Pub Date : 2025-09-12DOI: 10.1016/j.coesh.2025.100668
Jan Vymazal
The most important processes responsible for nitrogen removal in constructed wetlands (CWs) are nitrification and denitrification. These processes were well-described in the second part of the 19th century and are still valid. During the recent years, other processes responsible for nitrogen removal in CWs have been identified, namely anaerobic ammonia oxidation (Anammox), anaerobic ammonia-oxidation-coupled-to-dissimilatory ferric iron reduction (Feammox) and autotrophic denitrification. Also, bacteria that can perform complete oxidation of ammonia to nitrate (Comammox) have been discovered. This review is mostly aimed at these newly discovered processes in relation to wastewater treatment in CWs.
{"title":"Nitrogen removal in constructed wetlands","authors":"Jan Vymazal","doi":"10.1016/j.coesh.2025.100668","DOIUrl":"10.1016/j.coesh.2025.100668","url":null,"abstract":"<div><div>The most important processes responsible for nitrogen removal in constructed wetlands (CWs) are nitrification and denitrification. These processes were well-described in the second part of the 19th century and are still valid. During the recent years, other processes responsible for nitrogen removal in CWs have been identified, namely anaerobic ammonia oxidation (Anammox), anaerobic ammonia-oxidation-coupled-to-dissimilatory ferric iron reduction (Feammox) and autotrophic denitrification. Also, bacteria that can perform complete oxidation of ammonia to nitrate (Comammox) have been discovered. This review is mostly aimed at these newly discovered processes in relation to wastewater treatment in CWs.</div></div>","PeriodicalId":52296,"journal":{"name":"Current Opinion in Environmental Science and Health","volume":"48 ","pages":"Article 100668"},"PeriodicalIF":6.6,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145222485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The discovery of 6PPD-quinone as a toxic transformation product and aqueous contaminant from a common tire antioxidant has catalyzed extensive research into its environmental occurrence and other tire-related emerging contaminants (TRECs). However, many other tire-derived chemicals remain understudied, yet may pose significant environmental risks. This review provides a critical overview of the characteristics, occurrence, and fate of TRECs, as well as their toxicological impacts. While advancements in analytical techniques have enhanced the detection of these contaminants, knowledge gaps exist regarding their persistence, transformation, and long-term effects in various environmental compartments. Recent findings suggest that several TRECs, including diphenylguanidine (DPG) and hexamethoxymethylmelamine (HMMM), are frequently detected in road runoff, wastewater, sediments, and even biota. Given their widespread occurrence and potential toxicity, further investigations into their environmental behavior, regulatory implications, and mitigation strategies are urgently needed. This review highlights the pressing need for expanded research beyond 6PPD-quinone to address the broader risks associated with TRECs.
{"title":"Tire-wear particles and tire-related emerging contaminants: Characteristics, occurrence, and toxicity in the environment","authors":"Mahyar Ghanadi , Lou Caubrière , Melanie Kah , Lokesh P. Padhye","doi":"10.1016/j.coesh.2025.100666","DOIUrl":"10.1016/j.coesh.2025.100666","url":null,"abstract":"<div><div>The discovery of 6PPD-quinone as a toxic transformation product and aqueous contaminant from a common tire antioxidant has catalyzed extensive research into its environmental occurrence and other tire-related emerging contaminants (TRECs). However, many other tire-derived chemicals remain understudied, yet may pose significant environmental risks. This review provides a critical overview of the characteristics, occurrence, and fate of TRECs, as well as their toxicological impacts. While advancements in analytical techniques have enhanced the detection of these contaminants, knowledge gaps exist regarding their persistence, transformation, and long-term effects in various environmental compartments. Recent findings suggest that several TRECs, including diphenylguanidine (DPG) and hexamethoxymethylmelamine (HMMM), are frequently detected in road runoff, wastewater, sediments, and even biota. Given their widespread occurrence and potential toxicity, further investigations into their environmental behavior, regulatory implications, and mitigation strategies are urgently needed. This review highlights the pressing need for expanded research beyond 6PPD-quinone to address the broader risks associated with TRECs.</div></div>","PeriodicalId":52296,"journal":{"name":"Current Opinion in Environmental Science and Health","volume":"48 ","pages":"Article 100666"},"PeriodicalIF":6.6,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145222484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-06DOI: 10.1016/j.coesh.2025.100667
Joshua R. Thienpont , Jennifer B. Korosi , Jules M. Blais , John P. Smol
Many aquatic ecosystems have experienced a history of impacts from exposure to environmental contaminants, with aquatic biota often exhibiting population and/or community changes following toxicant exposure. However, identifying aquatic effects can be challenging due to a paucity of monitoring data and gaps in monitoring records. The study of lake sediments as natural environmental archives (paleolimnology) provides an opportunity to assess the long-term impacts of pollution on aquatic organisms and ecosystems. Cores collected from polluted systems can preserve both a record of the toxicant(s) in question, and also an archive of biotic changes at multiple scales of organization, from molecular levels to communities to ecosystem processes (paleo-ecotoxicology). Here, we review recent examples of the application of the paleo-ecotoxicological approach based on ‘classical’ paleolimnological indicators of contamination (e.g. metals, organic contaminants) and ecotoxicological response variables (e.g. pigments and subfossil morphological indicators). We also outline emerging environmental contaminants (e.g. microplastics, pharmaceuticals) that are increasingly being detected and documented in sediment records, highlighting evolving sources and intensities of toxicological stressors that are fruitful areas for future paleo-ecotoxicological inquiry. In addition, the ability to characterize aquatic community changes using emerging sedimentary DNA approaches has rapidly expanded, providing a powerful opportunity to build on the ecological information obtained from traditional indicators to better understand ecosystem responses to contamination. Finally, we argue for the importance of methodological approaches that specifically examine the ecotoxicological impacts of contamination in the future application of the paleo-ecotoxicological approach by exploring several recent examples.
{"title":"New developments in paleo-ecotoxicology: Emerging approaches in applying lake sediment archives to assess impacts from aquatic pollution","authors":"Joshua R. Thienpont , Jennifer B. Korosi , Jules M. Blais , John P. Smol","doi":"10.1016/j.coesh.2025.100667","DOIUrl":"10.1016/j.coesh.2025.100667","url":null,"abstract":"<div><div>Many aquatic ecosystems have experienced a history of impacts from exposure to environmental contaminants, with aquatic biota often exhibiting population and/or community changes following toxicant exposure. However, identifying aquatic effects can be challenging due to a paucity of monitoring data and gaps in monitoring records. The study of lake sediments as natural environmental archives (paleolimnology) provides an opportunity to assess the long-term impacts of pollution on aquatic organisms and ecosystems. Cores collected from polluted systems can preserve both a record of the toxicant(s) in question, and also an archive of biotic changes at multiple scales of organization, from molecular levels to communities to ecosystem processes (paleo-ecotoxicology). Here, we review recent examples of the application of the paleo-ecotoxicological approach based on ‘classical’ paleolimnological indicators of contamination (e.g. metals, organic contaminants) and ecotoxicological response variables (e.g. pigments and subfossil morphological indicators). We also outline emerging environmental contaminants (e.g. microplastics, pharmaceuticals) that are increasingly being detected and documented in sediment records, highlighting evolving sources and intensities of toxicological stressors that are fruitful areas for future paleo-ecotoxicological inquiry. In addition, the ability to characterize aquatic community changes using emerging sedimentary DNA approaches has rapidly expanded, providing a powerful opportunity to build on the ecological information obtained from traditional indicators to better understand ecosystem responses to contamination. Finally, we argue for the importance of methodological approaches that specifically examine the ecotoxicological impacts of contamination in the future application of the paleo-ecotoxicological approach by exploring several recent examples.</div></div>","PeriodicalId":52296,"journal":{"name":"Current Opinion in Environmental Science and Health","volume":"48 ","pages":"Article 100667"},"PeriodicalIF":6.6,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145222483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the face of escalating water pollution, the development of innovative and sustainable processes for wastewater treatment has become imperative to safeguard ecosystems. The current review explores the integration of nanotechnology with lignocellulosic materials to develop cost-effective, high-performance nanoadsorbents for wastewater treatment. The nanostructured cellulose and lignin exhibit enhanced porosity, surface area, and functionalization capabilities, enabling efficient removal of environmental pollutants, including heavy metals. The advancements in using nanocellulose/nanolignin for removing water pollutants and understanding the underlying mechanisms, as well as life cycle analysis, are discussed. These bio-based nanomaterials reduce environmental impact, improve resource efficiency, and support sustainable development goals (SDGs).
{"title":"Sustainable nanoadsorbents from lignocellulosic waste: A green approach to wastewater treatment","authors":"Parushi Nargotra , Mei-Ling Tsai , Cheng-Di Dong , Chia-Hung Kuo , Bijender Kumar Bajaj , Vishal Sharma","doi":"10.1016/j.coesh.2025.100665","DOIUrl":"10.1016/j.coesh.2025.100665","url":null,"abstract":"<div><div>In the face of escalating water pollution, the development of innovative and sustainable processes for wastewater treatment has become imperative to safeguard ecosystems. The current review explores the integration of nanotechnology with lignocellulosic materials to develop cost-effective, high-performance nanoadsorbents for wastewater treatment. The nanostructured cellulose and lignin exhibit enhanced porosity, surface area, and functionalization capabilities, enabling efficient removal of environmental pollutants, including heavy metals. The advancements in using nanocellulose/nanolignin for removing water pollutants and understanding the underlying mechanisms, as well as life cycle analysis, are discussed. These bio-based nanomaterials reduce environmental impact, improve resource efficiency, and support sustainable development goals (SDGs).</div></div>","PeriodicalId":52296,"journal":{"name":"Current Opinion in Environmental Science and Health","volume":"48 ","pages":"Article 100665"},"PeriodicalIF":6.6,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145121009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-27DOI: 10.1016/j.coesh.2025.100664
Fan Zhou , Yuxuan Xie , Yu Wang , Xiaobin Liao , Chao Chen
This paper summarizes recent progress in identifying sources of nitrosamines (NAs) and their precursors in water resources. Natural sources include humic substances, microbial and algal metabolites, which will be exacerbated by natural disasters and extreme climate events. Anthropogenic sources include domestic wastewater, industrial wastewater and agricultural wastewater. Natural sources generally contribute a few to dozens of ng/L of precursors but provide minimal NAs, while anthropogenic sources provide a few to hundreds of ng/L of NAs and higher levels of precursors. These insights aid differentiation of natural vs. anthropogenic contributions, providing guidance for pollution control and sustainable management of water resources.
{"title":"Which sources contribute more to nitrosamines and their precursors in water resources: The natural or the anthropogenic?","authors":"Fan Zhou , Yuxuan Xie , Yu Wang , Xiaobin Liao , Chao Chen","doi":"10.1016/j.coesh.2025.100664","DOIUrl":"10.1016/j.coesh.2025.100664","url":null,"abstract":"<div><div>This paper summarizes recent progress in identifying sources of nitrosamines (NAs) and their precursors in water resources. Natural sources include humic substances, microbial and algal metabolites, which will be exacerbated by natural disasters and extreme climate events. Anthropogenic sources include domestic wastewater, industrial wastewater and agricultural wastewater. Natural sources generally contribute a few to dozens of ng/L of precursors but provide minimal NAs, while anthropogenic sources provide a few to hundreds of ng/L of NAs and higher levels of precursors. These insights aid differentiation of natural vs. anthropogenic contributions, providing guidance for pollution control and sustainable management of water resources.</div></div>","PeriodicalId":52296,"journal":{"name":"Current Opinion in Environmental Science and Health","volume":"48 ","pages":"Article 100664"},"PeriodicalIF":6.6,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145050573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wastewater treatment is a critical process for building a water-resilient economy, ensuring pollutant removal before environmental discharge. Conventional treatment methods, though effective, are energy-intensive, reliant on chemical processes, and generate large volumes of sludge, posing economic and environmental challenges. In recent years, microalgae-based wastewater treatment has emerged as a promising alternative due to its potential for efficient nutrient removal, biomass valorization, and carbon sequestration. However, despite its advantages, large-scale implementation remains constrained by operational costs, biomass harvesting inefficiencies, and variable treatment performance. Recent advancements in techno-economic assessments, bioprocess optimization, and multiomics approaches have improved system efficiency, cost-effectiveness, and bioproduct recovery. This study reviews the latest developments, opportunities, and challenges in microalgal wastewater treatment, providing insights into its feasibility and future prospects. A comprehensive understanding of emerging technologies and integrated system approaches will be crucial in advancing microalgal-based solutions for sustainable wastewater management.
{"title":"Microalgae-based treatment for wastewater management and valorization","authors":"Shailja Pant , Mukesh Goel , Naresh Kumar Sahoo , Qiuyan Yuan , Prangya Ranjan Rout","doi":"10.1016/j.coesh.2025.100662","DOIUrl":"10.1016/j.coesh.2025.100662","url":null,"abstract":"<div><div>Wastewater treatment is a critical process for building a water-resilient economy, ensuring pollutant removal before environmental discharge. Conventional treatment methods, though effective, are energy-intensive, reliant on chemical processes, and generate large volumes of sludge, posing economic and environmental challenges. In recent years, microalgae-based wastewater treatment has emerged as a promising alternative due to its potential for efficient nutrient removal, biomass valorization, and carbon sequestration. However, despite its advantages, large-scale implementation remains constrained by operational costs, biomass harvesting inefficiencies, and variable treatment performance. Recent advancements in techno-economic assessments, bioprocess optimization, and multiomics approaches have improved system efficiency, cost-effectiveness, and bioproduct recovery. This study reviews the latest developments, opportunities, and challenges in microalgal wastewater treatment, providing insights into its feasibility and future prospects. A comprehensive understanding of emerging technologies and integrated system approaches will be crucial in advancing microalgal-based solutions for sustainable wastewater management.</div></div>","PeriodicalId":52296,"journal":{"name":"Current Opinion in Environmental Science and Health","volume":"48 ","pages":"Article 100662"},"PeriodicalIF":6.6,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145050488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-21DOI: 10.1016/j.coesh.2025.100661
Nguyen The Tung Lam , Le Thi Lan Anh , Tran Le Luu
Greenhouse gas (GHG) emissions from industrial wastewater treatment are increasingly acknowledged as a significant contributor to climate change but remain underrepresented in mitigation strategies, especially in developing countries. Methane (CH4), nitrous oxide (N2O), and carbon dioxide (CO2) are emitted through anaerobic digestion, biological nitrogen removal, and energy-intensive operations. In Vietnam, centralized WWTPs have reported emissions as high as 476.1 MtCO2e from CH4 and 13,103.9 MtCO2e from N2O, emphasizing the need for targeted intervention. It is hypothesized that when equipped with low-emission technologies and supported by integrated approaches, such as energy recovery, optimized nutrient removal, and real-time digital monitoring, industrial wastewater systems can be transformed into climate-resilient infrastructure with significantly reduced emission intensities. In this review, mitigation pathways are synthesized through a critical evaluation of peer-reviewed literature, field-based data, and global policy frameworks. Key emission factors, including 0.0011 g CH4/g BOD5 and 0.0017 g N2O–N/g TN-influent, are analyzed alongside operational metrics. Technologies such as anaerobic membrane bioreactors (AnMBRs), partial nitritation–anammox (PN/A) processes, AME-AD systems, and photovoltaic-supported biogas recovery are comprehensively reviewed. A four-phase roadmap to net-zero emissions by 2050 is proposed, integrating life cycle assessment, AI-enhanced monitoring, and carbon finance mechanisms. Emphasis is placed on the co-benefits of GHG mitigation strategies for public health resilience, energy security, and the achievement of Sustainable Development Goals. By repositioning industrial wastewater as a strategic entry point for climate action, this study outlines actionable, cross-sectoral solutions to support decarbonization and circular economy transformation in rapidly industrializing economies. These findings hold particular relevance for journals focusing on environmental engineering, sustainable infrastructure, climate governance, and low-carbon development pathways.
工业废水处理产生的温室气体（GHG）排放日益被认为是造成气候变化的一个重要因素，但在缓解战略中所占比例仍然不足，尤其是在发展中国家。甲烷（CH4）、氧化亚氮（N2O）和二氧化碳（CO2）通过厌氧消化、生物脱氮和能源密集型操作排放。在越南，集中式污水处理厂报告的CH4排放量高达4.761亿吨二氧化碳当量，N2O排放量高达13103.9亿吨二氧化碳当量，这强调了有针对性干预的必要性。我们假设，当配备低排放技术并辅以能源回收、优化营养物去除和实时数字监测等综合方法时，工业废水系统可以转变为具有气候适应型的基础设施，显著降低排放强度。在本综述中，通过对同行评议文献、实地数据和全球政策框架的批判性评估，综合了缓解途径。关键排放因子，包括0.0011 g CH4/g BOD5和0.0017 g N2O-N /g tn，与操作指标一起分析。对厌氧膜生物反应器（anmbr）、部分硝化-厌氧氨氧化（PN/A）工艺、AME-AD系统和光伏支持的沼气回收等技术进行了全面综述。提出了到2050年实现净零排放的四阶段路线图，整合了生命周期评估、人工智能增强监测和碳融资机制。重点是温室气体缓解战略对公共卫生抗灾能力、能源安全和实现可持续发展目标的共同益处。通过将工业废水重新定位为气候行动的战略切入点，本研究概述了可操作的跨部门解决方案，以支持快速工业化经济体的脱碳和循环经济转型。这些发现对关注环境工程、可持续基础设施、气候治理和低碳发展途径的期刊尤其重要。
{"title":"Greenhouse gas emissions in industrial wastewater treatment: technologies, challenges, and strategies","authors":"Nguyen The Tung Lam , Le Thi Lan Anh , Tran Le Luu","doi":"10.1016/j.coesh.2025.100661","DOIUrl":"10.1016/j.coesh.2025.100661","url":null,"abstract":"<div><div>Greenhouse gas (GHG) emissions from industrial wastewater treatment are increasingly acknowledged as a significant contributor to climate change but remain underrepresented in mitigation strategies, especially in developing countries. Methane (CH<sub>4</sub>), nitrous oxide (N<sub>2</sub>O), and carbon dioxide (CO<sub>2</sub>) are emitted through anaerobic digestion, biological nitrogen removal, and energy-intensive operations. In Vietnam, centralized WWTPs have reported emissions as high as 476.1 MtCO<sub>2</sub>e from CH<sub>4</sub> and 13,103.9 MtCO<sub>2</sub>e from N<sub>2</sub>O, emphasizing the need for targeted intervention. It is hypothesized that when equipped with low-emission technologies and supported by integrated approaches, such as energy recovery, optimized nutrient removal, and real-time digital monitoring, industrial wastewater systems can be transformed into climate-resilient infrastructure with significantly reduced emission intensities. In this review, mitigation pathways are synthesized through a critical evaluation of peer-reviewed literature, field-based data, and global policy frameworks. Key emission factors, including 0.0011 g CH<sub>4</sub>/g BOD<sub>5</sub> and 0.0017 g N<sub>2</sub>O–N/g TN-influent, are analyzed alongside operational metrics. Technologies such as anaerobic membrane bioreactors (AnMBRs), partial nitritation–anammox (PN/A) processes, AME-AD systems, and photovoltaic-supported biogas recovery are comprehensively reviewed. A four-phase roadmap to net-zero emissions by 2050 is proposed, integrating life cycle assessment, AI-enhanced monitoring, and carbon finance mechanisms. Emphasis is placed on the co-benefits of GHG mitigation strategies for public health resilience, energy security, and the achievement of Sustainable Development Goals. By repositioning industrial wastewater as a strategic entry point for climate action, this study outlines actionable, cross-sectoral solutions to support decarbonization and circular economy transformation in rapidly industrializing economies. These findings hold particular relevance for journals focusing on environmental engineering, sustainable infrastructure, climate governance, and low-carbon development pathways.</div></div>","PeriodicalId":52296,"journal":{"name":"Current Opinion in Environmental Science and Health","volume":"47 ","pages":"Article 100661"},"PeriodicalIF":6.6,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145026401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-20DOI: 10.1016/j.coesh.2025.100660
Basanta Kumar Biswal, Rajasekhar Balasubramanian
Biodegradable plastics have received considerable attention as an eco-friendly material to replace non-biodegradable plastics. This paper critically reviews recent studies on the occurrence, fate, transport, and ecotoxicity of biodegradable and non-biodegradable microplastics (MPs) in the aquatic environment. The fate and transport of MPs largely depend on their properties, hydrodynamic conditions, and climatic factors. MPs show various levels of ecotoxicity toward aquatic biota. The overall aim of this review is to improve the current understanding on the fate and transport of MPs and help regulatory agencies to develop effective strategies for mitigation of pollution, caused by MPs in the aquatic environment.
{"title":"A review on fate and transport of biodegradable and non-biodegradable microplastics in the aquatic environment","authors":"Basanta Kumar Biswal, Rajasekhar Balasubramanian","doi":"10.1016/j.coesh.2025.100660","DOIUrl":"10.1016/j.coesh.2025.100660","url":null,"abstract":"<div><div>Biodegradable plastics have received considerable attention as an eco-friendly material to replace non-biodegradable plastics. This paper critically reviews recent studies on the occurrence, fate, transport, and ecotoxicity of biodegradable and non-biodegradable microplastics (MPs) in the aquatic environment. The fate and transport of MPs largely depend on their properties, hydrodynamic conditions, and climatic factors. MPs show various levels of ecotoxicity toward aquatic biota. The overall aim of this review is to improve the current understanding on the fate and transport of MPs and help regulatory agencies to develop effective strategies for mitigation of pollution, caused by MPs in the aquatic environment.</div></div>","PeriodicalId":52296,"journal":{"name":"Current Opinion in Environmental Science and Health","volume":"47 ","pages":"Article 100660"},"PeriodicalIF":6.6,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145010140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-19DOI: 10.1016/j.coesh.2025.100663
Agha Zeeshan Ali , Sanjeeb Mohapatra , Jan Peter van der Hoek , Henri Spanjers
{"title":"Erratum to “BiVO4-based photoanodes for the photoelectrocatalytic removal of trace organic pollutants from water: A mini review on recent developments” [Curr Opin Environ Sci Health 45 (June 2025) 1–1 100615]","authors":"Agha Zeeshan Ali , Sanjeeb Mohapatra , Jan Peter van der Hoek , Henri Spanjers","doi":"10.1016/j.coesh.2025.100663","DOIUrl":"10.1016/j.coesh.2025.100663","url":null,"abstract":"","PeriodicalId":52296,"journal":{"name":"Current Opinion in Environmental Science and Health","volume":"48 ","pages":"Article 100663"},"PeriodicalIF":6.6,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-13DOI: 10.1016/j.coesh.2025.100655
Le Thi Lan Anh, Tran Le Luu
Greenhouse gas (GHG) emissions from wastewater treatment plants (WWTPs), including carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O), are significant contributors to global climate change. This study addresses the lack of data in Vietnam's fragmented and under-monitored wastewater systems by integrating field measurements, dynamic modeling, and life cycle assessment (LCA) to quantify GHG emissions from 29 centralized plants and multiple decentralized systems. The results indicate that CH4 and N2O emissions amount to 378 and 79.7 million tons of CO2-equivalent annually, with local emission factors significantly exceeding the IPCC Tier 1 defaults. Methane is primarily produced from anaerobic sludge digestion and septic tanks, while N2O arises from nitrogen removal processes under low dissolved oxygen (DO) conditions. Indirect CO2 emissions from electricity and fuel consumption contribute an additional 17 % to the sector's GHG footprint. Technologies such as Johkasou, Anammox, and biogas recovery demonstrate strong mitigation potential, with Johkasou reducing emissions by approximately 16 % and Anammox lowering N2O outputs. Additional solutions including photovoltaic (PV) systems, machine learning-based process optimization, and microbial fuel cells (MFCs) offer promising pathways for operational efficiency and long-term sustainability. These findings provide critical inputs for Vietnam's carbon market implementation and align with global efforts to improve the accuracy of GHG accounting in wastewater systems.
{"title":"Greenhouse gas emissions from municipal wastewater treatment: Global insights and Vietnam's approach","authors":"Le Thi Lan Anh, Tran Le Luu","doi":"10.1016/j.coesh.2025.100655","DOIUrl":"10.1016/j.coesh.2025.100655","url":null,"abstract":"<div><div>Greenhouse gas (GHG) emissions from wastewater treatment plants (WWTPs), including carbon dioxide (CO<sub>2</sub>), methane (CH<sub>4</sub>), and nitrous oxide (N<sub>2</sub>O), are significant contributors to global climate change. This study addresses the lack of data in Vietnam's fragmented and under-monitored wastewater systems by integrating field measurements, dynamic modeling, and life cycle assessment (LCA) to quantify GHG emissions from 29 centralized plants and multiple decentralized systems. The results indicate that CH<sub>4</sub> and N<sub>2</sub>O emissions amount to 378 and 79.7 million tons of CO<sub>2</sub>-equivalent annually, with local emission factors significantly exceeding the IPCC Tier 1 defaults. Methane is primarily produced from anaerobic sludge digestion and septic tanks, while N<sub>2</sub>O arises from nitrogen removal processes under low dissolved oxygen (DO) conditions. Indirect CO<sub>2</sub> emissions from electricity and fuel consumption contribute an additional 17 % to the sector's GHG footprint. Technologies such as Johkasou, Anammox, and biogas recovery demonstrate strong mitigation potential, with Johkasou reducing emissions by approximately 16 % and Anammox lowering N<sub>2</sub>O outputs. Additional solutions including photovoltaic (PV) systems, machine learning-based process optimization, and microbial fuel cells (MFCs) offer promising pathways for operational efficiency and long-term sustainability. These findings provide critical inputs for Vietnam's carbon market implementation and align with global efforts to improve the accuracy of GHG accounting in wastewater systems.</div></div>","PeriodicalId":52296,"journal":{"name":"Current Opinion in Environmental Science and Health","volume":"47 ","pages":"Article 100655"},"PeriodicalIF":6.6,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144919784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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