. Their reuse as nanofiltration (NF) or ultrafiltration (UF) membranes offers substantial economic and environmental benefits. Overall, this review underscores the potential of membrane technologies to enhance refinery wastewater treatment and suggests promising directions for future research.
{"title":"Applications and advancements in membrane technologies for sustainable petroleum refinery wastewater treatment","authors":"Gabriel Rodrigues dos Anjos Silva, Victor Rezende Moreira, Míriam Cristina Santos Amaral","doi":"10.1016/j.jece.2024.115199","DOIUrl":"10.1016/j.jece.2024.115199","url":null,"abstract":"<div><div>The improper discharge of oil refinery wastewater poses severe threats to ecosystems due to its hazardous compounds, highlighting the need effective treatment solutions<strong>.</strong> Membrane technologies have been successfully employed in refining plants for wastewater treatment, ensuring stability in pollutant removal and enabling water reuse. This review explores recent advances in these technologies, focusing on overcoming the critical challenge of membrane fouling, which reduces lifespan and selectivity. Advances in membrane modification, particularly through additive blending or surface coating, show promise in improving performance and fouling resistance. Additives like photocatalytic compounds (e.g., TiO₂) and graphene oxide (GO) enhance membrane stability, hydrophilicity, and anti-fouling properties. Furthermore, membrane modification through blending provides a more uniform dispersion of additives and reduces additive leaching, while the surface coating technique with adhesive additives like polydopamine can enhance mechanical stability and anti-fouling properties with greater operational simplicity. Additionally, this review highlights the recycling of reverse osmosis (RO) membranes used to provide demineralized water in refineries, typically discarded prematurely in refining plants, as a significant opportunity. Their reuse as nanofiltration (NF) or ultrafiltration (UF) membranes offers substantial economic and environmental benefits<strong>.</strong> Overall, this review underscores the potential of membrane technologies to enhance refinery wastewater treatment and suggests promising directions for future research.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 1","pages":"Article 115199"},"PeriodicalIF":7.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143182627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/j.jece.2024.114998
Amaal Abdulraqeb Ali , Amani Al-Othman , Muhammad Tawalbeh , Aamer Ali , Cejna A. Quist-Jensen , Mohammad Mahdi A. Shirazi
With the emergence of global challenges, sustainability has become a pivotal element in the world’s development agendas. To achieve global development, 17 sustainability development goals (SDGs) were developed by the United Nations in 2012. Recently, membrane technologies have been rising to the spotlight as a promising green alternative for the accomplishment of these SDGs. This is due to their numerous advantages, including high selectivity, lower cost, relatively easy upscaling, mild processing conditions, compact system with minimized steel usage, and reduced energy consumption. Despite its growing importance in sustainable development, membrane technologies have not been reviewed and rigorously analyzed for all SDGs. This review critically analyzes membrane technologies' significant position in SDGs to fill this gap in the literature. More precisely, this review uniquely delves into the versatile role of membrane technologies in contributing to the SDGs with state-of-the-art examples, hence, aiding in solving pressing global challenges such as clean water, affordable and clean energy, climate action, poverty, life below water, etc. Furthermore, by evaluating the economic and social dimensions of membrane technologies in sustainable development, this review comprehensively highlights the holistic advantages offered by various membrane processes in the accomplishment of SDGs. This paper concludes by discussing future directions that could be implemented to harness the full potential of membrane technologies in SDGs accomplishment.
{"title":"Membrane technologies for sustainable development goals: A critical review of bright horizons","authors":"Amaal Abdulraqeb Ali , Amani Al-Othman , Muhammad Tawalbeh , Aamer Ali , Cejna A. Quist-Jensen , Mohammad Mahdi A. Shirazi","doi":"10.1016/j.jece.2024.114998","DOIUrl":"10.1016/j.jece.2024.114998","url":null,"abstract":"<div><div>With the emergence of global challenges, sustainability has become a pivotal element in the world’s development agendas. To achieve global development, 17 sustainability development goals (SDGs) were developed by the United Nations in 2012. Recently, membrane technologies have been rising to the spotlight as a promising green alternative for the accomplishment of these SDGs. This is due to their numerous advantages, including high selectivity, lower cost, relatively easy upscaling, mild processing conditions, compact system with minimized steel usage, and reduced energy consumption. Despite its growing importance in sustainable development, membrane technologies have not been reviewed and rigorously analyzed for all SDGs. This review critically analyzes membrane technologies' significant position in SDGs to fill this gap in the literature. More precisely, this review uniquely delves into the versatile role of membrane technologies in contributing to the SDGs with state-of-the-art examples, hence, aiding in solving pressing global challenges such as clean water, affordable and clean energy, climate action, poverty, life below water, etc. Furthermore, by evaluating the economic and social dimensions of membrane technologies in sustainable development, this review comprehensively highlights the holistic advantages offered by various membrane processes in the accomplishment of SDGs. This paper concludes by discussing future directions that could be implemented to harness the full potential of membrane technologies in SDGs accomplishment.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 1","pages":"Article 114998"},"PeriodicalIF":7.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143182690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/j.jece.2024.115009
Jialin Qiu , Ye’an Zhu , Bo Wang , Yidan Nie , Zengkai Song , Peng Li , Zongbo Xie , Zhanggao Le
Photocatalytic removal of hexavalent uranium is an effective method for reducing radioactive uranium contamination in water. Herein, novel heterojunction catalysts, bismuth vanadate/hydrothermal carbon nitride (BiVO4/HCN), were synthesized and firstly successfully implemented for uranium removal. For example, the removal rate of U(VI) over 0.10BiVO4/HCN reached 98.5 % for the first time and more than 95.9 % for five consecutive cycles. Subsequent characterization analyzes confirmed that increased specific surface area, redshift of the absorption band, and efficient charge separation of the photogenerated electron-hole pairs collectively contributed to the improved photocatalytic performance. Noteworthily, free radical quenching and electron spin resonance spectroscopy results indicate that holes, photogenerated electrons, and superoxide radicals are the major active species for the photoreduction of U(VI). Finally, a possible photocatalytic mechanism of U(VI) removal was proposed.
{"title":"Enhanced removal of aqueous uranium: Photocatalytic U(VI) reduction over bismuth vanadate/hydrothermal carbon nitride under visible light","authors":"Jialin Qiu , Ye’an Zhu , Bo Wang , Yidan Nie , Zengkai Song , Peng Li , Zongbo Xie , Zhanggao Le","doi":"10.1016/j.jece.2024.115009","DOIUrl":"10.1016/j.jece.2024.115009","url":null,"abstract":"<div><div>Photocatalytic removal of hexavalent uranium is an effective method for reducing radioactive uranium contamination in water. Herein, novel heterojunction catalysts, bismuth vanadate/hydrothermal carbon nitride (BiVO<sub>4</sub>/HCN), were synthesized and firstly successfully implemented for uranium removal. For example, the removal rate of U(VI) over 0.10BiVO<sub>4</sub>/HCN reached 98.5 % for the first time and more than 95.9 % for five consecutive cycles. Subsequent characterization analyzes confirmed that increased specific surface area, redshift of the absorption band, and efficient charge separation of the photogenerated electron-hole pairs collectively contributed to the improved photocatalytic performance. Noteworthily, free radical quenching and electron spin resonance spectroscopy results indicate that holes, photogenerated electrons, and superoxide radicals are the major active species for the photoreduction of U(VI). Finally, a possible photocatalytic mechanism of U(VI) removal was proposed.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 1","pages":"Article 115009"},"PeriodicalIF":7.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143181570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/j.jece.2024.114913
Asmat Ullah Khan , Ojo Samuel , Mohd Hafiz Dzarfan Othman , Mohammad Younas , Roziana Kamaludin , Zahid Iqbal Khan , Mohammed Faleh Abd Al-Ogaili , Naoko Yoshida , Tonni Agustiono Kurniawan , Mohd Hafiz Puteh , Farahdila Kadirkhan , Muhammad Omer Aijaz , Mohammad Rezaul Karim
As the demand for cleaner energy sources and carbon dioxide (CO2) capture technologies increases, membrane-based separation is increasingly seen as a viable, scalable, and eco-friendly option. However, fabricating mechanically stable membranes with high permeance and selectivity remains a significant challenge, owing to the limited CO2 affinity sites and transport channels inside the membrane. This study investigates integrating the unique properties of metal-organic frameworks (MOFs) with the structural benefits of dual-layer hollow fiber (DLHF) membranes. Herein, a polyethyleneimine (PEI) functionalized bimetallic MOF (PEI@HKUST-1(Cu, Mg)) as filler was blended to polysulfone(PSf) matrix to fabricate MOF/PSf mixed matrix membrane (MMM) through co-extrusion and dry-jet wetting spinning process. The open metal sites (Cu2+ and Mg2+), high porosity, and the CO2-philicity of the amine groups of the PEI-functionalized MOF could create additional CO2 binding sites and transport channels, thus promoting the rapid permeation of CO2 molecules through the membrane. The improved affinity among the organic linker, amines group, and polymer chains facilitated the formation of defect-free hollow fibers. Notably, the tensile strength increases from 4.51 MPa to 8.78 MPa for pure membranes to 10 wt% MOF-loaded membranes, showing a direct correlation between fiber strength and MOF loadings. The optimized membrane containing 5 wt% PEI@HKUST-1(Cu, Mg) exhibited a CO2 permeance of 28 GPU and a CO2/CH4 selectivity of 51, displaying an increase of 75 % and 85.45 %, respectively, over the pure PSf membrane. These findings suggest that incorporating amine-functionalized MOFs can enhance the CO2 separation performance and mechanical stability of hollow fiber membranes used in natural gas purification.
{"title":"Modifying polysulfone dual-layer hollow fiber membrane with amine-functionalized bimetallic MOF (PEI@HKUST-1(Cu, Mg)) for improved mechanical stability and CO2/CH4 separation performance","authors":"Asmat Ullah Khan , Ojo Samuel , Mohd Hafiz Dzarfan Othman , Mohammad Younas , Roziana Kamaludin , Zahid Iqbal Khan , Mohammed Faleh Abd Al-Ogaili , Naoko Yoshida , Tonni Agustiono Kurniawan , Mohd Hafiz Puteh , Farahdila Kadirkhan , Muhammad Omer Aijaz , Mohammad Rezaul Karim","doi":"10.1016/j.jece.2024.114913","DOIUrl":"10.1016/j.jece.2024.114913","url":null,"abstract":"<div><div>As the demand for cleaner energy sources and carbon dioxide (CO<sub>2</sub>) capture technologies increases, membrane-based separation is increasingly seen as a viable, scalable, and eco-friendly option. However, fabricating mechanically stable membranes with high permeance and selectivity remains a significant challenge, owing to the limited CO<sub>2</sub> affinity sites and transport channels inside the membrane. This study investigates integrating the unique properties of metal-organic frameworks (MOFs) with the structural benefits of dual-layer hollow fiber (DLHF) membranes. Herein, a polyethyleneimine (PEI) functionalized bimetallic MOF (PEI@HKUST-1(Cu, Mg)) as filler was blended to polysulfone(PSf) matrix to fabricate MOF/PSf mixed matrix membrane (MMM) through co-extrusion and dry-jet wetting spinning process. The open metal sites (Cu<sup>2+</sup> and Mg<sup>2+</sup>), high porosity, and the CO<sub>2</sub>-philicity of the amine groups of the PEI-functionalized MOF could create additional CO<sub>2</sub> binding sites and transport channels, thus promoting the rapid permeation of CO<sub>2</sub> molecules through the membrane. The improved affinity among the organic linker, amines group, and polymer chains facilitated the formation of defect-free hollow fibers. Notably, the tensile strength increases from 4.51 MPa to 8.78 MPa for pure membranes to 10 wt% MOF-loaded membranes, showing a direct correlation between fiber strength and MOF loadings. The optimized membrane containing 5 wt% PEI@HKUST-1(Cu, Mg) exhibited a CO<sub>2</sub> permeance of 28 GPU and a CO<sub>2</sub>/CH<sub>4</sub> selectivity of 51, displaying an increase of 75 % and 85.45 %, respectively, over the pure PSf membrane. These findings suggest that incorporating amine-functionalized MOFs can enhance the CO<sub>2</sub> separation performance and mechanical stability of hollow fiber membranes used in natural gas purification.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 1","pages":"Article 114913"},"PeriodicalIF":7.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143181571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pristine biochar tends to be poorly structured and with limited active sites, inhibiting its commercial utilization. To expand the adsorption range of biochar and improve its adsorption properties and activity, functionalization with N-related groups has been proposed. However, nitrogen self-doped biochar is a material that is itself enriched with carbon and nitrogen and can be prepared from a variety of feedstocks based on animals, plants, food, algae, organic wastes, proteins/amino acids, fungi, and others. The nitrogen-containing functional groups of biochar hold the promise of a wide range of applications such as pollutant adsorption, catalytic adsorption, and energy storage. To date, many methods have been developed and used to enhance the functionality of nitrogen-containing biochar for its application and commercialization. However, there are few reviews related to the development and application of nitrogen self-doped biochar technology. The presence of N-functional groups on the surface of biochar enhances the alkalinity of the carbon surface, promotes electrostatic interactions, and facilitates the structural properties of the biochar, providing a larger interaction region, nowadays N-biochar is widely used in several fields. This paper reviews the research progress in the preparation, activation, and role played in the application of common N-doped biochar in recent years, as well as the biomasses that can be used as references for the production of nitrogen self-doped biochar. Finally, challenges and prospects for the application of nitrogen self-doped biochar in several fields are presented.
原始生物炭往往结构不良，活性位点有限，阻碍了其商业利用。为了扩大生物炭的吸附范围，改善其吸附特性和活性，有人提出用与氮相关的基团进行功能化。然而，自掺氮的生物炭本身就是一种富含碳和氮的材料，可以从动物、植物、食物、藻类、有机废物、蛋白质/氨基酸、真菌等多种原料中制备。生物炭中的含氮官能团具有广泛的应用前景，如污染物吸附、催化吸附和能量储存。迄今为止，已经开发和使用了许多方法来增强含氮生物炭的功能，以促进其应用和商业化。然而，与氮自掺杂生物炭技术的开发和应用相关的综述却很少。生物炭表面 N 官能团的存在增强了炭表面的碱性，促进了静电相互作用，并有利于生物炭的结构特性，提供了更大的相互作用区域，如今 N-生物炭已在多个领域得到广泛应用。本文综述了近年来常见掺氮生物炭的制备、活化和在应用中发挥的作用等方面的研究进展，以及可作为氮自掺杂生物炭生产参考的生物质。最后，介绍了氮自掺杂生物炭在多个领域应用的挑战和前景。
{"title":"A review of the current status of nitrogen self-doped biochar applications","authors":"Guanbiao Ruan, Yuehong Yang, Xiaoling Peng, Junya Wang, Yongkang Guo, Weiyao Hu, Daozhao Lin","doi":"10.1016/j.jece.2024.115291","DOIUrl":"10.1016/j.jece.2024.115291","url":null,"abstract":"<div><div>Pristine biochar tends to be poorly structured and with limited active sites, inhibiting its commercial utilization. To expand the adsorption range of biochar and improve its adsorption properties and activity, functionalization with N-related groups has been proposed. However, nitrogen self-doped biochar is a material that is itself enriched with carbon and nitrogen and can be prepared from a variety of feedstocks based on animals, plants, food, algae, organic wastes, proteins/amino acids, fungi, and others. The nitrogen-containing functional groups of biochar hold the promise of a wide range of applications such as pollutant adsorption, catalytic adsorption, and energy storage. To date, many methods have been developed and used to enhance the functionality of nitrogen-containing biochar for its application and commercialization. However, there are few reviews related to the development and application of nitrogen self-doped biochar technology. The presence of N-functional groups on the surface of biochar enhances the alkalinity of the carbon surface, promotes electrostatic interactions, and facilitates the structural properties of the biochar, providing a larger interaction region, nowadays N-biochar is widely used in several fields. This paper reviews the research progress in the preparation, activation, and role played in the application of common N-doped biochar in recent years, as well as the biomasses that can be used as references for the production of nitrogen self-doped biochar. Finally, challenges and prospects for the application of nitrogen self-doped biochar in several fields are presented.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 1","pages":"Article 115291"},"PeriodicalIF":7.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143182629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/j.jece.2024.113649
Kevin G. McGuigan, Wesaal Khan, Rita Dhodapkar, Lyda Patricia Sabogal Paz, Stefanos Giannakis, Despo Fatta-Kassinos
{"title":"Sustainable water treatment technologies for use in resource-poor environments","authors":"Kevin G. McGuigan, Wesaal Khan, Rita Dhodapkar, Lyda Patricia Sabogal Paz, Stefanos Giannakis, Despo Fatta-Kassinos","doi":"10.1016/j.jece.2024.113649","DOIUrl":"10.1016/j.jece.2024.113649","url":null,"abstract":"","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 1","pages":"Article 113649"},"PeriodicalIF":7.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141846069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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