{"title":"Chloroaromatics remediation: Insights into the chemical reduction and hydrodechlorination of chlorobenzenes","authors":"Alejandro Leal-Duaso, José M. Fraile","doi":"10.1080/10643389.2025.2560432","DOIUrl":"https://doi.org/10.1080/10643389.2025.2560432","url":null,"abstract":"Chloroaromatic compounds—including not only chlorobenzenes, but alsochloroanilines, chlorophenols and others—are chemicals widely used for decades as industrial solvents, synthetic intermediates, and pesticides. However, many of these compounds are classified as persistent organic pollutants due to their biaccumulative nature, additionally having toxic and neurotoxic effects to humans and animals. Significant stocks of obsolete chloroaromatics, along with numerous heavily contaminated sites worldwide—including air, surface water, groundwater, and soil—underscore the urgent need for efficient remediation strategies. Chemical reduction has emerged as a well-stablished and effective approach for the transformation and/or valorization of chloroaromatics, particularly chlorobenzenes, into less toxic and higher-value compounds, such as cyclohexane and benzene. This approach may also yield other specific products such as methane, polyaromatics, and carbon-based nanomaterials.In this review, we provide the first comprehensive and also critical assessment of all hydrodechlorination and chemical reduction methods applied to the transformation, remediation, and valorization of chlorobenzenes. All the available literature has been analyzed in terms of practical feasibility, limitations, cost-effectiveness, and scalability. Reduction strategies are categorized by the type of reducing agent, distinguishing between stoichiometric and catalytic methods. The performance of various reductants—including metals, metal sulfides, hydrogen gas, hydrides, and water—in combination with a long series of organic and inorganic hydrogen donors (<i>e.g</i>. hydrocarbons, alcohols, formates, silanes, hydrazine) is thoroughly evaluated. Finally, insights into the electrochemical and photochemical reduction of chlorobenzenes in both polluted water and soil are also provided.","PeriodicalId":10823,"journal":{"name":"Critical Reviews in Environmental Science and Technology","volume":"40 1","pages":"1-29"},"PeriodicalIF":12.6,"publicationDate":"2025-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145133739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Manganese oxides for electrochemical adsorption of metal ions in aqueous environments: A comprehensive review from fundamentals to applications","authors":"Xiong Yang, Jiahai Yu, Yafei Shi, Kewu Pi, Chengshuai Liu, Guohong Qiu","doi":"10.1080/10643389.2025.2557360","DOIUrl":"https://doi.org/10.1080/10643389.2025.2557360","url":null,"abstract":"The removal and recovery of metal ions from wastewater are crucial for environmental sustainability and resource management. Electrochemical adsorption emerges as a promising technology due to its simplicity, controllability, and eco-friendliness. Manganese oxides (Mn oxides), naturally abundant and electrochemically active, exhibit substantial adsorption capacities and selectivity for various metal ions in aqueous solutions, making them excellent candidates for this technology. This comprehensive review synthesizes the latest developments in Mn oxides-based electrochemical adsorption from fundamentals to applications. This review finds that the superior performance of Mn oxides stems from a synergy of multiple mechanisms. Beyond conventional electric double-layer adsorption, pseudocapacitive ion storage and surface redox reactions play a dominant role, offering a significant advantage in terms of both capacity and selectivity. The analysis reveals that this performance is intricately dependent on a delicate interplay between the material’s intrinsic properties (such as crystal structure, morphology, and average oxidation state), solution chemistry (including pH and the presence of co-existing ions), and operational parameters. Furthermore, this review provides a detailed overview of the diverse applications of Mn oxides electrodes, spanning not only wastewater treatment for heavy metals and radioactive ions but also crucial resource recovery endeavors such as seawater desalination, water softening, and lithium extraction. By offering a critical framework for understanding these complex mechanisms and identifying key influencing factors, this work provides a roadmap for the rational design of next-generation Mn oxides adsorbents and the future development of electrochemical metal ion recovery technologies.","PeriodicalId":10823,"journal":{"name":"Critical Reviews in Environmental Science and Technology","volume":"95 1","pages":""},"PeriodicalIF":12.6,"publicationDate":"2025-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145133744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Application of ion imprinted polymers (IIPs) for rare earth elements recovery from secondary aqueous sources—A data-based review","authors":"Pan Ni, John Earwood, Baolin Deng","doi":"10.1080/10643389.2025.2553281","DOIUrl":"https://doi.org/10.1080/10643389.2025.2553281","url":null,"abstract":"Rare earth elements (REE) are of significant importance due to their irreplaceable roles played in various industries and military applications. The current REE supply mainly comes from primary ore-deposits and is under control by very few countries, leading to a significant risk of supply-chain disruption. To minimize such risk, there is an increased interest in extracting REEs from secondary sources, such as Acid Mine Drainage (AMD) and natural Acid Rock Drainage (ARD). However, compared to the primary sources, the dramatically lower concentration of REEs and higher levels of competing species (e.g., H<sup>+</sup>, Fe<sup>3+</sup>, Ca<sup>2+</sup>, Mg<sup>2+</sup>, Al<sup>3+</sup>) makes REE extraction extremely challenging. One approach to overcome this challenge is to use highly selective adsorbents, such as ion imprinted polymers (IIPs) that have been increasingly explored in recent years. Our main objectives of this data-based review are to: (1) clarify the application scenarios of two types of selectivity factors and evaluate the related methods <i>via</i> data analysis and modeling, (2) compare the performance of synthetic <i>versus</i> natural polymer-based IIPs through statistical analysis, and (3) provide perspectives for IIP development and testing to facilitate future advances.","PeriodicalId":10823,"journal":{"name":"Critical Reviews in Environmental Science and Technology","volume":"24 1","pages":"1-19"},"PeriodicalIF":12.6,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145067736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Danmei Cai, Yan Wang, Xinyu Zhao, Junqiu Wu, Yun Lu, Beidou Xi
{"title":"A paradigm shift driven by multi-source data, mechanistic insights, adaptive machine intelligence, and multi-objective optimization for composting intelligent automation applications","authors":"Danmei Cai, Yan Wang, Xinyu Zhao, Junqiu Wu, Yun Lu, Beidou Xi","doi":"10.1080/10643389.2025.2557306","DOIUrl":"https://doi.org/10.1080/10643389.2025.2557306","url":null,"abstract":"Driven by the dual carbon goals, composting technology is undergoing a transformative shift toward multifunctionality, precision, and intelligentization. By leveraging the data-driven modeling advantages of machine learning (ML), composting technology aims to enhance organic waste valorization and soil carbon sequestration. However, current intelligent composting technologies remain constrained by data scarcity, limited generalization capacity, and oversimplified optimization objectives, which hinder their ability to meet the demands of high-efficiency resource recovery and process intelligence. To address these challenges, this study proposes a quadruple synergistic modeling framework, integrating “multi-source data, mechanistic insights, adaptive intelligence, and multi-objective optimization,” aiming to overcome the limitations of traditional data analysis methods and drive composting technologies toward intelligence and high-value applications. Specifically, this study enhances the prediction accuracy through multi-source data integration, elucidates the interaction mechanisms within the system to strengthen the model construction, incorporates dynamic data optimization modules to improve the system adaptability, and couples a multi-objective optimization decision system to holistically regulate the multi-dimensional balance among compost product value, process efficiency, and environmental benefits. Overall, this study conceptualizes a sustainable organic waste management paradigm, offering novel perspectives to advance waste valorization cycles and amplify the carbon mitigation potential of composting, thereby contributing to the implementation of dual carbon goal strategies.","PeriodicalId":10823,"journal":{"name":"Critical Reviews in Environmental Science and Technology","volume":"28 1","pages":"1578-1598"},"PeriodicalIF":12.6,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145067734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Application and challenges of machine learning in microbial remediation: A review of current status and future directions","authors":"Yueyan Zhang, Jun Sasaki, Ang Li, Jundong Chen","doi":"10.1080/10643389.2025.2560435","DOIUrl":"https://doi.org/10.1080/10643389.2025.2560435","url":null,"abstract":"Microbial remediation is crucial in environmental pollution control. However, targeted intervention is challenging due to the complex and dynamic interactions between microbial communities and external stressors. Machine learning (ML) can be used to deeply analyze the connections between microbial processes and contaminant removal through data mining. Microbial remediation lies at the intersection of microbiology and environmental science, with its diverse scope offering high flexibility for ML applications. Despite the potential of ML, limited attention has been given to its applications within this specific field, and there is a lack of structured reviews to guide the development of ML frameworks in microbial remediation. This review examines the role and current status of ML in microbial remediation. Application modes are presented and compared with a clear hierarchy, including initial monitoring, strategy formulation, and system design. It provides access to established frameworks and alternative solutions to address relevant challenges. Two primary application modes are identified among the seemingly diverse approaches: mapping-based inference and importance-based identification of key agents. The first mode establishes a mapping between two causally linked datasets to predict various outcomes such as remedial effects and microbial growth. Accordingly, the second mode identifies predictors that significantly contribute to mapping accuracies as key microbes or environmental variables. Emerging issues related to the limited accessibility and interpretability are discussed. Finally, using multi-modal learning for pipeline development and applying knowledge graphs (KGs) and a deep reinforcement learning framework to enhance interpretability are proposed as promising solutions.","PeriodicalId":10823,"journal":{"name":"Critical Reviews in Environmental Science and Technology","volume":"22 1","pages":""},"PeriodicalIF":12.6,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145077545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tian Gao, Yi Li, Nan Yang, Wei Xiong, Xiaodan Liang, Yingjie Wang
{"title":"Plant-rhizosphere microbe interactions and their roles in nitrogen cycles under periodic flooding: From cooperation mechanisms to ecological responses","authors":"Tian Gao, Yi Li, Nan Yang, Wei Xiong, Xiaodan Liang, Yingjie Wang","doi":"10.1080/10643389.2025.2530941","DOIUrl":"https://doi.org/10.1080/10643389.2025.2530941","url":null,"abstract":"","PeriodicalId":10823,"journal":{"name":"Critical Reviews in Environmental Science and Technology","volume":"212 1","pages":""},"PeriodicalIF":12.6,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144670045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Maria Jose Jimenez Vizcarra, Zhiqian Han, Peng Gao, Meng Wang
{"title":"Underrecognized three-carbon chlorinated aliphatic hydrocarbons: Occurrence, regulation, and treatment strategies","authors":"Maria Jose Jimenez Vizcarra, Zhiqian Han, Peng Gao, Meng Wang","doi":"10.1080/10643389.2025.2484889","DOIUrl":"https://doi.org/10.1080/10643389.2025.2484889","url":null,"abstract":"Three-carbon chlorinated aliphatic hydrocarbons (3C-CAHs) are a group of contaminants widely used in various industrial processes. Despite their frequent occurrence in diverse environmental matrices and established toxicity, these compounds receive much less attention compared to their shorter-chain counterparts such as trichloroethylene and dichloroethylene, leading to significant gaps in regulations and knowledge about their contamination levels and treatment approaches. This review aims to address these notable research gaps on 3C-CAHs, exploring their use, discharge, occurrence, fate, and transport across environmental matrices. By comparing them with one- and two-carbon CAHs, we highlight the unique properties and toxicity profiles of 3C-CAHs. Furthermore, we discuss state-of-the-art treatment techniques for 3C-CAHs, focusing on adsorption, chemical treatment, and biodegradation, and identify respective advantages and limitations. We also summarize regulations at state and federal levels in the U.S. and globally, underscoring the inadequacy of existing regulations for many 3C-CAH compounds. Lastly, we propose future research needs to further advance our understanding of the current contamination status of 3C-CAHs and to promote the development of sustainable and effective treatment methods for mitigating their environmental impacts. Overall, through this review, we aim to raise awareness and stimulate discussion on the importance of addressing 3C-CAHs in environmental management strategies.","PeriodicalId":10823,"journal":{"name":"Critical Reviews in Environmental Science and Technology","volume":"45 1","pages":"1047-1069"},"PeriodicalIF":12.6,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144237834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Peracetic acid-driven advanced oxidation processes for wastewater treatment: Demystifying organic radicals and non-radical species","authors":"Guanglei Yao, Xuefei Zhou, Haiping Gao, Tongcai Liu, Yalei Zhang, Jiabin Chen","doi":"10.1080/10643389.2025.2495637","DOIUrl":"https://doi.org/10.1080/10643389.2025.2495637","url":null,"abstract":"Peracetic acid (PAA) based advanced oxidation processes (AOPs) have received increasing attention in wastewater treatment. However, it is challenging to identify the radical and/or non-radical species and elucidate the intrinsic interaction mechanisms involved in PAA-based AOPs. This work presents a systematic review of the selective generation mechanisms of radicals (hydroxyl and organic radicals), with a focus on organic radicals, and non-radical species (reactive complexes (RC), high-valent metals (HVM), singlet oxygen (<sup>1</sup>O<sub>2</sub>), and electron transfer process (ETP)). Furthermore, we examine various strategies for the precise identification and characterization of radical and/or non-radical species (e.g., quenching, chemical probes, spectroscopy, mass spectrometry, and electrochemical testing), and emphasize existing controversies. Subsequently, we provide an in-depth discussion of the reaction mechanisms between the reactive species and the contaminants/water matrices, as well as the potential for generating halogenated byproducts. Finally, we highlight the challenges and opportunities of the PAA-based AOPs in wastewater treatment, aiming to inspire future research endeavors that promote the practical application of PAA-based AOPs in wastewater treatment.","PeriodicalId":10823,"journal":{"name":"Critical Reviews in Environmental Science and Technology","volume":"4 1","pages":"1124-1147"},"PeriodicalIF":12.6,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144252298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zi-Tong Zhao, Jie Ding, Ji-Wei Pang, Mei-Yi Bao, Geng Luo, Bo-Yuan Wang, Bing-Feng Liu, Lu-Yan Zhang, Nan-Qi Ren, Shan-Shan Yang
{"title":"Pretreatments of lignocellulosic biomass for biohydrogen biorefinery: Recent progress, techno-economic feasibility and prospectives","authors":"Zi-Tong Zhao, Jie Ding, Ji-Wei Pang, Mei-Yi Bao, Geng Luo, Bo-Yuan Wang, Bing-Feng Liu, Lu-Yan Zhang, Nan-Qi Ren, Shan-Shan Yang","doi":"10.1080/10643389.2025.2484892","DOIUrl":"https://doi.org/10.1080/10643389.2025.2484892","url":null,"abstract":"Dark fermentation (DF) of lignocellulosic biomass (LB) is expected to play a critical role in building a green hydrogen supply chain toward the carbon-neutral society. Due to its inherent recalcitrance, biomass demands pretreatment to increase its digestibility. Various pretreatment techniques have been extensively investigated to improve the digestibility of feedstocks. However, no systematic review of pretreatment to promote biohydrogen fermentation has been conducted. Besides, studies analyzing the economic feasibility of pretreatment technologies are lacking. The aim of this review is to analyze the current pretreatment techniques and research results based on different driving forces. Intense thermochemical pretreatment dissolves lignin and hemicellulose and forms various inhibitors that interfere with the physiological and metabolic functions of the microbiota. Moreover, the issues related to the detoxification methods of inhibitors and their impacts on biomass fermentation were highlighted. The possibility of bioaugmentation of hydrogen-producing microflora with genetically engineered or naturally resistant bacteria may serve to be an effective <i>in situ</i> detoxification protocol. Moreover, the recycling techniques related to pretreatment were also discussed. Black liquor is a huge carbon reservoir with great potential to produce products such as biohydrogen and the value-added products generated will help reduce the environmental degradation caused by black liquor. Furthermore, the technical and economic viability of the current pretreatment methods and the prospects were also discussed. Increased costs related with buffering, reduced productivity and energy efficacy are critical factors contributing to the costs of bio-H<sub>2</sub> production. For every 20% increase in H<sub>2</sub> yield, production costs are decreased by 8%.","PeriodicalId":10823,"journal":{"name":"Critical Reviews in Environmental Science and Technology","volume":"25 1","pages":"1070-1096"},"PeriodicalIF":12.6,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144237873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}