Pub Date : 2025-03-04DOI: 10.1016/j.jece.2025.116045
Xingyuan Gao , Yiyu Deng , Zining Wei , Zhuobin Li , Nianzu Peng , Xueyi Li , Li Li , Liaochuan Jiang , Shuxian Qiu , Danhua Zhao , Sibudjing Kawi
This review summarizes the plasma-assisted catalytic removal of volatile organic compounds (VOCs) over metal oxide-based catalysts. Apart from the fundamental working processes and classifications of non-thermal plasma, reaction mechanisms, combination configurations and operation modes in catalyst-plasma hybrid systems, the main contents refer to the applications of metal oxides as catalysts for the plasma catalysis of VOCs. In this part, the catalyst–plasma synergy and structure–performance relationship are discussed in depth by referring to specific examples of VOC abatement. After that, a comprehensive coverage of parameter effects is critically demonstrated, followed by the illustration of advanced reactor design. Finally, conclusive remarks and future prospects are proposed.
{"title":"Catalytic oxidation of volatile organic compounds by plasma–metal oxide coupling","authors":"Xingyuan Gao , Yiyu Deng , Zining Wei , Zhuobin Li , Nianzu Peng , Xueyi Li , Li Li , Liaochuan Jiang , Shuxian Qiu , Danhua Zhao , Sibudjing Kawi","doi":"10.1016/j.jece.2025.116045","DOIUrl":"10.1016/j.jece.2025.116045","url":null,"abstract":"<div><div>This review summarizes the plasma-assisted catalytic removal of volatile organic compounds (VOCs) over metal oxide-based catalysts. Apart from the fundamental working processes and classifications of non-thermal plasma, reaction mechanisms, combination configurations and operation modes in catalyst-plasma hybrid systems, the main contents refer to the applications of metal oxides as catalysts for the plasma catalysis of VOCs. In this part, the catalyst–plasma synergy and structure–performance relationship are discussed in depth by referring to specific examples of VOC abatement. After that, a comprehensive coverage of parameter effects is critically demonstrated, followed by the illustration of advanced reactor design. Finally, conclusive remarks and future prospects are proposed.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 2","pages":"Article 116045"},"PeriodicalIF":7.4,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143551807","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 : 2025-03-02DOI: 10.1016/j.jece.2025.116037
Yize Li, Jing He, He Liu, Chao Yan
The escalating global freshwater crisis presents a formidable challenge to development, with desalination emerging as a prominent solution. Among the diverse array of desalination technologies, capacitive deionization (CDI) holds significant promise, surpassing conventional methods such as reverse osmosis and distillation. However, the inherent limitations in the physical adsorption capacity of carbon electrodes have, thus far, impeded CDI’s desalination capacity from reaching its full potential. The burgeoning field of dual-ion capacitive deionization (DICD) has garnered significant attention. Upon application of an electric current, electrode materials in DICD configurations engage in Faradaic reactions with both cations and anion thereby demonstrating enhanced desalination efficiency and an expanded scope of potential applications. The performance of DICD is inextricably linked to the meticulous selection and design of electrode materials, prompting researchers to pursue the development of diverse and highly efficient capture electrode materials specifically tailored for different ions. This review furnishes a comprehensive examination of CDI principles and performance indicators, analyzing the evolution of device configurations with a focus on channel design variations. Furthermore, the current landscape of electrode material in DICD configurations is explored, encompassing its application prospects and challenges within the realm of brackish water desalination. Future research endeavors will prioritize enhancing electrode material stability, mitigating costs, and pioneering the discovery of more efficient electrode materials to facilitate the commercial realization of DICD technology.
{"title":"Next-generation brackish water treatment: Exploring dual-ion capacitive deionization","authors":"Yize Li, Jing He, He Liu, Chao Yan","doi":"10.1016/j.jece.2025.116037","DOIUrl":"10.1016/j.jece.2025.116037","url":null,"abstract":"<div><div>The escalating global freshwater crisis presents a formidable challenge to development, with desalination emerging as a prominent solution. Among the diverse array of desalination technologies, capacitive deionization (CDI) holds significant promise, surpassing conventional methods such as reverse osmosis and distillation. However, the inherent limitations in the physical adsorption capacity of carbon electrodes have, thus far, impeded CDI’s desalination capacity from reaching its full potential. The burgeoning field of dual-ion capacitive deionization (DICD) has garnered significant attention. Upon application of an electric current, electrode materials in DICD configurations engage in Faradaic reactions with both cations and anion thereby demonstrating enhanced desalination efficiency and an expanded scope of potential applications. The performance of DICD is inextricably linked to the meticulous selection and design of electrode materials, prompting researchers to pursue the development of diverse and highly efficient capture electrode materials specifically tailored for different ions. This review furnishes a comprehensive examination of CDI principles and performance indicators, analyzing the evolution of device configurations with a focus on channel design variations. Furthermore, the current landscape of electrode material in DICD configurations is explored, encompassing its application prospects and challenges within the realm of brackish water desalination. Future research endeavors will prioritize enhancing electrode material stability, mitigating costs, and pioneering the discovery of more efficient electrode materials to facilitate the commercial realization of DICD technology.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 2","pages":"Article 116037"},"PeriodicalIF":7.4,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143551809","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 : 2025-02-27DOI: 10.1016/j.jece.2025.115990
Yilin Liu , Junbao Fan , Jincai Su , Na Li , Xin Cui , Liwen Jin
Membrane dehumidification technology has gained significant attention for its efficiency, energy savings, and simplicity. Enhancing the performance of membrane dehumidification is crucial as it directly impacts energy efficiency and indoor comfort, promoting wider adoption of this innovative approach. Significant advances have been made in enhancing membrane dehumidification performance from the perspectives of materials, modules, and systems. This review delves into recent developments, focusing on enhancement methods, dehumidification effects, and limitations. Innovations in membrane materials, such as the use of nanoparticles and hydrophilic functional groups, improve permeability, selectivity, and durability. Moreover, novel module designs, like porous or spiral-wound configurations, increase the surface area and optimize flow dynamics, thereby boosting the dehumidification efficiency. Connecting multiple modules in series or parallel enhances performance but introduces manufacturing complexities, higher flow resistance, and fouling risks. At the system level, integrating membranes with heat recovery or renewable energy systems can reduce energy consumption by over 20 % compared to traditional methods. In this review, the optimization recommendations for membrane materials, modules, and systems were proposed. Combining molecular-scale modeling with experimental testing provides a precise path for upgrading membrane properties. The mass transfer characteristics within modules, along with multi-objective optimization, support a more efficient and rational design of the membrane module. Additionally, the exergy analysis can identify energy-intensive areas, refining the system design strategies for greater efficiency.
{"title":"Optimizing membrane dehumidification performance: A comprehensive review of materials, modules and system","authors":"Yilin Liu , Junbao Fan , Jincai Su , Na Li , Xin Cui , Liwen Jin","doi":"10.1016/j.jece.2025.115990","DOIUrl":"10.1016/j.jece.2025.115990","url":null,"abstract":"<div><div>Membrane dehumidification technology has gained significant attention for its efficiency, energy savings, and simplicity. Enhancing the performance of membrane dehumidification is crucial as it directly impacts energy efficiency and indoor comfort, promoting wider adoption of this innovative approach. Significant advances have been made in enhancing membrane dehumidification performance from the perspectives of materials, modules, and systems. This review delves into recent developments, focusing on enhancement methods, dehumidification effects, and limitations. Innovations in membrane materials, such as the use of nanoparticles and hydrophilic functional groups, improve permeability, selectivity, and durability. Moreover, novel module designs, like porous or spiral-wound configurations, increase the surface area and optimize flow dynamics, thereby boosting the dehumidification efficiency. Connecting multiple modules in series or parallel enhances performance but introduces manufacturing complexities, higher flow resistance, and fouling risks. At the system level, integrating membranes with heat recovery or renewable energy systems can reduce energy consumption by over 20 % compared to traditional methods. In this review, the optimization recommendations for membrane materials, modules, and systems were proposed. Combining molecular-scale modeling with experimental testing provides a precise path for upgrading membrane properties. The mass transfer characteristics within modules, along with multi-objective optimization, support a more efficient and rational design of the membrane module. Additionally, the exergy analysis can identify energy-intensive areas, refining the system design strategies for greater efficiency.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 2","pages":"Article 115990"},"PeriodicalIF":7.4,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143520953","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 : 2025-02-27DOI: 10.1016/j.jece.2025.115944
Samuel Anang , Mona G. Ibrahim , Mahmoud Nasr
While several studies have discussed the performance of downflow hanging sponge (DHS) systems toward industrial wastewater treatment (IWWT), there is still a research gap in exploring the associated profitability scenarios, environmental aspects, and sustainability criteria. The current study elucidated the principles, advantages, and limitations of IWWT by the DHS-based system, giving detailed explanations on the removal mechanisms of heavy metals, dyes, emerging contaminants, and nutrients. The techno-economic analysis revealed profitability indicators of 6.4-year payback period, 819 USD net present value, and 8.9 % internal rate of return from pollutant shadow price, carbon credits, and biogas selling. The life cycle assessment (LCA) observations exhibited minimal impacts on toxicity, eutrophication, acidification, human health, and ecosystem quality at the midpoint/endpoint hierarchy levels. The proposed DHS-based plant could fulfil sustainable development goals (SDGs), primarily SDG#3 by reducing water-borne disease, SDG#6 by enhancing water availability, SDG#13 by minimizing the carbon footprint issue, and SDG#14 by conserving aquatic environment. This study depicted that the techno-financial analysis and LCA tools could be integrated with the design and optimization strategies of DHS, offering insights into profitability and holistic management approaches in sustainable wastewater treatment. Because energy utilization for pumps’ operation emerged as a critical factor influencing the overall LCA score, future investigations should employ biogenic sources for electricity supply and apply artificial intelligence techniques to optimize the equipment operation mode that could reduce the expected CO2 emissions. Further studies would also consider expanding the inventory data size, incorporating additional operating factors, and validating the LCA outputs experimentally.
{"title":"Industrial wastewater treatment by downflow hanging sponge system: Techno-economic analysis, life cycle assessment, and sustainable development goals fulfillment","authors":"Samuel Anang , Mona G. Ibrahim , Mahmoud Nasr","doi":"10.1016/j.jece.2025.115944","DOIUrl":"10.1016/j.jece.2025.115944","url":null,"abstract":"<div><div>While several studies have discussed the performance of downflow hanging sponge (DHS) systems toward industrial wastewater treatment (IWWT), there is still a research gap in exploring the associated profitability scenarios, environmental aspects, and sustainability criteria. The current study elucidated the principles, advantages, and limitations of IWWT by the DHS-based system, giving detailed explanations on the removal mechanisms of heavy metals, dyes, emerging contaminants, and nutrients. The techno-economic analysis revealed profitability indicators of 6.4-year payback period, 819 USD net present value, and 8.9 % internal rate of return from pollutant shadow price, carbon credits, and biogas selling. The life cycle assessment (LCA) observations exhibited minimal impacts on toxicity, eutrophication, acidification, human health, and ecosystem quality at the midpoint/endpoint hierarchy levels. The proposed DHS-based plant could fulfil sustainable development goals (SDGs), primarily SDG#3 by reducing water-borne disease, SDG#6 by enhancing water availability, SDG#13 by minimizing the carbon footprint issue, and SDG#14 by conserving aquatic environment. This study depicted that the techno-financial analysis and LCA tools could be integrated with the design and optimization strategies of DHS, offering insights into profitability and holistic management approaches in sustainable wastewater treatment. Because energy utilization for pumps’ operation emerged as a critical factor influencing the overall LCA score, future investigations should employ biogenic sources for electricity supply and apply artificial intelligence techniques to optimize the equipment operation mode that could reduce the expected CO<sub>2</sub> emissions. Further studies would also consider expanding the inventory data size, incorporating additional operating factors, and validating the LCA outputs experimentally.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 2","pages":"Article 115944"},"PeriodicalIF":7.4,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143529715","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 : 2025-02-27DOI: 10.1016/j.jece.2025.115998
Mohammed Ali Dheyab , Azlan Abdul Aziz , Shaymaa Hussein Nowfal , Farhank Saber Braim , Wesam Abdullah , Wasan Hussein Kasasbeh , Mahmood S. Jameel , Saleh T. Alanezi , Mohammad Alrosan , Nazila Oladzadabbasabadi
Silver nanoparticles (AgNPs) have garnered significant attention due to their unique physicochemical properties and broad-spectrum antimicrobial activity, positioning them as pivotal agents in diverse biomedical and environmental applications. However, conventional AgNPs synthesis methods commonly rely on toxic chemicals and high energy consumption, underscoring a critical need for more sustainable and safe alternatives. In response, green synthesis has emerged as a viable alternative, leveraging biological agents such as plant extracts, bacteria, fungi, and algae to produce AgNPs in an eco-friendly and sustainable manner. This review comprehensively examines the diverse biological approaches to AgNPs synthesis, highlighting the advantages of using natural reducing and stabilizing agents that not only mitigate toxicity but also enhance biocompatibility. Characterization techniques such as TEM, SEM, XRD, and FTIR are essential for ensuring that the NPs meet the required standards for their intended medical applications. Additionally, the cytotoxicity of AgNPs is critically evaluated, with a focus on optimizing size, concentration, and surface modifications to minimize adverse effects while maximizing therapeutic potential. The wide-ranging applications of green-synthesized AgNPs, including antimicrobial, anticancer, catalytic, imaging, and drug delivery systems, underscore their versatility and potential to revolutionize medical technologies. Despite promising advancements, green synthesis still faces challenges in scalability, standardization, and ensuring long-term safety in practical applications. Future research must address these challenges to fully harness the potential of green-synthesized AgNPs in medicine and environmental applications. This review aims to provide an in-depth understanding of the current state of green synthesis and its implications for sustainable nanotechnology.
{"title":"Sustainable green synthesis of silver nanoparticles for safer biomedical application","authors":"Mohammed Ali Dheyab , Azlan Abdul Aziz , Shaymaa Hussein Nowfal , Farhank Saber Braim , Wesam Abdullah , Wasan Hussein Kasasbeh , Mahmood S. Jameel , Saleh T. Alanezi , Mohammad Alrosan , Nazila Oladzadabbasabadi","doi":"10.1016/j.jece.2025.115998","DOIUrl":"10.1016/j.jece.2025.115998","url":null,"abstract":"<div><div>Silver nanoparticles (AgNPs) have garnered significant attention due to their unique physicochemical properties and broad-spectrum antimicrobial activity, positioning them as pivotal agents in diverse biomedical and environmental applications. However, conventional AgNPs synthesis methods commonly rely on toxic chemicals and high energy consumption, underscoring a critical need for more sustainable and safe alternatives. In response, green synthesis has emerged as a viable alternative, leveraging biological agents such as plant extracts, bacteria, fungi, and algae to produce AgNPs in an eco-friendly and sustainable manner. This review comprehensively examines the diverse biological approaches to AgNPs synthesis, highlighting the advantages of using natural reducing and stabilizing agents that not only mitigate toxicity but also enhance biocompatibility. Characterization techniques such as TEM, SEM, XRD, and FTIR are essential for ensuring that the NPs meet the required standards for their intended medical applications. Additionally, the cytotoxicity of AgNPs is critically evaluated, with a focus on optimizing size, concentration, and surface modifications to minimize adverse effects while maximizing therapeutic potential. The wide-ranging applications of green-synthesized AgNPs, including antimicrobial, anticancer, catalytic, imaging, and drug delivery systems, underscore their versatility and potential to revolutionize medical technologies. Despite promising advancements, green synthesis still faces challenges in scalability, standardization, and ensuring long-term safety in practical applications. Future research must address these challenges to fully harness the potential of green-synthesized AgNPs in medicine and environmental applications. This review aims to provide an in-depth understanding of the current state of green synthesis and its implications for sustainable nanotechnology.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 2","pages":"Article 115998"},"PeriodicalIF":7.4,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143520955","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 : 2025-02-27DOI: 10.1016/j.jece.2025.115705
Zhenzhen Xue, Xu Zhu, Xinyue Zhang, Ning Ma, Alaa S. Abd-El-Aziz
Global warming and climate change have led to the development of technologies for reducing and recycling CO2 emissions and the establishment of environmentally friendly fuel systems. Polyoxymethylene dimethyl ethers (PODEn), a highly promising renewable oxygenated synthetic fuel, can efficiently improve engine combustion performance and significantly reduce exhaust emissions as diesel blending components or substitutes. In previous, the synthesis of PODEn mainly used indirect methods, also known as two-step synthesis, which include the synthesis of methylal and formaldehyde from methanol, followed by acetalization reaction of methylal/methanol with formaldehyde catalyzed by acid catalysts to yield the PODEn. Recently, some emerging methods involve the use of bifunctional catalysts and tandem catalytic technology can achieve one-step production of PODEn. The technological development of CO2 hydrogenation/reduction to methanol and directly coupling to synthesis PODEn has made the production of PODEn cleaner and more sustainable. In this review, firstly, indirect reaction route and diversified direct pathways are summarized and compared in terms of reactant sources, process flow, and energy evaluation. Furthermore, centered around catalytic reactions, a specific discussion is made on the latest progress in the chemical reactions, catalytic activity, structure-activity relationships, and reaction mechanisms of different routes for synthesizing PODEn. The systematic analysis of the research progress, existing challenges, and future trends of PODEn will provide possible directions for future research, especially in catalyst design, and provide new perspectives and insights for the industrial production of PODEn.
{"title":"A Comprehensive Review on the production of Polyoxymethylene dimethyl ethers as alternative synthetic fuel: From conventional indirect methodologies to sustainable direct routes","authors":"Zhenzhen Xue, Xu Zhu, Xinyue Zhang, Ning Ma, Alaa S. Abd-El-Aziz","doi":"10.1016/j.jece.2025.115705","DOIUrl":"10.1016/j.jece.2025.115705","url":null,"abstract":"<div><div>Global warming and climate change have led to the development of technologies for reducing and recycling CO<sub>2</sub> emissions and the establishment of environmentally friendly fuel systems. Polyoxymethylene dimethyl ethers (PODE<sub>n</sub>), a highly promising renewable oxygenated synthetic fuel, can efficiently improve engine combustion performance and significantly reduce exhaust emissions as diesel blending components or substitutes. In previous, the synthesis of PODE<sub>n</sub> mainly used indirect methods, also known as two-step synthesis, which include the synthesis of methylal and formaldehyde from methanol, followed by acetalization reaction of methylal/methanol with formaldehyde catalyzed by acid catalysts to yield the PODE<sub>n</sub>. Recently, some emerging methods involve the use of bifunctional catalysts and tandem catalytic technology can achieve one-step production of PODEn. The technological development of CO<sub>2</sub> hydrogenation/reduction to methanol and directly coupling to synthesis PODEn has made the production of PODEn cleaner and more sustainable. In this review, firstly, indirect reaction route and diversified direct pathways are summarized and compared in terms of reactant sources, process flow, and energy evaluation. Furthermore, centered around catalytic reactions, a specific discussion is made on the latest progress in the chemical reactions, catalytic activity, structure-activity relationships, and reaction mechanisms of different routes for synthesizing PODEn. The systematic analysis of the research progress, existing challenges, and future trends of PODE<sub>n</sub> will provide possible directions for future research, especially in catalyst design, and provide new perspectives and insights for the industrial production of PODE<sub>n</sub>.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 2","pages":"Article 115705"},"PeriodicalIF":7.4,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143551150","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 integration of 2D materials with metal oxides has emerged as a promising strategy to enhance gas sensing properties, offering significant improvements in sensitivity, selectivity, and response times. This review thus critically discusses the improvements on the gas sensor technologies enabled by integration of 2D materials like MoS2, g-C3N4, Mxene, rGO, CNT, PANI and Black Phosphorus into different metal oxide materials. Several synthesis techniques such as sol-gel process, hydrothermal process, chemical vapour deposition, sputtering and electrospinning have been presented with emphasis on their effects sensor characteristics. Creating heterojunctions and utilizing properties of 2D materials in the structure of the composite sensors enables them to display a high sensitivity to gas molecules, including their low concentrations and ambient temperature. These hybrid nanostructures offer improved surface area, active sites, and electronic properties, enabling the detection of low gas concentrations at room temperature. This paper offers a background for the current state, emerging prospects, and obstacles, as well as future advances regarding hybrid nanostructures, demonstrating the great opportunity they offer in the field of gas sensors for environmental and health concerns, and safety and industrial applications. The findings reveal their superior performance over conventional sensors, addressing key challenges in the field.
{"title":"Unveiling the impact of 2-D materials on the gas sensing properties of metal oxides: A review","authors":"Sakshi Bisht , Neeraj Dhariwal , Preety Yadav , Meenu Chahar , Devender Singh , Vinod Kumar","doi":"10.1016/j.jece.2025.115980","DOIUrl":"10.1016/j.jece.2025.115980","url":null,"abstract":"<div><div>The integration of 2D materials with metal oxides has emerged as a promising strategy to enhance gas sensing properties, offering significant improvements in sensitivity, selectivity, and response times. This review thus critically discusses the improvements on the gas sensor technologies enabled by integration of 2D materials like MoS<sub>2</sub>, g-C<sub>3</sub>N<sub>4</sub>, Mxene, rGO, CNT, PANI and Black Phosphorus into different metal oxide materials. Several synthesis techniques such as sol-gel process, hydrothermal process, chemical vapour deposition, sputtering and electrospinning have been presented with emphasis on their effects sensor characteristics. Creating heterojunctions and utilizing properties of 2D materials in the structure of the composite sensors enables them to display a high sensitivity to gas molecules, including their low concentrations and ambient temperature. These hybrid nanostructures offer improved surface area, active sites, and electronic properties, enabling the detection of low gas concentrations at room temperature. This paper offers a background for the current state, emerging prospects, and obstacles, as well as future advances regarding hybrid nanostructures, demonstrating the great opportunity they offer in the field of gas sensors for environmental and health concerns, and safety and industrial applications. The findings reveal their superior performance over conventional sensors, addressing key challenges in the field.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 2","pages":"Article 115980"},"PeriodicalIF":7.4,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511832","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 : 2025-02-26DOI: 10.1016/j.jece.2025.115986
Yazan Abuhasheesh , Aya Ghazal , Doris Ying Ying Tang , Fawzi Banat , Shadi W. Hasan , Pau Loke Show
Microalgae-derived materials as an adsorbent for wastewater treatment have garnered attention due to their great remediation ability and contribution toward circular bioeconomy. Microalgal biomass can be converted to different materials, including biochar and nanoparticles (NPs), with enhanced properties and efficiency for removing various pollutants from wastewater. In addition, the produced biomass is a source of several high-value products (HVPs) that can generate bioproducts via biorefinery, improving environmental sustainability. This review focuses on distinct green methods for enhancing microalgae-based processes. It covers the recent advances in using different microalgae-derived materials as an advanced microalgae-based approach to wastewater treatment. Furthermore, it delves into the use of ionic liquids (ILs) and deep eutectic solvents (DESs) as green solvents for enhanced and sustainable extraction of HVPs from microalgal biomass. The review also highlights the role of synthetic biology and genetic engineering as a pivotal approach in boosting microalgae’s properties and performance in different aspects. The challenges and future perspectives related to these green approaches are discussed. Further research is required to improve the derived materials' preparation and modification methods and explore more green solvents and systems of better efficacy and cost-effectiveness.
{"title":"Green strategies for enhanced microalgae processes: Leveraging bio-derived adsorbents, green solvents, and synthetic biology","authors":"Yazan Abuhasheesh , Aya Ghazal , Doris Ying Ying Tang , Fawzi Banat , Shadi W. Hasan , Pau Loke Show","doi":"10.1016/j.jece.2025.115986","DOIUrl":"10.1016/j.jece.2025.115986","url":null,"abstract":"<div><div>Microalgae-derived materials as an adsorbent for wastewater treatment have garnered attention due to their great remediation ability and contribution toward circular bioeconomy. Microalgal biomass can be converted to different materials, including biochar and nanoparticles (NPs), with enhanced properties and efficiency for removing various pollutants from wastewater. In addition, the produced biomass is a source of several high-value products (HVPs) that can generate bioproducts via biorefinery, improving environmental sustainability. This review focuses on distinct green methods for enhancing microalgae-based processes. It covers the recent advances in using different microalgae-derived materials as an advanced microalgae-based approach to wastewater treatment. Furthermore, it delves into the use of ionic liquids (ILs) and deep eutectic solvents (DESs) as green solvents for enhanced and sustainable extraction of HVPs from microalgal biomass. The review also highlights the role of synthetic biology and genetic engineering as a pivotal approach in boosting microalgae’s properties and performance in different aspects. The challenges and future perspectives related to these green approaches are discussed. Further research is required to improve the derived materials' preparation and modification methods and explore more green solvents and systems of better efficacy and cost-effectiveness.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 2","pages":"Article 115986"},"PeriodicalIF":7.4,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143551864","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 : 2025-02-25DOI: 10.1016/j.jece.2025.115939
Jinquan Wen , Guihua Liu , Tiangui Qi , Qiusheng Zhou , Zhihong Peng , Leiting Shen , Yilin Wang , Zhiqiang Shi , Jiaping Zhao
Secondary aluminum dross (SAD) is a hazardous waste generated from aluminum electrolytes, processing, and regeneration. To comprehensively utilize SAD, this review critically evaluated various approaches to transforming SAD into value-added products, reaction mechanisms and treatments of harmful elements. The changeable composition and inhomogeneous phases of SAD were clearly identified, leading to the low extraction efficiency of alumina, the poor quality of alumina-bearing materials and difficult operation in practice. Reaction mechanism of Al, AlN, α-Al2O3 and salts has been carefully summarized. The aluminum-bearing substances embedded by Al2O3 layer or Al(OH)3 layer notably reduced the reaction efficiency. The mutually embedded phases and the rich bubbles in the aqueous solution notably changed the reaction behavior of the active aluminum-bearing substances and salts. Afterwards, technologies for comprehensive utilization of SAD were summarized according to pyrometallurgy, hydrometallurgy and combination of pyro/hydrometallurgy. Calcium aluminate and sodium aluminate by roasting process, preparation of alumina-bearing materials after wet-pretreatment for impurity removal, and production of alumina and water purificant from combination of pyro-hydrometallurgy were further discussed. In addition, harmful gases, detrimental ions (F-, Cl- and NH4+), and salts in alumina-bearing materials all limited SAD utilization owing to the environmental risk. With the integration of safety, efficiency and performance, economical comprehensive utilization of SAD was proposed by integrating alumina production, industrial ceramics, and cements on the basis of aluminum industry chain. The bottleneck of environmental risk and roadmap of SAD utilization were finally provided for the safe comprehensive utilization of SAD.
{"title":"Safe comprehensive utilization of the hazardous secondary aluminum dross: Mechanism and technology","authors":"Jinquan Wen , Guihua Liu , Tiangui Qi , Qiusheng Zhou , Zhihong Peng , Leiting Shen , Yilin Wang , Zhiqiang Shi , Jiaping Zhao","doi":"10.1016/j.jece.2025.115939","DOIUrl":"10.1016/j.jece.2025.115939","url":null,"abstract":"<div><div>Secondary aluminum dross (SAD) is a hazardous waste generated from aluminum electrolytes, processing, and regeneration. To comprehensively utilize SAD, this review critically evaluated various approaches to transforming SAD into value-added products, reaction mechanisms and treatments of harmful elements. The changeable composition and inhomogeneous phases of SAD were clearly identified, leading to the low extraction efficiency of alumina, the poor quality of alumina-bearing materials and difficult operation in practice. Reaction mechanism of Al, AlN, α-Al<sub>2</sub>O<sub>3</sub> and salts has been carefully summarized. The aluminum-bearing substances embedded by Al<sub>2</sub>O<sub>3</sub> layer or Al(OH)<sub>3</sub> layer notably reduced the reaction efficiency. The mutually embedded phases and the rich bubbles in the aqueous solution notably changed the reaction behavior of the active aluminum-bearing substances and salts. Afterwards, technologies for comprehensive utilization of SAD were summarized according to pyrometallurgy, hydrometallurgy and combination of pyro/hydrometallurgy. Calcium aluminate and sodium aluminate by roasting process, preparation of alumina-bearing materials after wet-pretreatment for impurity removal, and production of alumina and water purificant from combination of pyro-hydrometallurgy were further discussed. In addition, harmful gases, detrimental ions (F<sup>-</sup>, Cl<sup>-</sup> and NH<sub>4</sub><sup>+</sup>), and salts in alumina-bearing materials all limited SAD utilization owing to the environmental risk. With the integration of safety, efficiency and performance, economical comprehensive utilization of SAD was proposed by integrating alumina production, industrial ceramics, and cements on the basis of aluminum industry chain. The bottleneck of environmental risk and roadmap of SAD utilization were finally provided for the safe comprehensive utilization of SAD.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 2","pages":"Article 115939"},"PeriodicalIF":7.4,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143520954","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 : 2025-02-25DOI: 10.1016/j.jece.2025.115962
Jing Yang , Ruihao Yang , Chunhua He , Changwen Xu , Luyao Xu , Zhen-Hu Hu , Wei Wang
Ammonia nitrogen (-N/NH3-N) is a widespread pollutant in aquatic environments, leading to oxygen depletion and eutrophication, and posing risks to ecosystems and human health. Traditional biological and physicochemical methods for the treatment of ammonia nitrogen wastewater face challenges such as long startup times, high sludge production, and secondary pollution. In contrast, photocatalysis, particularly with titanium dioxide (TiO2), offers a promising alternative due to high efficiency, low energy consumption, and environmental compatibility. However, the limited utilization of visible light, rapid electron-hole recombination, and challenges with catalyst recovery restrict the practical application of TiO2-based photocatalysts. This review explores recent advances in the modification of TiO2 to improve the efficiency removal of ammonia nitrogen, including ion doping, surface sensitization, heterojunction formation, and material loading. Furthermore, the paper highlights the emerging strategy of intimate coupling photocatalysis and biodegradation (ICPB), a synergistic approach that harnesses the strengths of both processes, exploring its advantages and potential in enhancing pollutant removal. This coupling not only enhances the removal efficiency of ammonia nitrogen but also mitigates the drawbacks of each individual method, offering a more robust and energy-efficient solution. By analyzing the mechanisms, limitations, and future research directions of TiO2-based photocatalysts, this review provides critical insights into the development of effective ammonium nitrogen treatment strategies, paving the way for sustainable water remediation and wastewater treatment technologies.
{"title":"Novel insights into ammonia nitrogen removal: TiO2-based photocatalysts and potential of intimate coupling biodegradation","authors":"Jing Yang , Ruihao Yang , Chunhua He , Changwen Xu , Luyao Xu , Zhen-Hu Hu , Wei Wang","doi":"10.1016/j.jece.2025.115962","DOIUrl":"10.1016/j.jece.2025.115962","url":null,"abstract":"<div><div>Ammonia nitrogen (<span><math><msubsup><mrow><mtext>NH</mtext></mrow><mrow><mn>4</mn></mrow><mrow><mo>+</mo></mrow></msubsup></math></span>-N/NH<sub>3</sub>-N) is a widespread pollutant in aquatic environments, leading to oxygen depletion and eutrophication, and posing risks to ecosystems and human health. Traditional biological and physicochemical methods for the treatment of ammonia nitrogen wastewater face challenges such as long startup times, high sludge production, and secondary pollution. In contrast, photocatalysis, particularly with titanium dioxide (TiO<sub>2</sub>), offers a promising alternative due to high efficiency, low energy consumption, and environmental compatibility. However, the limited utilization of visible light, rapid electron-hole recombination, and challenges with catalyst recovery restrict the practical application of TiO<sub>2</sub>-based photocatalysts. This review explores recent advances in the modification of TiO<sub>2</sub> to improve the efficiency removal of ammonia nitrogen, including ion doping, surface sensitization, heterojunction formation, and material loading. Furthermore, the paper highlights the emerging strategy of intimate coupling photocatalysis and biodegradation (ICPB), a synergistic approach that harnesses the strengths of both processes, exploring its advantages and potential in enhancing pollutant removal. This coupling not only enhances the removal efficiency of ammonia nitrogen but also mitigates the drawbacks of each individual method, offering a more robust and energy-efficient solution. By analyzing the mechanisms, limitations, and future research directions of TiO<sub>2</sub>-based photocatalysts, this review provides critical insights into the development of effective ammonium nitrogen treatment strategies, paving the way for sustainable water remediation and wastewater treatment technologies.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 2","pages":"Article 115962"},"PeriodicalIF":7.4,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143508371","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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