Manish Kumar , Aseem Saxena , Sachin Tripathi , Durga Prasad Panday , Juan Antonio Torres-Martínez
{"title":"Harnessing microplastic contaminant hydro(bio)logy: Proxies for flood impact, surface-groundwater connectivity, and urbanisation","authors":"Manish Kumar , Aseem Saxena , Sachin Tripathi , Durga Prasad Panday , Juan Antonio Torres-Martínez","doi":"10.1016/j.coesh.2025.100696","DOIUrl":"10.1016/j.coesh.2025.100696","url":null,"abstract":"<div><div>Urban runoff, shaped by human activities and land use, is a key source of microplastics (MPs), contributing to the contamination of rivers, groundwater, and coastal systems. Understanding MP sources, variability, and behaviour in urban runoff remains challenging due to their diverse origins and dynamic transport processes. Flood events accelerate the mobilisation of MPs, redistributing particles across catchments and ecosystems. Processes like fragmentation, ageing, and retention alter MPs’ size, shape, and surface properties, influencing their transport, accumulation, and interactions in different environments. This opinion article examines the potential of MP profiling to evaluate the extent and pathways of surface-groundwater interactions in urbanizing landscapes, with a focus on flood impacts. The study further highlights the coexistence of MPs with other pollutants and their potential infiltration into groundwater. Through analysis of microplastic contaminant loads, composition, and transport during and after flood events, this opinion demonstrates their dual function as markers of flood occurrences and tools for evaluating hydrological connectivity altered by urban development. The findings highlight the promise of MP hydro(bio)logy as a sensitive, cost-effective approach for integrated water management, improved flood impact assessment, and the formulation of urban planning strategies tailored to mitigate environmental risks in rapidly changing catchments.</div></div>","PeriodicalId":52296,"journal":{"name":"Current Opinion in Environmental Science and Health","volume":"49 ","pages":"Article 100696"},"PeriodicalIF":6.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145840764","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}
Priyansha Gupta , Manuel D. Arciniegas-Pérez , Héctor A. Barrios-Piña
{"title":"Impact of brine discharge from desalination plants on marine ecosystems: A review","authors":"Priyansha Gupta , Manuel D. Arciniegas-Pérez , Héctor A. Barrios-Piña","doi":"10.1016/j.coesh.2025.100693","DOIUrl":"10.1016/j.coesh.2025.100693","url":null,"abstract":"<div><div>Desalination addresses freshwater scarcity, but hypersaline brine discharge raises ecological and health concerns. This review synthesizes 15 years of research on desalination brine impacts. Key stressors, high salinity, temperature, alkalinity, and metals, degrade water quality, biodiversity, and ecological balance. Effects include 40% plankton loss and 25–30% seagrass decline near outfalls. Elevated ions and residual chemicals disrupt microbes, fostering pathogens and disease. Regulatory frameworks remain fragmented. Advances in AI modeling and resource recovery offer mitigation, yet knowledge gaps persist on cumulative and synergistic impacts. Sustainable desalination requires integrated monitoring, AI-based management, and harmonized global regulations for ecosystem protection.</div></div>","PeriodicalId":52296,"journal":{"name":"Current Opinion in Environmental Science and Health","volume":"49 ","pages":"Article 100693"},"PeriodicalIF":6.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145790884","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}
{"title":"Impact of macroplastic and microplastic litter pollution on terrestrial soil–plant ecosystems: Pathways, fate, and transport","authors":"Deval Jugraj Singh , Anil Kumar Dikshit , Sunil Kumar","doi":"10.1016/j.coesh.2025.100694","DOIUrl":"10.1016/j.coesh.2025.100694","url":null,"abstract":"<div><div>Continuous accumulation of plastic litter in terrestrial ecosystems acts as a major pathway for the macroplastics (MaPs) and microplastics (MiPs) contamination into marine environment. This review synthesizes current knowledge on the sources, fate, and transport of plastic litter within soil–plant systems. It also presents a novel synthesis that connects plastic litter–induced modifications in soil properties and nutrient dynamics with physiological stress, root distortion, and reduced photosynthetic performance in plants. It was found that MaPs primarily affect soil structure by blocking pores and disrupting aggregation, whereas MiP impairs seed germination, nutrient uptake, photosynthesis, and redox imbalance via oxidative stress and leachates of toxic additives. Evidence indicates the uptake and vascular translocation of MiP in edible tissues causes potential risks to food chain. Finally, future research directions were proposed on soil remediation strategies, assessing long-term impact of MiPs and nanoplastics on plant genetic cycle.</div></div>","PeriodicalId":52296,"journal":{"name":"Current Opinion in Environmental Science and Health","volume":"49 ","pages":"Article 100694"},"PeriodicalIF":6.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145790845","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}
{"title":"Parabolic solar collectors for sustainable water treatment: A review of applications, advancements and future directions","authors":"Paramjeet Singh Paliyal , Surajit Mondal","doi":"10.1016/j.coesh.2025.100691","DOIUrl":"10.1016/j.coesh.2025.100691","url":null,"abstract":"<div><div>The increasing global demand for clean and sustainable water treatment solutions has accelerated research into Parabolic Solar Collectors (PSCs) for solar-driven water purification. PSCs utilize concentrated solar energy to achieve high temperatures, facilitating critical water treatment processes such as desalination, pathogen inactivation, and heavy metal removal. This review explores the latest advancements in PSC technology, including high-efficiency selective coatings, hybrid photovoltaic-thermal (PVT) integration, nanofluid-based heat transfer, AI-driven automation, and modular system designs, which have significantly enhanced efficiency, scalability, and reliability. A comparative analysis of various PSC-based water treatment strategies is presented, highlighting their advantages, limitations, and performance metrics. Additionally, a correlation matrix demonstrates the interdependencies between key technological innovations in PSCs and their impact on energy efficiency and sustainability. While PSC technology has shown great potential in decentralized and industrial water treatment, challenges such as high initial costs, material durability, and operational optimization persist. Future research will focus on cost-effective materials, advanced automation, and hybrid energy storage systems to further improve the efficacy and accessibility of PSCs for global water treatment applications.</div></div>","PeriodicalId":52296,"journal":{"name":"Current Opinion in Environmental Science and Health","volume":"49 ","pages":"Article 100691"},"PeriodicalIF":6.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145737974","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}
{"title":"Message from the new Editor-in-Chief","authors":"Dimitra Lambropoulou","doi":"10.1016/j.coesh.2025.100689","DOIUrl":"10.1016/j.coesh.2025.100689","url":null,"abstract":"","PeriodicalId":52296,"journal":{"name":"Current Opinion in Environmental Science and Health","volume":"49 ","pages":"Article 100689"},"PeriodicalIF":6.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145645685","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}
Barbara Sowińska-Świerkosz , Alexandros Stefanakis
{"title":"Constructed wetlands as a multifunction landscape","authors":"Barbara Sowińska-Świerkosz , Alexandros Stefanakis","doi":"10.1016/j.coesh.2025.100704","DOIUrl":"10.1016/j.coesh.2025.100704","url":null,"abstract":"<div><div>The vast majority of constructed wetlands (CWs) international studies focus on their treatment functions, while relatively few address their landscape roles. This paper identifies key aspects that can strengthen the landscape outcomes of CWs by linking them to landscape quality (LQ) dimensions. The results indicate that greater attention should be given to the design stage and that, where possible, CWs should be integrated into urban park systems. In this way, CWs can be recognized as sustainable landscape projects that combine environmental, economic, and social dimensions, enhancing the well-being of both human and non-human actors.</div></div>","PeriodicalId":52296,"journal":{"name":"Current Opinion in Environmental Science and Health","volume":"49 ","pages":"Article 100704"},"PeriodicalIF":6.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146022405","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}
{"title":"Treatment wetlands in the framework of the revised European Union Urban Wastewater Treatment Directive 2024","authors":"Mathieu Gautier","doi":"10.1016/j.coesh.2025.100702","DOIUrl":"10.1016/j.coesh.2025.100702","url":null,"abstract":"<div><div>The revised European Union Urban Wastewater Treatment Directive 2024/3019 introduces significant changes to the urban wastewater management framework across the European Union. Among its most notable developments are reinforced requirements for nutrient removal, the treatment of micropollutants, the management of urban stormwater, and broader ambitions for energy neutrality and water reuse. In this context, nature-based solutions appear increasingly relevant. Treatment wetlands including vertical flow and hybrid and bioelectrochemical systems offer solutions aligned with these objectives. This article examines recent innovations in constructed wetlands and evaluates their potential role in fulfilling the goals of the new directive, especially for small-scale systems.</div></div>","PeriodicalId":52296,"journal":{"name":"Current Opinion in Environmental Science and Health","volume":"49 ","pages":"Article 100702"},"PeriodicalIF":6.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146022407","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}
Srinidhi Lokesh, Yasha Jathan, Eric A. Marchand, David Hanigan
{"title":"Recent improvements in understanding the impacts of wildfire on disinfection byproduct formation potential","authors":"Srinidhi Lokesh, Yasha Jathan, Eric A. Marchand, David Hanigan","doi":"10.1016/j.coesh.2025.100700","DOIUrl":"10.1016/j.coesh.2025.100700","url":null,"abstract":"<div><div>Wildfires are increasing in frequency and severity and pose a significant threat to drinking water safety by altering the quantity and chemical nature of disinfection byproduct (DBP) precursors. This review critically synthesizes recent field and laboratory studies to provide a comprehensive understanding of wildfire's impact on DBP formation. Published literature has demonstrated that wildfires lead to higher concentrations of regulated DBPs, which result in a greater number of regulatory violations. These effects are primarily driven by the increased precipitation-driven export of dissolved organic matter (DOM) from burned soils and ash deposits during post-fire runoff events. However, the reactivity (mass DBP formed/mass DOM) of fire-altered dissolved organic matter in forming carbonaceous DBPs (C-DBPs) is often reduced compared to pre-fire DOM. In contrast, the reactivity of DOM to form more toxicologically potent nitrogenous DBPs (N-DBPs) is, in many cases, increased by fire. This shift is exacerbated in wildland–urban interface (WUI) fires, where the combustion of anthropogenic materials can increase the potential toxicity of the resulting DBP mixture by over 100-fold compared to vegetative ash. Further, wildfire can also alter DBP speciation by mobilizing inorganic halides. The release of bromide from vegetation and, critically, iodide from structural materials in WUI fires can lead to the formation of brominated and iodinated DBPs which also potentially results in increased toxicity of the mixture. These findings highlight significant challenges to the production of safe drinking water post-fire and underscore the need for a shift in DBP regulations, moving beyond regulated C-DBPs.</div></div>","PeriodicalId":52296,"journal":{"name":"Current Opinion in Environmental Science and Health","volume":"49 ","pages":"Article 100700"},"PeriodicalIF":6.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145925881","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}
{"title":"Algae-derived organic matter in drinking water sources and the formation of disinfection byproducts: A critical review","authors":"Marlena M. Cheshire, William A. Mitch","doi":"10.1016/j.coesh.2025.100675","DOIUrl":"10.1016/j.coesh.2025.100675","url":null,"abstract":"<div><div>The proliferation of algal blooms in freshwater is a water quality concern. Algae release algal organic matter (AOM) that is a disinfection byproduct (DBP) precursor. Monitoring blooms remains challenging as cell concentration and diversity vary across seasons and locations. Compared to natural organic matter (NOM), AOM has distinct characteristics. The low aromaticity and high nitrogen content of AOM favor unregulated nitrogen-containing DBPs, such as haloacetonitriles and haloacetamides, over regulated trihalomethanes, and haloacetic acids. Research utilizing ultra-high-resolution mass spectrometry found that AOM is an important precursor of >2-carbon DBPs. With prevalent fatty acids and peptides, studies have identified chlorinated biomolecule formation from AOM.</div></div>","PeriodicalId":52296,"journal":{"name":"Current Opinion in Environmental Science and Health","volume":"48 ","pages":"Article 100675"},"PeriodicalIF":6.6,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145417057","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}