Journal of Environmental Chemical Engineering最新文献_第3页

Silicon nanowires in photocatalytic water treatment: From a critical review to a conceptual band-diagram framework for radical generation and design of Si-based heterostructures 光催化水处理中的硅纳米线：从一个关键的回顾到一个概念带图框架的自由基生成和硅基异质结构的设计

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-29 DOI: 10.1016/j.jece.2026.121486

Alejandra Xochitl Maldonado Pérez , José de Jesús Pérez Bueno

Silicon nanowires (Si_NWs) have emerged as versatile nanostructures that enhance light harvesting and charge carrier dynamics in advanced photocatalytic systems. Originating in photovoltaic research, Si_NWs have high potential for wastewater remediation, particularly for treating persistent organic pollutants (POPs) and emerging contaminants (ECs) that are resistant to conventional methods. This review critically synthesizes the current state of the art in Si_NW-based photocatalysts, highlighting the interplay between synthesis strategies, such as metal-assisted chemical etching (MACE), and structural factors, including doping level, crystalline orientation, and aspect ratio. This review proposes a conceptual design framework based on an effective band-diagram window for radical generation in Si-based photocatalysts. Integrating band energetics, charge-transport constraints, and interfacial barriers (native SiO₂), this work delineates the subset of carrier energies and locations that actually contribute to H₂O₂ and ^•OH formation. This framework is used to reinterpret reported Si_NW/metal and Si_NW/semiconductor heterostructures and to formulate design rules and research priorities for scalable Si_NW-based AOPs. Special attention is given to hybrid junction architectures, including semiconductor–metal and Z-scheme assemblies, which optimize charge separation and broaden the generation of reactive species under visible light irradiation. Key factors affecting photocatalytic performance are systematically discussed and benchmarked through comparative tables and figures, highlighting trends in pollutant degradation efficiencies and rate constants. Ultimately, this review identifies existing knowledge gaps and outlines future directions for integrating Si_NWs into scalable, solar-driven oxidation processes that aim to achieve sustainable water treatment solutions. The insights are for the rational design of next-generation hybrid photocatalysts for the reduction of emerging contaminants.

硅纳米线作为一种多用途的纳米结构，在先进的光催化系统中增强了光捕获和载流子动力学。sinw起源于光伏研究，在废水修复方面具有很高的潜力，特别是在处理传统方法无法处理的持久性有机污染物（POPs）和新出现的污染物（ECs）方面。本文综述了目前基于sinw的光催化剂的研究现状，强调了合成策略（如金属辅助化学蚀刻（MACE））与结构因素（包括掺杂水平、晶体取向和宽高比）之间的相互作用。本文提出了一种基于硅基光催化剂自由基生成有效带图窗口的概念设计框架。结合能带能量学、电荷输运约束和界面势垒（原生SiO₂），这项工作描绘了载流子能量和位置的子集，它们实际上有助于h2o2₂和•OH的形成。该框架用于重新解释已报道的SiNW/金属和SiNW/半导体异质结构，并为可扩展的基于SiNW的AOPs制定设计规则和研究重点。特别关注混合结结构，包括半导体-金属和Z-scheme组件，优化电荷分离并扩大可见光照射下反应物质的产生。通过比较表格和数字系统地讨论了影响光催化性能的关键因素，并对其进行了基准测试，突出了污染物降解效率和速率常数的趋势。最后，本综述确定了现有的知识差距，并概述了将sinw集成到可扩展的太阳能驱动氧化过程中的未来方向，旨在实现可持续的水处理解决方案。这些见解是为减少新出现的污染物的下一代混合光催化剂的合理设计。

{"title":"Silicon nanowires in photocatalytic water treatment: From a critical review to a conceptual band-diagram framework for radical generation and design of Si-based heterostructures","authors":"Alejandra Xochitl Maldonado Pérez , José de Jesús Pérez Bueno","doi":"10.1016/j.jece.2026.121486","DOIUrl":"10.1016/j.jece.2026.121486","url":null,"abstract":"<div><div>Silicon nanowires (Si<sub>NWs</sub>) have emerged as versatile nanostructures that enhance light harvesting and charge carrier dynamics in advanced photocatalytic systems. Originating in photovoltaic research, Si<sub>NWs</sub> have high potential for wastewater remediation, particularly for treating persistent organic pollutants (POPs) and emerging contaminants (ECs) that are resistant to conventional methods. This review critically synthesizes the current state of the art in Si<sub>NW</sub>-based photocatalysts, highlighting the interplay between synthesis strategies, such as metal-assisted chemical etching (MACE), and structural factors, including doping level, crystalline orientation, and aspect ratio. This review proposes a conceptual design framework based on an effective band-diagram window for radical generation in Si-based photocatalysts. Integrating band energetics, charge-transport constraints, and interfacial barriers (native SiO₂), this work delineates the subset of carrier energies and locations that actually contribute to H₂O₂ and <sup>•</sup>OH formation. This framework is used to reinterpret reported Si<sub>NW</sub>/metal and Si<sub>NW</sub>/semiconductor heterostructures and to formulate design rules and research priorities for scalable Si<sub>NW</sub>-based AOPs. Special attention is given to hybrid junction architectures, including semiconductor–metal and Z-scheme assemblies, which optimize charge separation and broaden the generation of reactive species under visible light irradiation. Key factors affecting photocatalytic performance are systematically discussed and benchmarked through comparative tables and figures, highlighting trends in pollutant degradation efficiencies and rate constants. Ultimately, this review identifies existing knowledge gaps and outlines future directions for integrating Si<sub>NWs</sub> into scalable, solar-driven oxidation processes that aim to achieve sustainable water treatment solutions. The insights are for the rational design of next-generation hybrid photocatalysts for the reduction of emerging contaminants.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"14 2","pages":"Article 121486"},"PeriodicalIF":7.2,"publicationDate":"2026-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170282","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

Sources, hazards, and formation mechanisms of organic emissions from crumb rubber modified asphalt: A review 橡胶屑改性沥青有机排放物的来源、危害及形成机制综述

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-29 DOI: 10.1016/j.jece.2026.121444

Jiaqi Tan, Aiqin Shen, Yinchuan Guo, Jinhua Wu, Hongbo Shen, Tianji Zhang

Using waste tire rubber as an asphalt modifier to produce crumb rubber modified asphalt (CRMA) is an important pathway for the reuse of end-of-life tires (ELTs). However, CRMA releases complex and potentially harmful organic compounds during construction, raising environmental and health concerns. To date, a comprehensive review focusing on the chemical composition and formation mechanisms of these organic compounds is still lacking, thereby limiting the development of low-emission CRMA materials. This review compiles 483 organic emission compounds reported in published studies, classifies them systematically based on their molecular structures, analyzes the sources and potential hazards of each category, and recommends representative organic compounds to inform future research. Moreover, under actual construction conditions, the key factors driving emission generation are discussed, the formation mechanisms of specific organic compounds are elucidated, and a minimum reporting set of parameters is proposed to standardize future emission-related studies. This review provides a theoretical foundation for understanding the emission characteristics of CRMA, developing emission control strategies, and advancing green, low-emission material systems.

利用废旧轮胎橡胶作为沥青改性剂生产橡胶屑改性沥青（CRMA）是废旧轮胎再利用的重要途径。然而，CRMA在施工过程中释放出复杂和潜在有害的有机化合物，引发了对环境和健康的担忧。迄今为止，对这些有机化合物的化学组成和形成机制还缺乏全面的研究，从而限制了低排放CRMA材料的发展。本文综述了已发表的483种有机排放化合物，根据其分子结构对其进行了系统分类，分析了每一类化合物的来源和潜在危害，并推荐了具有代表性的有机化合物，为今后的研究提供参考。在实际施工条件下，讨论了驱动排放产生的关键因素，阐明了特定有机化合物的形成机制，并提出了最小报告参数集，以规范未来的排放相关研究。本文综述可为进一步了解CRMA的排放特性，制定排放控制策略，推进绿色低排放材料体系建设提供理论依据。

{"title":"Sources, hazards, and formation mechanisms of organic emissions from crumb rubber modified asphalt: A review","authors":"Jiaqi Tan, Aiqin Shen, Yinchuan Guo, Jinhua Wu, Hongbo Shen, Tianji Zhang","doi":"10.1016/j.jece.2026.121444","DOIUrl":"10.1016/j.jece.2026.121444","url":null,"abstract":"<div><div>Using waste tire rubber as an asphalt modifier to produce crumb rubber modified asphalt (CRMA) is an important pathway for the reuse of end-of-life tires (ELTs). However, CRMA releases complex and potentially harmful organic compounds during construction, raising environmental and health concerns. To date, a comprehensive review focusing on the chemical composition and formation mechanisms of these organic compounds is still lacking, thereby limiting the development of low-emission CRMA materials. This review compiles 483 organic emission compounds reported in published studies, classifies them systematically based on their molecular structures, analyzes the sources and potential hazards of each category, and recommends representative organic compounds to inform future research. Moreover, under actual construction conditions, the key factors driving emission generation are discussed, the formation mechanisms of specific organic compounds are elucidated, and a minimum reporting set of parameters is proposed to standardize future emission-related studies. This review provides a theoretical foundation for understanding the emission characteristics of CRMA, developing emission control strategies, and advancing green, low-emission material systems.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"14 2","pages":"Article 121444"},"PeriodicalIF":7.2,"publicationDate":"2026-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170198","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

Manganese-based cathodes for aqueous zinc-ion batteries: Mechanistic insights and rational design strategies 水锌离子电池的锰基阴极：机械的见解和合理的设计策略

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-27 DOI: 10.1016/j.jece.2026.121461

Zhouxiao Wang , Zhengmin Zhong , Lisan Fu , Pengze Yang , Jinkai Liu , Qiliang Pan

Aqueous zinc-ion batteries (AZIBs) are promising for large-scale energy storage owing to their advantages of high theoretical capacity, low cost, and high safety. Manganese-based materials, characterized by rich reserves, low cost, multiple valence states, and relatively high operating potential, represent a very promising cathode material for AZIBs. This article reviews the latest advances in manganese-based cathode materials for AZIBs from a mechanistic perspective, elucidating the evolution of energy storage mechanisms. Representative manganese-based materials, including MnO₂, Mn₂O₃, Mn₃O₄, ZnMn₂O₄, and manganese composite with other materials, are discussed in terms of their structural characteristics, dominant reaction pathways, and electrochemical behaviors. To address challenges of manganese dissolution, structural instability, and poor conductivity, key modification strategies (elemental doping, surface coating, structural design, and electrolyte optimization) are systematically reviewed, with a focus on their ability to enhance cycling stability and rate performance. Finally, this review outlines future research directions of manganese-based materials as AZIBs cathodes, providing a reference for developing high-performance AZIBs.

水溶液锌离子电池具有理论容量大、成本低、安全性高等优点，在大规模储能领域具有广阔的应用前景。锰基材料具有储量丰富、成本低、价态多、操作潜力高等特点，是极具发展前景的azib正极材料。本文从机理角度综述了锰基azib正极材料的最新进展，阐述了其储能机理的演变。讨论了锰基材料的结构特征、主要反应途径和电化学行为，包括MnO2、Mn2O3、Mn3O4、ZnMn2O4和锰基复合材料。为了解决锰溶解、结构不稳定和电导率差的挑战，系统地回顾了关键的改性策略（元素掺杂、表面涂层、结构设计和电解质优化），重点介绍了它们提高循环稳定性和速率性能的能力。最后，综述了锰基材料作为azib阴极的未来研究方向，为开发高性能azib提供参考。

{"title":"Manganese-based cathodes for aqueous zinc-ion batteries: Mechanistic insights and rational design strategies","authors":"Zhouxiao Wang , Zhengmin Zhong , Lisan Fu , Pengze Yang , Jinkai Liu , Qiliang Pan","doi":"10.1016/j.jece.2026.121461","DOIUrl":"10.1016/j.jece.2026.121461","url":null,"abstract":"<div><div>Aqueous zinc-ion batteries (AZIBs) are promising for large-scale energy storage owing to their advantages of high theoretical capacity, low cost, and high safety. Manganese-based materials, characterized by rich reserves, low cost, multiple valence states, and relatively high operating potential, represent a very promising cathode material for AZIBs. This article reviews the latest advances in manganese-based cathode materials for AZIBs from a mechanistic perspective, elucidating the evolution of energy storage mechanisms. Representative manganese-based materials, including MnO<sub>2</sub>, Mn<sub>2</sub>O<sub>3</sub>, Mn<sub>3</sub>O<sub>4</sub>, ZnMn<sub>2</sub>O<sub>4</sub>, and manganese composite with other materials, are discussed in terms of their structural characteristics, dominant reaction pathways, and electrochemical behaviors. To address challenges of manganese dissolution, structural instability, and poor conductivity, key modification strategies (elemental doping, surface coating, structural design, and electrolyte optimization) are systematically reviewed, with a focus on their ability to enhance cycling stability and rate performance. Finally, this review outlines future research directions of manganese-based materials as AZIBs cathodes, providing a reference for developing high-performance AZIBs.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"14 2","pages":"Article 121461"},"PeriodicalIF":7.2,"publicationDate":"2026-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074880","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

Electrodialysis for sustainable water desalination: Principles, applications, challenges, and future directions 电渗析用于可持续海水淡化：原理、应用、挑战和未来方向

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-27 DOI: 10.1016/j.jece.2026.121466

Subhan Mahmood , Numan Mahmood , Muhammad Usman Liaquat , Faizan Ikhlaq , Hamza Shehzad , Shun Yao

Freshwater scarcity, driven by population growth, urbanization, industrialization, and climate change, has intensified the need for alternative water sources, including desalination. Among emerging solutions, electrodialysis (ED) has gained prominence as an energy-efficient, renewable, and chemical-free electrochemical separation technology for desalination. By leveraging ion-exchange membranes and an applied electric field, ED effectively removes salts and ions from water without requiring high-pressure or thermal energy inputs, making it particularly suitable for low-to-medium salinity water treatment. Recent advancements, such as anti-fouling membranes and integration with renewable energy systems (e.g., photovoltaics), have further enhanced the economic viability and environmental sustainability of ED. Additionally, its modular and scalable design enables decentralized applications, expanding water access to underserved regions. Beyond desalination, ED supports the circular economy by facilitating nutrient and metal recovery from wastewater, aligning with sustainable development goals (SDGs). While challenges like membrane fouling and costs persist, innovations such as hybrid systems and digital technologies are unlocking new opportunities, reinforcing the role of ED as a key solution for global water scarcity and resource optimization. This review explores historical evolution, current applications, economic and environmental prospects of ED as a sustainable desalination technology in water management in recent years, with the aim of providing a comprehensive reference for researchers in desalination and electrochemical separation.

人口增长、城市化、工业化和气候变化导致的淡水短缺加剧了对包括海水淡化在内的替代水源的需求。在新兴的解决方案中，电渗析（ED）作为一种节能、可再生、无化学物质的海水淡化电化学分离技术而受到重视。通过利用离子交换膜和外加电场，ED可以有效地去除水中的盐和离子，而不需要高压或热能输入，因此特别适用于低至中等盐度的水处理。最近的进步，如防污染膜和与可再生能源系统（如光伏）的集成，进一步提高了ED的经济可行性和环境可持续性。此外，其模块化和可扩展的设计使分散式应用成为可能，扩大了供水不足地区的供水。除海水淡化外，ED还通过促进废水中营养物质和金属的回收来支持循环经济，与可持续发展目标（sdg）保持一致。尽管膜污染和成本等挑战依然存在，但混合系统和数字技术等创新正在创造新的机遇，强化了ED作为全球水资源短缺和资源优化关键解决方案的作用。本文综述了近年来ED作为一种可持续的海水淡化技术在水管理中的历史演变、应用现状、经济和环境前景，旨在为海水淡化和电化学分离的研究人员提供全面的参考。

{"title":"Electrodialysis for sustainable water desalination: Principles, applications, challenges, and future directions","authors":"Subhan Mahmood , Numan Mahmood , Muhammad Usman Liaquat , Faizan Ikhlaq , Hamza Shehzad , Shun Yao","doi":"10.1016/j.jece.2026.121466","DOIUrl":"10.1016/j.jece.2026.121466","url":null,"abstract":"<div><div>Freshwater scarcity, driven by population growth, urbanization, industrialization, and climate change, has intensified the need for alternative water sources, including desalination. Among emerging solutions, electrodialysis (ED) has gained prominence as an energy-efficient, renewable, and chemical-free electrochemical separation technology for desalination. By leveraging ion-exchange membranes and an applied electric field, ED effectively removes salts and ions from water without requiring high-pressure or thermal energy inputs, making it particularly suitable for low-to-medium salinity water treatment. Recent advancements, such as anti-fouling membranes and integration with renewable energy systems (e.g., photovoltaics), have further enhanced the economic viability and environmental sustainability of ED. Additionally, its modular and scalable design enables decentralized applications, expanding water access to underserved regions. Beyond desalination, ED supports the circular economy by facilitating nutrient and metal recovery from wastewater, aligning with sustainable development goals (SDGs). While challenges like membrane fouling and costs persist, innovations such as hybrid systems and digital technologies are unlocking new opportunities, reinforcing the role of ED as a key solution for global water scarcity and resource optimization. This review explores historical evolution, current applications, economic and environmental prospects of ED as a sustainable desalination technology in water management in recent years, with the aim of providing a comprehensive reference for researchers in desalination and electrochemical separation.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"14 2","pages":"Article 121466"},"PeriodicalIF":7.2,"publicationDate":"2026-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074802","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

Synergistic pathways of composting and hydrothermal carbonization for livestock manure valorization: From molecular mechanisms to carbon-neutral applications 堆肥和热液碳化对畜禽粪便增值的协同途径：从分子机制到碳中和应用

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-27 DOI: 10.1016/j.jece.2026.121464

Dongming Liu , Shuhan Wang , Liang Zhao , Wenbing Tan

The rapid expansion of global livestock production has rendered manure pollution a critical threat to environmental quality and public health. Achieving high-efficiency manure valorization while simultaneously mitigating pollution and maximizing resource recovery remains a central challenge in environmental engineering and sustainable agriculture. This review critically examines the synergistic mechanisms and application potential of composting and hydrothermal carbonization (HTC), two mainstream manure treatment technologies. Conventional composting efficiently transforms organic matter into humic acids (>30 % content) but is limited by prolonged processing (30–60 days) and substantial greenhouse gas emissions (0.3–0.8 kg N₂O/t). HTC offers rapid conversion (4–6 h) and high-energy hydrochar (18–25 MJ/kg), yet is hindered by severe process water contamination (COD: 20,000–80,000 mg/L). Multi-scale analyses reveal that: (i) compost-derived humic functional groups (-COOH, -OH) enhance HTC reactivity at the molecular level; (ii) coupling “HTC pretreatment + composting post-treatment” increases overall efficiency by 40 % and reduces the carbon footprint to 15 kg CO₂-eq/t; and (iii) intelligent process control enables nitrogen and phosphorus recovery rates above 90 %. The proposed “pollution control–resource recovery–carbon neutrality” framework substantially lowers environmental risks while enabling simultaneous energy recovery and nutrient recycling. This work provides a comprehensive mechanistic and process-level foundation for next-generation manure management strategies. Future research should prioritize AI-driven process optimization and the establishment of biochar carbon credit mechanisms to accelerate large-scale deployment under dual-carbon targets.

全球畜牧业生产的迅速扩大使粪便污染对环境质量和公众健康构成严重威胁。在减少污染和最大限度地回收资源的同时实现高效的粪肥增值仍然是环境工程和可持续农业的核心挑战。本文综述了堆肥和水热碳化（HTC）这两种主流粪便处理技术的协同作用机制和应用潜力。传统的堆肥有效地将有机物转化为腐植酸（>；30 %含量），但由于处理时间长（30 - 60天）和大量温室气体排放（0.3-0.8 kg N₂O/t）而受到限制。HTC提供快速转化（4-6 h）和高能碳氢化合物（18-25 MJ/kg），但受到严重的工艺水污染（COD: 20,000-80,000 mg/L）的阻碍。多尺度分析表明：(1)堆肥衍生腐殖质官能团（-COOH, -OH）在分子水平上增强了HTC反应性；（ii）结合“HTC预处理+ 堆肥后处理”，将整体效率提高40 %，并将碳足迹减少到15 kg CO₂-eq/t；(3)智能过程控制使氮磷回收率达到90% %以上。提出的“污染控制-资源回收-碳中和”框架大大降低了环境风险，同时实现了能源回收和养分循环。这项工作为下一代粪便管理策略提供了全面的机制和工艺基础。未来的研究应优先考虑人工智能驱动的流程优化和生物炭碳信用机制的建立，以加速双碳目标下的大规模部署。

{"title":"Synergistic pathways of composting and hydrothermal carbonization for livestock manure valorization: From molecular mechanisms to carbon-neutral applications","authors":"Dongming Liu , Shuhan Wang , Liang Zhao , Wenbing Tan","doi":"10.1016/j.jece.2026.121464","DOIUrl":"10.1016/j.jece.2026.121464","url":null,"abstract":"<div><div>The rapid expansion of global livestock production has rendered manure pollution a critical threat to environmental quality and public health. Achieving high-efficiency manure valorization while simultaneously mitigating pollution and maximizing resource recovery remains a central challenge in environmental engineering and sustainable agriculture. This review critically examines the synergistic mechanisms and application potential of composting and hydrothermal carbonization (HTC), two mainstream manure treatment technologies. Conventional composting efficiently transforms organic matter into humic acids (>30 % content) but is limited by prolonged processing (30–60 days) and substantial greenhouse gas emissions (0.3–0.8 kg N₂O/t). HTC offers rapid conversion (4–6 h) and high-energy hydrochar (18–25 MJ/kg), yet is hindered by severe process water contamination (COD: 20,000–80,000 mg/L). Multi-scale analyses reveal that: (i) compost-derived humic functional groups (-COOH, -OH) enhance HTC reactivity at the molecular level; (ii) coupling “HTC pretreatment + composting post-treatment” increases overall efficiency by 40 % and reduces the carbon footprint to 15 kg CO₂-eq/t; and (iii) intelligent process control enables nitrogen and phosphorus recovery rates above 90 %. The proposed “pollution control–resource recovery–carbon neutrality” framework substantially lowers environmental risks while enabling simultaneous energy recovery and nutrient recycling. This work provides a comprehensive mechanistic and process-level foundation for next-generation manure management strategies. Future research should prioritize AI-driven process optimization and the establishment of biochar carbon credit mechanisms to accelerate large-scale deployment under dual-carbon targets.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"14 2","pages":"Article 121464"},"PeriodicalIF":7.2,"publicationDate":"2026-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074883","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

Recent progress of two-dimensional materials for efficient electrochemical nitrate reduction 二维高效电化学还原硝酸盐材料研究进展

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-27 DOI: 10.1016/j.jece.2026.121455

Lili Hu , Min Teng , Yanyu Zhao , Wenjing Zhang , Haiyan Hu , Xinli Cheng , Wei Yuan , Junwei Yuan , Cheng Zhang , Fangchao Li , Yang Li

Two-dimensional (2D) materials exhibit precise control over carrier migration and heat diffusion within the two-dimensional plane, enabling them to effectively modulate catalytic and electrical properties, making them highly favorable for electron transfer. As a novel type of catalysts, 2D materials have garnered increasing attention in various electrocatalytic reactions, particularly in nitrate reduction electrocatalysis. This review paper provides an overview of recent advancements in utilizing 2D materials for nitrate reduction. Firstly, we present a concise summary of the nitrate reduction mechanism and different types of electrolytic cells used. Subsequently, we comprehensively review and discuss various types of 2D material electrocatalysts. Finally, we address the challenges, opportunities, and future prospects associated with nitrate reduction using 2D materials.

二维（2D）材料表现出对二维平面内载流子迁移和热扩散的精确控制，使其能够有效地调节催化和电学性能，使其非常有利于电子转移。二维材料作为一种新型催化剂，在各种电催化反应特别是硝酸还原电催化中越来越受到人们的关注。本文综述了利用二维材料还原硝酸盐的最新进展。首先，我们简要总结了硝酸还原机理和不同类型的电解电池。随后，我们对各种类型的二维材料电催化剂进行了全面的回顾和讨论。最后，我们讨论了与使用二维材料还原硝酸盐相关的挑战、机遇和未来前景。

引用次数: 0

Research progress on the degradation of emerging contaminants by In-situ Electrochemical Activation of the Sulfate System 原位电化学活化硫酸盐体系降解新兴污染物的研究进展

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-27 DOI: 10.1016/j.jece.2026.121453

Zhongyao Wang, Cheng Liu, Juncheng Wang, Lianfang Zhao

In-situ Electrochemical Activation of the Sulfate System (IEAS) is an emerging advanced oxidation technology that generates sulfate radicals with a high redox potential (2.5–3.1 V) in situ through electrochemical methods in aqueous environments. It enables efficient degradation of emerging contaminants without the requirement for external persulfate dosing, reducing treatment costs and mitigating environmental risks. This review summarizes the composition, oxidation mechanisms, application progress, and influencing factors of the IEAS. It also analyzes its advantages and challenges in degrading emerging contaminants and outlines potential future development directions, providing a theoretical basis and technical support for the effective treatment of complex aqueous matrices.

原位电化学活化硫酸盐系统（IEAS）是一种新兴的高级氧化技术，通过电化学方法在水环境中原位产生具有高氧化还原电位（2.5-3.1 V）的硫酸盐自由基。它可以有效地降解新出现的污染物，而不需要外部过硫酸盐剂量，降低处理成本并减轻环境风险。本文综述了IEAS的组成、氧化机理、应用进展及影响因素。分析了其在降解新兴污染物方面的优势和挑战，并概述了潜在的未来发展方向，为有效处理复杂水基质提供了理论基础和技术支持。

引用次数: 0

Sustainable xylene production via CO2-driven methylation of benzene and toluene for carbon-neutral aromatics 通过二氧化碳驱动的苯和甲苯甲基化生产碳中性芳烃的可持续二甲苯生产

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-27 DOI: 10.1016/j.jece.2026.121438

Babar Ali , Khalid Alhooshani , Saheed Adewale Ganiyu

The selective conversion of CO₂ into value-added aromatics, specifically xylenes, offers a promising strategy for both carbon emission reduction and the sustainable production of industrially important chemicals. Among these, the alkylation or methylation of benzene and toluene to produce xylenes in the presence of CO₂ has attracted considerable attention due to its potential to integrate CO₂ utilization with aromatic upgrading. This review provides a comprehensive overview of recent advances in this field, such as thermodynamic analyses and detailed mechanistic insights into both indirect and direct alkylation pathways. The development of catalysts that integrate active metal oxides for CO₂ hydrogenation with acidic zeolites for selective alkylation/methylation is discussed. Strategies for tuning catalytic properties to enhance performance are also highlighted. The key factors in critical catalyst design that influence catalytic performance, such as active metal oxides, oxygen vacancies, zeolite topology, and acid site distribution, are discussed in detail. Additionally, reaction parameters such as temperature, pressure, feed composition, space velocity, metal-zeolite proximity, and catalyst mass ratio significantly impact the catalytic performance. Challenges associated with catalyst deactivation, undesired side reactions, reaction selectivity, and long-term stability are also critically assessed. Finally, emerging strategies and prospects for designing robust, highly selective, and industrially viable catalyst systems are discussed. This review aims to provide valuable guidance for advancing CO₂-driven alkylation/methylation processes toward sustainable xylene production and carbon-neutral aromatics synthesis.

选择性地将二氧化碳转化为增值芳烃，特别是二甲苯，为减少碳排放和可持续生产工业重要化学品提供了一个有前途的战略。其中，苯和甲苯在二氧化碳存在下的烷基化或甲基化反应生成二甲苯，由于其将二氧化碳利用与芳烃升级结合起来的潜力而引起了相当大的关注。本文综述了该领域的最新进展，如热力学分析和间接和直接烷基化途径的详细机制见解。讨论了将活性金属氧化物与酸性沸石结合用于CO2加氢的选择性烷基化/甲基化催化剂的研究进展。还强调了调整催化性能以提高性能的策略。详细讨论了影响催化剂性能的关键因素，如活性金属氧化物、氧空位、沸石拓扑结构和酸位分布。此外，反应参数如温度、压力、进料组成、空速、金属与沸石的接近程度和催化剂质量比等对催化性能有显著影响。与催化剂失活、不良副反应、反应选择性和长期稳定性相关的挑战也被严格评估。最后，讨论了设计稳健、高选择性和工业上可行的催化剂系统的新策略和前景。本文综述旨在为推进二氧化碳驱动的烷基化/甲基化工艺向可持续二甲苯生产和碳中性芳烃合成方向发展提供有价值的指导。

{"title":"Sustainable xylene production via CO2-driven methylation of benzene and toluene for carbon-neutral aromatics","authors":"Babar Ali , Khalid Alhooshani , Saheed Adewale Ganiyu","doi":"10.1016/j.jece.2026.121438","DOIUrl":"10.1016/j.jece.2026.121438","url":null,"abstract":"<div><div>The selective conversion of CO<sub>2</sub> into value-added aromatics, specifically xylenes, offers a promising strategy for both carbon emission reduction and the sustainable production of industrially important chemicals. Among these, the alkylation or methylation of benzene and toluene to produce xylenes in the presence of CO<sub>2</sub> has attracted considerable attention due to its potential to integrate CO<sub>2</sub> utilization with aromatic upgrading. This review provides a comprehensive overview of recent advances in this field, such as thermodynamic analyses and detailed mechanistic insights into both indirect and direct alkylation pathways. The development of catalysts that integrate active metal oxides for CO<sub>2</sub> hydrogenation with acidic zeolites for selective alkylation/methylation is discussed. Strategies for tuning catalytic properties to enhance performance are also highlighted. The key factors in critical catalyst design that influence catalytic performance, such as active metal oxides, oxygen vacancies, zeolite topology, and acid site distribution, are discussed in detail. Additionally, reaction parameters such as temperature, pressure, feed composition, space velocity, metal-zeolite proximity, and catalyst mass ratio significantly impact the catalytic performance. Challenges associated with catalyst deactivation, undesired side reactions, reaction selectivity, and long-term stability are also critically assessed. Finally, emerging strategies and prospects for designing robust, highly selective, and industrially viable catalyst systems are discussed. This review aims to provide valuable guidance for advancing CO<sub>2</sub>-driven alkylation/methylation processes toward sustainable xylene production and carbon-neutral aromatics synthesis.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"14 2","pages":"Article 121438"},"PeriodicalIF":7.2,"publicationDate":"2026-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074881","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

Secondary resources and advanced separation technologies for critical metal recovery: Progress and challenges 关键金属回收的二次资源与先进分离技术：进展与挑战

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-27 DOI: 10.1016/j.jece.2026.121445

Phong H.N. Vo , Tan Phat Vo , Lai Nguyen Huy , Chawalit Chaiwong , Mojtaba Ajorloo , Tim J. Evans , Simon M. Clark , Vladimir Strezov

Critical metals (CMs) are indispensable to advanced manufacturing, underpinning catalytic, metallurgical, electrical, magnetic, and luminescent functions. This review provides a comprehensive assessment of CM characterization in secondary resources and evaluates recent advances in recovery technologies. Its objectives are to: (i) analyse CM distribution across diverse secondary resources, (ii) summarize progress in state-of-the-art recovery methods, (iii) examine major challenges to effective recovery, and (iv) identify research gaps and future directions. The results show that metallurgical waste, spent catalysts, spent batteries, and electroplating waste contain the highest CM concentrations, up to 10 – 60 % Co and Ni, and 5–30 % rare earth elements such as Nd, Dy, and Pr. Among recovery technologies, green solvents show the strongest potential, achieving up to 100 % of Ni, Co, and Li recovery under optimized conditions. Flotation and nanotechnology perform strongly for Ni, Co, and Li (80 – 100 %), whereas membranes show inconsistent and lower median recoveries, indicating limited efficiency. Current development is increasingly focused on selectivity, sustainability, and scalability to address complex waste matrices. Significant potential exists for the advancement of hybrid systems designed to optimize process efficiency, including bioleaching, solvent extraction, membranes, and adsorbents with 99 % recovery efficiency. Integrating Artificial Intelligence and Machine Learning improves the extraction of rare earth elements to 98.6 %. Furthermore, extraction techniques can be integrated with electrochemical systems to significantly reduce the generation of liquid waste. Integrating CM recovery into circular economy strategies and industrial symbiosis is strongly recommended to maximize efficiency and sustainability.

关键金属（CMs）是先进制造业不可或缺的，是催化、冶金、电气、磁性和发光功能的基础。本文综述了二次资源中CM表征的综合评价，并评价了回收技术的最新进展。其目标是：(i)分析CM在不同二次资源中的分布，（ii）总结最先进的回收方法的进展，（iii）检查有效回收的主要挑战，以及（iv）确定研究差距和未来方向。结果表明，冶金废弃物、废催化剂、废电池和电镀废弃物的CM浓度最高，Co和Ni的回收率可达10 ~ 60% %，Nd、Dy、Pr等稀土元素的回收率可达5 ~ 30% %。在回收技术中，绿色溶剂表现出最强的潜力，在优化条件下，Ni、Co和Li的回收率可达100% %。浮选和纳米技术对Ni， Co和Li（80 - 100 %）表现良好，而膜表现出不一致和较低的中位回收率，表明效率有限。目前的发展日益侧重于选择性，可持续性和可扩展性，以解决复杂的废物矩阵。优化工艺效率的混合系统的发展潜力巨大，包括生物浸出、溶剂萃取、膜和吸附剂，回收率为99% %。结合人工智能和机器学习，稀土元素提取率提高到98.6% %。此外，萃取技术可以与电化学系统相结合，以显著减少液体废物的产生。强烈建议将CM回收纳入循环经济战略和产业共生，以最大限度地提高效率和可持续性。

{"title":"Secondary resources and advanced separation technologies for critical metal recovery: Progress and challenges","authors":"Phong H.N. Vo , Tan Phat Vo , Lai Nguyen Huy , Chawalit Chaiwong , Mojtaba Ajorloo , Tim J. Evans , Simon M. Clark , Vladimir Strezov","doi":"10.1016/j.jece.2026.121445","DOIUrl":"10.1016/j.jece.2026.121445","url":null,"abstract":"<div><div>Critical metals (CMs) are indispensable to advanced manufacturing, underpinning catalytic, metallurgical, electrical, magnetic, and luminescent functions. This review provides a comprehensive assessment of CM characterization in secondary resources and evaluates recent advances in recovery technologies. Its objectives are to: (i) analyse CM distribution across diverse secondary resources, (ii) summarize progress in state-of-the-art recovery methods, (iii) examine major challenges to effective recovery, and (iv) identify research gaps and future directions. The results show that metallurgical waste, spent catalysts, spent batteries, and electroplating waste contain the highest CM concentrations, up to 10 – 60 % Co and Ni, and 5–30 % rare earth elements such as Nd, Dy, and Pr. Among recovery technologies, green solvents show the strongest potential, achieving up to 100 % of Ni, Co, and Li recovery under optimized conditions. Flotation and nanotechnology perform strongly for Ni, Co, and Li (80 – 100 %), whereas membranes show inconsistent and lower median recoveries, indicating limited efficiency. Current development is increasingly focused on selectivity, sustainability, and scalability to address complex waste matrices. Significant potential exists for the advancement of hybrid systems designed to optimize process efficiency, including bioleaching, solvent extraction, membranes, and adsorbents with 99 % recovery efficiency. Integrating Artificial Intelligence and Machine Learning improves the extraction of rare earth elements to 98.6 %. Furthermore, extraction techniques can be integrated with electrochemical systems to significantly reduce the generation of liquid waste. Integrating CM recovery into circular economy strategies and industrial symbiosis is strongly recommended to maximize efficiency and sustainability.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"14 2","pages":"Article 121445"},"PeriodicalIF":7.2,"publicationDate":"2026-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170284","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

Mechanisms, influencing factors, removal effectiveness and electrochemically enhanced technologies of tidal flow constructed wetlands 潮汐式人工湿地的机理、影响因素、去除效果及电化学强化技术

IF 7.2 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering

Pub Date : 2026-01-26 DOI: 10.1016/j.jece.2026.121416

Chunyao Zhao , Yuqing Yang , Xiaoheng Wang , Peiyang Zhang , Bohan Fang , Yuting Zhong , Ke Zhao , Zhen Hu , Erping Cui , Jianan Li

Tidal flow constructed wetland (TFCW) creates an anaerobic/aerobic alternating environment through tidal operation, greatly enhancing oxygen supply. Here, we review the state of the art on the mechanisms, influencing factors, removal effectiveness and electrochemically enhanced technologies of TFCWs, highlighting their feasibility and flexibility. The unique hydraulic conditions (e.g. the flooding/resting duration ratio) of TFCWs work synergistically with the substrate, plants and microorganisms in the environment to effectively remove both conventional and emerging pollutants. The influent carbon-to-nitrogen ratio and the temperature also influence their removal. Generally, total suspended solids and the biochemical oxygen demand are removed at high levels. Reduction of the chemical oxygen demand varies, tending to improve with longer flooding/resting duration ratios when sufficient dissolved oxygen is present during the flooding phase. Ammonium removal has been widely reported, primarily by substrate adsorption and microbial nitrification. By contrast, the removal of nitrate and nitrite is highly variable and they often accumulate in the system. Total phosphorus and phosphate removal also fluctuates. Additionally, limited research has indicated that heavy metals, pharmaceutical and personal care products and antibiotic resistance genes are effectively removed in TFCWs. To further enhance the removal performance, electrochemical technologies (e.g. electrolysis, iron-carbon micro-electrolysis, microbial fuel cells) have been successfully integrated into TFCWs and proven to be effective. Future research should prioritise novel functional substrate testing, long-term evaluations using real wastewater to assess the robustness of systems against more pollutants, mechanistic studies under tidal dynamics, pilot to full-scale applications, and process modelling with comprehensive assessments to guide system optimisation.

潮汐流人工湿地（TFCW）通过潮汐作用形成厌氧/好氧交替环境，极大地提高了供氧能力。本文综述了TFCWs的机理、影响因素、去除效果和电化学强化技术的研究进展，并强调了其可行性和灵活性。TFCWs独特的水力条件（例如淹水/静息时间比）与环境中的基质、植物和微生物协同作用，有效去除传统和新出现的污染物。进水碳氮比和温度也影响它们的去除。一般来说，总悬浮固体和生化需氧量在高水平上被去除。化学需氧量的减少是不同的，当在驱油阶段有足够的溶解氧存在时，随着驱油/静息时间比的延长，化学需氧量的减少趋于改善。铵盐的去除已被广泛报道，主要是通过底物吸附和微生物硝化。相比之下，硝酸盐和亚硝酸盐的去除是高度可变的，它们经常在系统中积累。总磷和磷酸盐去除率也有波动。此外，有限的研究表明，重金属、药品和个人护理产品以及抗生素耐药基因在TFCWs中被有效去除。为了进一步提高去除性能，电化学技术（如电解、铁碳微电解、微生物燃料电池）已成功集成到TFCWs中，并被证明是有效的。未来的研究应优先考虑新型功能基质测试、使用真实废水进行长期评估以评估系统对更多污染物的鲁棒性、潮汐动力学下的机理研究、试点到全面应用，以及通过综合评估进行过程建模以指导系统优化。

{"title":"Mechanisms, influencing factors, removal effectiveness and electrochemically enhanced technologies of tidal flow constructed wetlands","authors":"Chunyao Zhao , Yuqing Yang , Xiaoheng Wang , Peiyang Zhang , Bohan Fang , Yuting Zhong , Ke Zhao , Zhen Hu , Erping Cui , Jianan Li","doi":"10.1016/j.jece.2026.121416","DOIUrl":"10.1016/j.jece.2026.121416","url":null,"abstract":"<div><div>Tidal flow constructed wetland (TFCW) creates an anaerobic/aerobic alternating environment through tidal operation, greatly enhancing oxygen supply. Here, we review the state of the art on the mechanisms, influencing factors, removal effectiveness and electrochemically enhanced technologies of TFCWs, highlighting their feasibility and flexibility. The unique hydraulic conditions (e.g. the flooding/resting duration ratio) of TFCWs work synergistically with the substrate, plants and microorganisms in the environment to effectively remove both conventional and emerging pollutants. The influent carbon-to-nitrogen ratio and the temperature also influence their removal. Generally, total suspended solids and the biochemical oxygen demand are removed at high levels. Reduction of the chemical oxygen demand varies, tending to improve with longer flooding/resting duration ratios when sufficient dissolved oxygen is present during the flooding phase. Ammonium removal has been widely reported, primarily by substrate adsorption and microbial nitrification. By contrast, the removal of nitrate and nitrite is highly variable and they often accumulate in the system. Total phosphorus and phosphate removal also fluctuates. Additionally, limited research has indicated that heavy metals, pharmaceutical and personal care products and antibiotic resistance genes are effectively removed in TFCWs. To further enhance the removal performance, electrochemical technologies (e.g. electrolysis, iron-carbon micro-electrolysis, microbial fuel cells) have been successfully integrated into TFCWs and proven to be effective. Future research should prioritise novel functional substrate testing, long-term evaluations using real wastewater to assess the robustness of systems against more pollutants, mechanistic studies under tidal dynamics, pilot to full-scale applications, and process modelling with comprehensive assessments to guide system optimisation.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"14 2","pages":"Article 121416"},"PeriodicalIF":7.2,"publicationDate":"2026-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074797","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