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Sustainable green synthesis of silver nanoparticles for safer biomedical application
IF 7.4 2区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2025-02-27 DOI: 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 ,&nbsp;Azlan Abdul Aziz ,&nbsp;Shaymaa Hussein Nowfal ,&nbsp;Farhank Saber Braim ,&nbsp;Wesam Abdullah ,&nbsp;Wasan Hussein Kasasbeh ,&nbsp;Mahmood S. Jameel ,&nbsp;Saleh T. Alanezi ,&nbsp;Mohammad Alrosan ,&nbsp;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}
引用次数: 0
A Comprehensive Review on the production of Polyoxymethylene dimethyl ethers as alternative synthetic fuel: From conventional indirect methodologies to sustainable direct routes
IF 7.4 2区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2025-02-27 DOI: 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,&nbsp;Xu Zhu,&nbsp;Xinyue Zhang,&nbsp;Ning Ma,&nbsp;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}
引用次数: 0
Unveiling the impact of 2-D materials on the gas sensing properties of metal oxides: A review
IF 7.4 2区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2025-02-26 DOI: 10.1016/j.jece.2025.115980
Sakshi Bisht , Neeraj Dhariwal , Preety Yadav , Meenu Chahar , Devender Singh , Vinod Kumar
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 ,&nbsp;Neeraj Dhariwal ,&nbsp;Preety Yadav ,&nbsp;Meenu Chahar ,&nbsp;Devender Singh ,&nbsp;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}
引用次数: 0
Green strategies for enhanced microalgae processes: Leveraging bio-derived adsorbents, green solvents, and synthetic biology
IF 7.4 2区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2025-02-26 DOI: 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.
微藻衍生材料作为废水处理的吸附剂,因其巨大的修复能力和对循环生物经济的贡献而备受关注。微藻生物质可转化为不同的材料,包括生物炭和纳米颗粒(NPs),具有更强的性能和效率,可去除废水中的各种污染物。此外,生产出的生物质是多种高价值产品(HVPs)的来源,可通过生物精炼产生生物产品,改善环境的可持续性。本综述重点介绍了增强微藻工艺的独特绿色方法。它涵盖了使用不同微藻衍生材料作为基于微藻的先进废水处理方法的最新进展。此外,它还深入探讨了使用离子液体(IL)和深共晶溶剂(DES)作为绿色溶剂从微藻生物质中增强和可持续提取 HVPs 的方法。综述还强调了合成生物学和基因工程作为一种关键方法在提高微藻各方面特性和性能中的作用。还讨论了与这些绿色方法相关的挑战和未来展望。需要进一步开展研究,以改进衍生材料的制备和改性方法,并探索更多具有更好功效和成本效益的绿色溶剂和系统。
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引用次数: 0
Safe comprehensive utilization of the hazardous secondary aluminum dross: Mechanism and technology
IF 7.4 2区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2025-02-25 DOI: 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 ,&nbsp;Guihua Liu ,&nbsp;Tiangui Qi ,&nbsp;Qiusheng Zhou ,&nbsp;Zhihong Peng ,&nbsp;Leiting Shen ,&nbsp;Yilin Wang ,&nbsp;Zhiqiang Shi ,&nbsp;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}
引用次数: 0
Novel insights into ammonia nitrogen removal: TiO2-based photocatalysts and potential of intimate coupling biodegradation
IF 7.4 2区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2025-02-25 DOI: 10.1016/j.jece.2025.115962
Jing Yang , Ruihao Yang , Chunhua He , Changwen Xu , Luyao Xu , Zhen-Hu Hu , Wei Wang
Ammonia nitrogen (NH4+-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 ,&nbsp;Ruihao Yang ,&nbsp;Chunhua He ,&nbsp;Changwen Xu ,&nbsp;Luyao Xu ,&nbsp;Zhen-Hu Hu ,&nbsp;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}
引用次数: 0
Unveiling the photocatalytic potential of mesoporous carbon nitride in environmental applications: Properties, synthesis and doping strategies
IF 7.4 2区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2025-02-24 DOI: 10.1016/j.jece.2025.115945
Jyoti Prakash Ray, Ragavan Chandrasekar, Jeevanantham Sathasivam, Selvaraju Narayanasamy
Graphitic carbon nitride (in simple terms, g-C3N4) is a metal-free semiconductor polymer material with many properties, alike graphene, and having a composition of carbon and nitrogen with some hydrogen impurity in its structure. However, unlike graphene, g-C3N4 possesses an intermediate energy gap between the valence and conduction band. High thermal and chemical stability with a conjugated polymerised geometric arrangement of g-C3N4 enhances its photon harvesting potential, leading to improved photocatalytic oxidation and reduction efficiency. The π-conjugated system in g-C3N4 possesses great potential for tuning the delocalised electrons as well as the intercalation of foreign structures which synergise the catalytic effects and enhance the redox efficiency by several folds. The tunable optoelectronic properties, HOMO-LUMO positioning and the hybridisation of the molecular orbital between g-C3N4 and dopant molecule expand the horizon of the fate of g-C3N4 polymer in numerous areas as a photocatalyst material with tremendous potential. In this article, the facile synthetic routes for the g-C3N4 synthesis are discussed along with the mechanisms for enhanced catalytic efficiencies of pristine g-C3N4 via various doping, co-doping and heterojunction engineering. Furthermore, the use of machine learning methods for analysis, as well as validation of its exceptional photocatalytic potential, is briefly summarised.
{"title":"Unveiling the photocatalytic potential of mesoporous carbon nitride in environmental applications: Properties, synthesis and doping strategies","authors":"Jyoti Prakash Ray,&nbsp;Ragavan Chandrasekar,&nbsp;Jeevanantham Sathasivam,&nbsp;Selvaraju Narayanasamy","doi":"10.1016/j.jece.2025.115945","DOIUrl":"10.1016/j.jece.2025.115945","url":null,"abstract":"<div><div>Graphitic carbon nitride (in simple terms, g-C<sub>3</sub>N<sub>4</sub>) is a metal-free semiconductor polymer material with many properties, alike graphene, and having a composition of carbon and nitrogen with some hydrogen impurity in its structure. However, unlike graphene, g-C<sub>3</sub>N<sub>4</sub> possesses an intermediate energy gap between the valence and conduction band. High thermal and chemical stability with a conjugated polymerised geometric arrangement of g-C<sub>3</sub>N<sub>4</sub> enhances its photon harvesting potential, leading to improved photocatalytic oxidation and reduction efficiency. The π-conjugated system in g-C<sub>3</sub>N<sub>4</sub> possesses great potential for tuning the delocalised electrons as well as the intercalation of foreign structures which synergise the catalytic effects and enhance the redox efficiency by several folds. The tunable optoelectronic properties, HOMO-LUMO positioning and the hybridisation of the molecular orbital between g-C<sub>3</sub>N<sub>4</sub> and dopant molecule expand the horizon of the fate of g-C<sub>3</sub>N<sub>4</sub> polymer in numerous areas as a photocatalyst material with tremendous potential. In this article, the facile synthetic routes for the g-C<sub>3</sub>N<sub>4</sub> synthesis are discussed along with the mechanisms for enhanced catalytic efficiencies of pristine g-C<sub>3</sub>N<sub>4</sub> via various doping, co-doping and heterojunction engineering. Furthermore, the use of machine learning methods for analysis, as well as validation of its exceptional photocatalytic potential, is briefly summarised.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 2","pages":"Article 115945"},"PeriodicalIF":7.4,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143551808","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}
引用次数: 0
Use of fluorescence for real-time monitoring of contaminants of emerging concern in (waste)water: Perspectives for sensors implementation and process control
IF 7.4 2区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2025-02-21 DOI: 10.1016/j.jece.2025.115916
Filippo Fazzino , Paolo Roccaro , Antonino Di Bella , Erica Gagliano , Federico G.A. Vagliasindi , Gregory V. Korshin
The need to remove ubiquitously occurring contaminants of emerging concern (CEC) from water/wastewater represents a global challenge both in terms of developing efficient technologies and decreasing high energy demands of the water sector. In this context, online monitoring of the occurrence of CEC and their removal in (waste)water facilities play an important role in optimization of treatment processes. Fluorescence spectroscopy is a viable tool for ‘indirect’ CEC monitoring that is based on the correlations between CEC concentrations and those of dissolved organic matter (DOM). Among a wide range of fluorescence indexes have been proposed as surrogate parameters for water treatment applications, those measured at specific pairs of excitation/emission (ex/em) wavelengths can be implemented in commercially available or customized field-deployable fluorescence sensors thus enabling real-time and/or on-site CEC monitoring. This review examined results of the prior studies of ex/em pair options and selects those of them that are most useful for CEC monitoring in natural water environments, lab-/pilot-scale (waste)water treatment processes and ultimately in practical field applications. The approach of fluorescence-based monitoring is convenient for process control and optimization of CEC removal while concurrently saving energy and material demands of engineered (waste)water systems. This review also calls for further research of applications of fluorescence spectroscopy in (waste)water treatment and, more specifically, it provides a detailed workflow developed to select, test, and validate pairs of ex/em coordinates suitable for CEC monitoring in various types of (waste)water treatment processes.
{"title":"Use of fluorescence for real-time monitoring of contaminants of emerging concern in (waste)water: Perspectives for sensors implementation and process control","authors":"Filippo Fazzino ,&nbsp;Paolo Roccaro ,&nbsp;Antonino Di Bella ,&nbsp;Erica Gagliano ,&nbsp;Federico G.A. Vagliasindi ,&nbsp;Gregory V. Korshin","doi":"10.1016/j.jece.2025.115916","DOIUrl":"10.1016/j.jece.2025.115916","url":null,"abstract":"<div><div>The need to remove ubiquitously occurring contaminants of emerging concern (CEC) from water/wastewater represents a global challenge both in terms of developing efficient technologies and decreasing high energy demands of the water sector. In this context, online monitoring of the occurrence of CEC and their removal in (waste)water facilities play an important role in optimization of treatment processes. Fluorescence spectroscopy is a viable tool for ‘indirect’ CEC monitoring that is based on the correlations between CEC concentrations and those of dissolved organic matter (DOM). Among a wide range of fluorescence indexes have been proposed as surrogate parameters for water treatment applications, those measured at specific pairs of excitation/emission (ex/em) wavelengths can be implemented in commercially available or customized field-deployable fluorescence sensors thus enabling real-time and/or on-site CEC monitoring. This review examined results of the prior studies of ex/em pair options and selects those of them that are most useful for CEC monitoring in natural water environments, lab-/pilot-scale (waste)water treatment processes and ultimately in practical field applications. The approach of fluorescence-based monitoring is convenient for process control and optimization of CEC removal while concurrently saving energy and material demands of engineered (waste)water systems. This review also calls for further research of applications of fluorescence spectroscopy in (waste)water treatment and, more specifically, it provides a detailed workflow developed to select, test, and validate pairs of ex/em coordinates suitable for CEC monitoring in various types of (waste)water treatment processes.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 2","pages":"Article 115916"},"PeriodicalIF":7.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143488856","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}
引用次数: 0
A state-of-the-art review focusing on the fabrication technique of activated chitosan-bitumin coal based multifunctional bionanocomposites for industrial wastewater treatment: Production, characterization, and fixed bed column adsorption study
IF 7.4 2区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2025-02-21 DOI: 10.1016/j.jece.2025.115908
Md. Mahmudur Rahman , Md. Ismail Hossain , Bijoy Chandra Ghos , Md. Jasim Uddin , Salah Knani , Md. Waliullah
In this review, the fabrication route of activated chitosan-bitumin coal (AC-BC) multifunctional bionanocomposite for industrial wastewater treatment by using a down-flow fixed-bed column adsorption technique. This is crucial to purify the industrial effluents by developing ecofriendly and cost effective technology before discharging which is usually loaded with several toxicants. Otherwise, they can easily contaminate our food chain resulting in a punitive destruction to the ecology as well as public safety and/or health security. To mitigate this serious environmental issue scientists are trying to develop a much more efficient, economical, and ecofriendly realistic technique for the purification of real-time bulky industrial effluents. While continuous column adsorption technique can be very innovative and beneficial one due to its outstanding features. However, AC-BC based bionanocomposite would be a suitable candidate for its much availability, biodegradability, lower cost, higher efficiency, and outstanding physicochemical, thermomechanical, and morphological properties with sensational adsorption performances. Still there is some difficulties regarding the actual processing of the precursor, the fabrication technique and their application mode for the purification of crude wastewater. Hence, this study will be dedicated by focusing on the significant fabrication techniques and application modes along with the possible synergistic mechanism indicating the chemical adsorption, physical adsorption (multi/monolayer), interparticular diffusion/deep penetration and mathematical modellings for better clarity. By ascertaining gaps that belong to the existing study and providing forthcoming research directions, this critical overview aims to improve the overall fabrication, characterization, application of the AC-BC bionanosorbents in the real-time bulky industrial wastewater for sustainable environmental protection.
{"title":"A state-of-the-art review focusing on the fabrication technique of activated chitosan-bitumin coal based multifunctional bionanocomposites for industrial wastewater treatment: Production, characterization, and fixed bed column adsorption study","authors":"Md. Mahmudur Rahman ,&nbsp;Md. Ismail Hossain ,&nbsp;Bijoy Chandra Ghos ,&nbsp;Md. Jasim Uddin ,&nbsp;Salah Knani ,&nbsp;Md. Waliullah","doi":"10.1016/j.jece.2025.115908","DOIUrl":"10.1016/j.jece.2025.115908","url":null,"abstract":"<div><div>In this review, the fabrication route of activated chitosan-bitumin coal (AC-BC) multifunctional bionanocomposite for industrial wastewater treatment by using a down-flow fixed-bed column adsorption technique. This is crucial to purify the industrial effluents by developing ecofriendly and cost effective technology before discharging which is usually loaded with several toxicants. Otherwise, they can easily contaminate our food chain resulting in a punitive destruction to the ecology as well as public safety and/or health security. To mitigate this serious environmental issue scientists are trying to develop a much more efficient, economical, and ecofriendly realistic technique for the purification of real-time bulky industrial effluents. While continuous column adsorption technique can be very innovative and beneficial one due to its outstanding features. However, AC-BC based bionanocomposite would be a suitable candidate for its much availability, biodegradability, lower cost, higher efficiency, and outstanding physicochemical, thermomechanical, and morphological properties with sensational adsorption performances. Still there is some difficulties regarding the actual processing of the precursor, the fabrication technique and their application mode for the purification of crude wastewater. Hence, this study will be dedicated by focusing on the significant fabrication techniques and application modes along with the possible synergistic mechanism indicating the chemical adsorption, physical adsorption (multi/monolayer), interparticular diffusion/deep penetration and mathematical modellings for better clarity. By ascertaining gaps that belong to the existing study and providing forthcoming research directions, this critical overview aims to improve the overall fabrication, characterization, application of the AC-BC bionanosorbents in the real-time bulky industrial wastewater for sustainable environmental protection.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 2","pages":"Article 115908"},"PeriodicalIF":7.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143479485","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}
引用次数: 0
The three-dimensional electrocatalytic oxidation system for refractory organic wastewater remediations: Mechanisms, electrode material and applications
IF 7.4 2区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2025-02-21 DOI: 10.1016/j.jece.2025.115878
Linjin Li , Yaoze Wang , Guangfei Qu , Ping Lu , Ting Zhang , Jun Wang , Minhua Cheng , Nanqi Ren , Yuanchuan Ren
Three-dimensional electrocatalytic oxidation (3D-ECO) has garnered significant attention in recent years as an advanced wastewater treatment technology. This paper systematically reviews the oxidation mechanisms, key electrode materials and their reactor designs, operational parameters, and specific applications of 3D-ECO. Compared to traditional two-dimensional electrocatalytic oxidation (2D-ECO) systems, 3D-ECO significantly enhances the reaction interface area and mass transfer efficiency by incorporating particle electrodes (PEs), demonstrating superior pollutant removal capabilities. Furthermore, the use of PEs not only reduces energy consumption but also improves treatment efficiency. This paper also explores the importance of composite materials in enhancing electrocatalytic performance and electrode stability, along with an analysis of the key operational parameters affecting system performance. Despite its excellent performance in terms of current density and energy efficiency, high costs and complex operations continue to limit the industrial application of 3D-ECO. To address these challenges, the paper proposes future research directions, including the development of novel electrode materials, reactor designs, machine learning to optimize operating parameters, and the integration of multiple technologies. Through these efforts, 3D-ECO has the potential for broader application, contributing to the sustainable development of wastewater treatment technologies.
{"title":"The three-dimensional electrocatalytic oxidation system for refractory organic wastewater remediations: Mechanisms, electrode material and applications","authors":"Linjin Li ,&nbsp;Yaoze Wang ,&nbsp;Guangfei Qu ,&nbsp;Ping Lu ,&nbsp;Ting Zhang ,&nbsp;Jun Wang ,&nbsp;Minhua Cheng ,&nbsp;Nanqi Ren ,&nbsp;Yuanchuan Ren","doi":"10.1016/j.jece.2025.115878","DOIUrl":"10.1016/j.jece.2025.115878","url":null,"abstract":"<div><div>Three-dimensional electrocatalytic oxidation (3D-ECO) has garnered significant attention in recent years as an advanced wastewater treatment technology. This paper systematically reviews the oxidation mechanisms, key electrode materials and their reactor designs, operational parameters, and specific applications of 3D-ECO. Compared to traditional two-dimensional electrocatalytic oxidation (2D-ECO) systems, 3D-ECO significantly enhances the reaction interface area and mass transfer efficiency by incorporating particle electrodes (PEs), demonstrating superior pollutant removal capabilities. Furthermore, the use of PEs not only reduces energy consumption but also improves treatment efficiency. This paper also explores the importance of composite materials in enhancing electrocatalytic performance and electrode stability, along with an analysis of the key operational parameters affecting system performance. Despite its excellent performance in terms of current density and energy efficiency, high costs and complex operations continue to limit the industrial application of 3D-ECO. To address these challenges, the paper proposes future research directions, including the development of novel electrode materials, reactor designs, machine learning to optimize operating parameters, and the integration of multiple technologies. Through these efforts, 3D-ECO has the potential for broader application, contributing to the sustainable development of wastewater treatment technologies.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 2","pages":"Article 115878"},"PeriodicalIF":7.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474327","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}
引用次数: 0
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Journal of Environmental Chemical Engineering
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