{"title":"Uncovering the neglected feedback of accumulated polyphenol toward self-enhanced electro-polymerization.","authors":"Yang Yu, Peng Wang, Hetao Liu, Zewen Wang, Xian Pan, Ruilei Wang, Huachang Jin, Qian Li, Yingtang Zhou, Dongzhi Chen","doi":"10.1016/j.watres.2026.126285","DOIUrl":"10.1016/j.watres.2026.126285","url":null,"abstract":"<p><p>Electro-polymerization has emerged as a promising wastewater treatment process due to the merits of zero CO<sub>2</sub> emission, little chemical/energy input, and resource recovery. However, the counterreaction of surface-adsorbed polymer toward the subsequent electro-polymerization remains indeterminate. Herein, we tried to explore the neglected feedback of surface-adsorbed polymer toward electro-polymerization. We demonstrated that the generated polyphenol gradually accumulated onto the MoO<sub>2</sub>-based electroactive membrane, which in situ established an interfacial hydrophobicity microenvironment. This drove the formation of Mo(Ⅵ), with its steady-state concentration elevated by two orders of magnitude, and in turn promoted the phenoxy radical generation, finally triggering an unexpected self-enhanced electro-polymerization. Consequently, an over 100% electronic utilization efficiency, which was almost unrealizable in the conventional electro-oxidation system, was obtained. In addition, the surface-covered polyphenol could be recovered by a facile polarity reversal method, maximizing net profit of 53.9 ¥·m<sup>-3</sup>. These findings shed light on the underlying potential interaction between the surface-covered polymer and the electrode.</p>","PeriodicalId":443,"journal":{"name":"Water Research","volume":"303 ","pages":"126285"},"PeriodicalIF":12.8,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148283045","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":"Acclimation of microbial communities in low dissolved oxygen and low pH driven start-up of microaerobic activated sludge process to recover ammonium from fermentation industrial wastewater.","authors":"Kengo Momiuchi, Tomo Aoyagi, Takuma Suzuki, Taku Fujiwara, Akihiko Terada, Hidehiro Sugiura, Tetsuya Abe, Tomoyuki Hori","doi":"10.1016/j.watres.2026.126305","DOIUrl":"10.1016/j.watres.2026.126305","url":null,"abstract":"<p><p>Although microaerobic activated sludge process has been developed to convert nitrogen compounds in fermentation industrial wastewater to ammonium, its applicability at the industrially relevant situations is largely unknown. Here, responses of the treatment performances and microbial communities to the sequential settings of the low DO and/or low pH conditions for the effective start-up of the practically downscaled processes fed with the simulated wastewater derived from real streams were investigated by the 3D fluorescence spectroscopy, LC-TOF-MS, qPCR of nitrification-related functional genes and high-throughput sequencing of 16S/18S rRNA genes. The ammonium conversion and retention rates increased rapidly to 77.6-103.6% in all the settings, highlighting the relevance of the process in the context of nitrogen recovery with a combination of the downstream concentration and separation steps in practical application. The advancement was associated with the formation of the stable whole prokaryotic communities and the decline (∼2 order decreases in gene copies) of the abundant nitrifier ammonia-oxidizing bacteria (AOB). The hydrolytic and/or proteolytic Extensimonas soli and Thermomonas haemolytica commonly proliferated and predominated at ∼51.1% and ∼26.5% of the total, suggesting their central involvements in ammonification. The TOC removal rates were relatively high (>88.3%), although exhibiting the trade-off relationship with nitrogen recovery, for which some dissolved organic residues, e.g., amino acid-related substances, were identified. An issue of this process was the increases in the treated wastewater turbidities but could be alleviated by DO control. The eukaryotes Amoebozoa and Ochrophyta, as well as AOB, were responsible for the sludge flocculation, owing to the comparison with the conventional nitrification-denitrification process with the low turbidities. Consequently, this study illuminated the high adaptabilities of microbial communities to the changing conditions for establishment of the novel nitrogen circular technology.</p>","PeriodicalId":443,"journal":{"name":"Water Research","volume":"303 ","pages":"126305"},"PeriodicalIF":12.8,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148283005","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}
Water ResearchPub Date : 2026-09-15Epub Date: 2026-06-10DOI: 10.1016/j.watres.2026.126276
Haipeng Wu, Yingying Huang, Xiaojing Shao, Xuechu Chen, Ilia Ostrovsky
{"title":"Surviving the estuary: how colony morphology and nutrient history shape Microcystis salt tolerance.","authors":"Haipeng Wu, Yingying Huang, Xiaojing Shao, Xuechu Chen, Ilia Ostrovsky","doi":"10.1016/j.watres.2026.126276","DOIUrl":"10.1016/j.watres.2026.126276","url":null,"abstract":"<p><p>Harmful freshwater cyanobacteria, such as Microcystis, are increasingly reported in brackish estuaries, yet the extracellular mechanisms that allow freshwater colonies to withstand salt stress in nature remain unresolved. This study combined field surveys with in situ bottle and enclosure experiments to examine how colony size, extracellular polysaccharides (EPS), and upstream nitrogen availability shape the salinity tolerance of Microcystis transported from upstream lakes to the brackish water. Larger colonies were more abundant under higher salinity in the estuary, and redundancy analysis showed that salinity and water temperature were the primary correlates of colony size distributions. In situ suspended bottle experiments demonstrated that larger colonies maintained positive growth at higher salinity thresholds than small colonies, and that EPS accumulation increased with colony size. Small colonies showed rapid EPS synthesis under low-salt stress but were unable to sustain this response once salinity exceeded 10-12‰. Enclosure experiments further revealed that low nitrogen availability in upstream freshwater promoted the formation of larger colonies, enhanced EPS production, and strengthened physiological resistance to salt stress during downstream transport. These findings indicate that colony morphology and EPS act as key mediators of Microcystis survival along freshwater-estuarine gradients, and that nitrogen limitation upstream can facilitate bloom persistence in brackish water. Integrating colony size, EPS dynamics, and nutrient regimes into monitoring and management frameworks will improve early warning capacity for bloom propagation in estuaries under increasing anthropogenic and climate-driven pressures.</p>","PeriodicalId":443,"journal":{"name":"Water Research","volume":"303 ","pages":"126276"},"PeriodicalIF":12.8,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148283015","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}
Water ResearchPub Date : 2026-09-15Epub Date: 2026-06-01DOI: 10.1016/j.watres.2026.126148
Jiao Lin, Jishen Zhang, Renwu Zhou, Li Guo, Dingxin Liu, Mingzhe Rong, Michael G Kong, Kostya Ostrikov
{"title":"Corrigendum to \"Plasma-enhanced microbial electrolytic disinfection: Decoupling electro- and plasma-chemistry in plasma-electrolyzed oxidizing water using ion-exchange membranes\" [Water Research, 225(2022), 119174].","authors":"Jiao Lin, Jishen Zhang, Renwu Zhou, Li Guo, Dingxin Liu, Mingzhe Rong, Michael G Kong, Kostya Ostrikov","doi":"10.1016/j.watres.2026.126148","DOIUrl":"10.1016/j.watres.2026.126148","url":null,"abstract":"","PeriodicalId":443,"journal":{"name":"Water Research","volume":" ","pages":"126148"},"PeriodicalIF":12.8,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148142314","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}
Water ResearchPub Date : 2026-09-15Epub Date: 2026-06-28DOI: 10.1016/j.watres.2026.126216
Weijian Zhang, Jingyi Feng, Xueyan Bai, Lu Jiang, Lei Gao, Siyu Gu
{"title":"Retraction notice to \"Efficient adsorption and degradation of Di-(2-ethylhexyl) phthalate (DEHP) by Nanomaterial-modified biochar: insights into microbial communities, functional genes, and metabolic pathways\" [Water Research 289 (2026) 124986].","authors":"Weijian Zhang, Jingyi Feng, Xueyan Bai, Lu Jiang, Lei Gao, Siyu Gu","doi":"10.1016/j.watres.2026.126216","DOIUrl":"10.1016/j.watres.2026.126216","url":null,"abstract":"","PeriodicalId":443,"journal":{"name":"Water Research","volume":" ","pages":"126216"},"PeriodicalIF":12.8,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148337213","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}
Water ResearchPub Date : 2026-09-15Epub Date: 2026-06-28DOI: 10.1016/j.watres.2026.126337
Jessica L Kevill, Margaret E Knight, Yashi Jain, Karina A Marsden, Rachel C Williams, Kate Herridge, Winnie Courtene-Jones, Peter Robins, Shelagh K Malham, Davey L Jones
{"title":"Corrigendum to \"Fate and transport of viruses, bacteria and antimicrobial resistance associated with wet wipes and microplastics through wastewater treatment to coastal waters\" [Water Research (2026) /126281].","authors":"Jessica L Kevill, Margaret E Knight, Yashi Jain, Karina A Marsden, Rachel C Williams, Kate Herridge, Winnie Courtene-Jones, Peter Robins, Shelagh K Malham, Davey L Jones","doi":"10.1016/j.watres.2026.126337","DOIUrl":"10.1016/j.watres.2026.126337","url":null,"abstract":"","PeriodicalId":443,"journal":{"name":"Water Research","volume":" ","pages":"126337"},"PeriodicalIF":12.8,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148343627","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}
Water ResearchPub Date : 2026-09-15Epub Date: 2026-06-14DOI: 10.1016/j.watres.2026.126299
Lingzhi Xie, Huizhen Li, Jingru Zhang, W Tyler Mehler, Jianghua Yang, Zhiqiang Yu, Jing You
{"title":"Beyond chemical metrics: Incorporating fish and zooplankton community structures into environmental risk assessment of industrial wastewater-impacted rivers.","authors":"Lingzhi Xie, Huizhen Li, Jingru Zhang, W Tyler Mehler, Jianghua Yang, Zhiqiang Yu, Jing You","doi":"10.1016/j.watres.2026.126299","DOIUrl":"10.1016/j.watres.2026.126299","url":null,"abstract":"<p><p>Industrial wastewater discharges pose significant but incompletely understood risk to the ecological health of receiving rivers. Conventional risk assessments focus predominantly on chemical exposure, largely overlooking biological community responses that integrate cumulative and synergistic stress. Here, we combined environmental DNA (eDNA) metabarcoding of fish and zooplankton communities with a weight of evidence (WoE) framework using Grey TOPSIS to assess ecological risk in rivers impacted by aquaculture, electronics, and printing/dyeing effluents in Guangdong Province, China. The results revealed consistent biotic community convergence across all impacted rivers, with non-native fish exceeding 50% of relative abundance and native biodiversity declining significantly. Salinity, conductivity, and the prevalence of non-native species emerged as primary drivers of community shifts, rather than individual chemical pollutants. The WoE classified 38% of industrial-impacted sites as moderate risk. In contrast, evaluations based solely on water quality parameters classified 46% of sites as high risk, revealing substantial discrepancy between stressor-based and effect-based assessments. These results demonstrate that integrating eDNA-derived community metrics into a structured WoE framework fundamentally alters risk interpretation and provides indispensable biological evidence for assessing ecosystem impairment. We conclude that robust ecological risk assessment in industrially impacted rivers should incorporate community-level responses, rather than relying solely on chemical criteria.</p>","PeriodicalId":443,"journal":{"name":"Water Research","volume":"303 ","pages":"126299"},"PeriodicalIF":12.8,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148283018","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}
Water ResearchPub Date : 2026-09-15Epub Date: 2026-06-29DOI: 10.1016/j.watres.2026.126353
Bram Geysels, Tjisse Hiemstra, Arnoldus W P Vermeer, Jan E Groenenberg
{"title":"Corrigendum to \"A mechanistic surface complexation model for glyphosate adsorption to ferrihydrite in competition with phosphate\" [Water Research 288 (2026) 124634].","authors":"Bram Geysels, Tjisse Hiemstra, Arnoldus W P Vermeer, Jan E Groenenberg","doi":"10.1016/j.watres.2026.126353","DOIUrl":"10.1016/j.watres.2026.126353","url":null,"abstract":"","PeriodicalId":443,"journal":{"name":"Water Research","volume":" ","pages":"126353"},"PeriodicalIF":12.8,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148350233","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}
Water ResearchPub Date : 2026-09-15Epub Date: 2026-06-15DOI: 10.1016/j.watres.2026.126307
Qingqing Wang, Yihan Feng, Chao Zhu, Chun-Yu Lai, Wenkang Lu, Jun Wang, Qile Fang, Shuang Song, Yi Shen
{"title":"Microplastic-derived dissolved organic matter mediates phenol oligomerization via coupled photo-redox pathways.","authors":"Qingqing Wang, Yihan Feng, Chao Zhu, Chun-Yu Lai, Wenkang Lu, Jun Wang, Qile Fang, Shuang Song, Yi Shen","doi":"10.1016/j.watres.2026.126307","DOIUrl":"10.1016/j.watres.2026.126307","url":null,"abstract":"<p><p>Pollutant removal through polymerization represents a promising strategy for reducing carbon emissions and improving energy efficiency during water treatment. Given the ubiquitous presence of microplastics in aquatic ecosystems, however, it remains unclear whether such polymerization pathways emerge when dissolved organic matter derived from microplastics (MP-DOM) coexists with organic pollutants. Here, biodegradable and non-biodegradable microplastics, poly (butylene adipate-co-terephthalate) (PBAT) and polyethylene (PE), were selected as representative microplastics, with phenol employed as a model pollutant to investigate MP-DOM-mediated transformation mechanisms. By integrating Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS), UPLC-MS/MS, and FTIR, we simultaneously resolved MP-DOM molecular evolution and phenol transformation products. The results demonstrate that PBAT-DOM increased phenol removal from 22.8% (direct photolysis) to 91.1% under irradiation, likely involving the synergistic action of <sup>1</sup>O<sub>2</sub>-mediated oxidation and photo-redox electron transfer, while itself undergoing carboxylation, methylation, and dehydration, suggesting its role as a photo-redox-active matrix. This process yielded hydroquinone and trimers, alongside an increased signal intensity of polymers ((C<sub>6</sub>H<sub>2</sub>)<sub>n</sub>)-species in phenol photolysis with PBAT-DOM. Analogous polymerization products were observed with electron-withdrawing substituted phenols (e.g., p-Nitrophenol), indicating the generalizability of this pathway across structurally related contaminants. This study uncovers a previously overlooked function of MP-DOM as an active mediator of photochemical oligomerization via coupled photo-redox processes, offering novel mechanistic insights into microplastic-driven photochemistry and an improved framework for assessing the environmental behavior and ecological risks of microplastics in aquatic systems.</p>","PeriodicalId":443,"journal":{"name":"Water Research","volume":"303 ","pages":"126307"},"PeriodicalIF":12.8,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148283031","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}