Water Research最新文献

{"title":"The effect of the aging processes of Ulva prolifera-derived dissolved organic nitrogen associated with green tide on the diatoms-dinoflagellates succession in the Southern Yellow Sea, China","authors":"Xinyu Li ,&nbsp;Cui Zeng ,&nbsp;Xiurong Han ,&nbsp;Liqiang Fan ,&nbsp;Jing Zhao ,&nbsp;Yingzhe Wang ,&nbsp;Xiulin Wang ,&nbsp;Keqiang Li","doi":"10.1016/j.watres.2025.123370","DOIUrl":"10.1016/j.watres.2025.123370","url":null,"abstract":"<div><div>Multitudinous dissolved organic nitrogen (DON) enters seawater from <em>Ulva prolifera</em> green tides impacting phytoplankton community structure in the Yellow Sea. Field investigations and cultural experiments on <em>U. prolifera</em>-derived DON aging revealed its regulatory effects. The green-tide outbreak area of the Southern Yellow Sea exhibits a seasonal cycle where dominance shifts from diatoms to dinoflagellates effected by young to aging <em>U. prolifera</em>-derived DON from summer to spring. Diatom abundance rose significantly following the summer green tide outbreak, fueled by young, protein-rich DON released by <em>U. prolifera</em>. After autumn and winter aging, <em>U. prolifera</em>-derived DON was dominant from protein-like to humic-like components, and dinoflagellates bloomed in the green tide outbreak area. An aging <em>U. prolifera</em>-derived DON adding culture experiment of <em>Chaetoceros curvisetus</em> and <em>Prorocentrum minimum</em> proved that old and young DON promoted dinoflagellate and diatom growth, respectively. Diatoms preferred 0 and 12 days-aged DON (DON₀ and DON₁₂) with tyrosine B and tryptophan T components, whereas dinoflagellate favored 80 days-aged DON (DON₈₀) with humic acid E and UV fulvic acid A components. DON₀ and DON₁₂ can be absorbed by diatoms with higher uptake (<em>k</em>_up) and growth (<em>k</em>_G) constants than by dinoflagellates under low leucine aminopeptidase (LAP) conditions. Dinoflagellates absorb old DON with higher <em>k</em>_up and <em>k</em>_G values under higher LAP concentrations than diatoms. This was consistent with the loop of <em>U. prolifera</em>-derived DON turning over the seasonal succession of diatom dinoflagellates in the green-tide outbreak area. This study revealed mechanism of seasonal dinoflagellate-<em>U. prolifera</em>-diatom cycle, and provided new insights for impacts of <em>U. prolifera</em> green tides on phytoplankton regime shift, thus, acting as a basis for marine management strategies.</div></div>","PeriodicalId":443,"journal":{"name":"Water Research","volume":"277 ","pages":"Article 123370"},"PeriodicalIF":11.4,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143473428","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":"ROS-induced stress promotes enrichment and emergence of antibiotic resistance in conventional activated sludge processes","authors":"Bharat Manna ,&nbsp;Xueyang Zhou ,&nbsp;Naresh Singhal","doi":"10.1016/j.watres.2025.123366","DOIUrl":"10.1016/j.watres.2025.123366","url":null,"abstract":"<div><div>Since the Great Oxidation Event 2.4 billion years ago, microorganisms have evolved sophisticated responses to oxidative stress. These ancient adaptations remain relevant in modern engineered systems, particularly in conventional activated sludge (CAS) processes, which serve as significant reservoirs of antibiotic resistance genes (ARGs). While ROS-induced stress responses are known to promote ARG enrichment/emergence in pure cultures, their impact on ARG dynamics in wastewater treatment processes remains unexplored. Shotgun-metagenomics analysis of two hospital wastewater treatment plants showed that only 35–53 % of hospital effluent resistome was retained in final effluent. Despite this reduction, approximately 29–36 % of ARGs in CAS showed higher abundance than upstream stages, of which 20–22 % emerged <em>de novo</em>. Beta-lactamases and efflux pumps constituted nearly 47–53 % of these enriched ARGs. These ARGs exhibited significant correlations (<em>p</em> &lt; 0.05) with ROS stress response genes (<em>oxyR, soxR, sodAB, katG</em> and <em>ahpCF</em>). The CAS resistome determined 58–75 % of the effluent ARG profiles, indicating treatment processes outweigh influent composition in shaping final resistome. Proof-of-concept batch reactor experiments confirmed increased ROS and ARG levels under high dissolved oxygen (8 mg/L) compared to low oxygen (2 mg/L) concentrations. Untargeted metaproteomics revealed higher expression of resistant proteins (e.g., OXA-184, OXA-576, PME-1, RpoB2, Tet(W/32/O)) under elevated ROS levels. Our findings demonstrate that CAS processes actively shape effluent resistome through ROS-mediated selection, indicating that treatment processes, rather than initial wastewater composition, determine final ARG profiles. This study indicates that the emergence of ARGs needs to be considered as an integral aspect of wastewater treatment design and operation to prevent antibiotic resistance dissemination.</div></div>","PeriodicalId":443,"journal":{"name":"Water Research","volume":"277 ","pages":"Article 123366"},"PeriodicalIF":11.4,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143470880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lactate production from lactose-rich wastewater: A comparative study on reactor configurations to maximize conversion rates and efficiencies","authors":"Monika Temovska ,&nbsp;Richard Hegner ,&nbsp;Andrés E. Ortiz-Ardila ,&nbsp;Joseph G. Usack ,&nbsp;Largus T. Angenent","doi":"10.1016/j.watres.2025.123365","DOIUrl":"10.1016/j.watres.2025.123365","url":null,"abstract":"<div><div>About 90 % of global lactate production is derived from bacterial fermentation of sugars <em>via</em> pure homofermentative cultures in batch mode. Acid whey, which is a lactose-rich wastewater from the yogurt industry, can be used as an alternative substrate for commercial lactate production. Operating reactor microbiomes reduces the lactate production costs by circumventing sterilization, while continuous operation with biomass retention achieves higher productivity at shorter production times. To find the best reactor configuration with biomass retention for lactate production from acid whey, we operated three different reactor configurations: <strong>(1)</strong> an upflow anaerobic sludge blanket (UASB) reactor; <strong>(2)</strong> an anaerobic filter reactor (AFR); and <strong>(3)</strong> an anaerobic continuously stirred tank reactor (CSTR) with a hollow-fiber membrane module. We operated at different hydraulic retention times (HRTs) to find the optimum production parameters at a temperature of 50 °C and a pH of 5.0. We did not use an inoculum but enriched the endogenous D-lactate-producing <em>Lactobacillus</em> spp. that later dominated the reactor microbiomes (&gt; 90 % relative abundance). Undissociated lactic acid concentrations of more than 60 mmol C L⁻¹ inhibited the microbiomes. We alleviated the inhibition effect by shortening the HRT to 0.6 days and using diluted acid-whey substrate (1.67-fold dilution) to achieve almost complete conversion of the acid-whey sugars to lactate. At the 0.6-day HRT, the AFR and CSTR performed better than the UASB reactor due to their better cell retention abilities. During the period between Day 365–384, we experienced an error in the pH control of the CSTR system during which the pH value dropped to 4.3. After this pH-error period, the lactose and galactose-into-lactate (LG-into-LA) conversion efficiency for the CSTR considerably improved and surpassed the AFR. We achieved the highest lactate conversion rate of 1256 ± 46.3 mmol C L⁻¹ d⁻¹ (1.57 ± 0.06 g L⁻¹ h⁻¹) at a LG-into-LA conversion efficiency of 82.2 ± 3.4 % (in mmol C), with a yield of 0.85 ± 0.02 mmol C mmol C⁻¹ (product per consumed substrate) for the CSTR.</div></div>","PeriodicalId":443,"journal":{"name":"Water Research","volume":"278 ","pages":"Article 123365"},"PeriodicalIF":11.4,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143470881","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":"Electrochemical nitrite sensing using mass transfer signal with a catalyst-free small-sized rotating disk electrode for wastewater monitoring","authors":"Fengjun Yin ,&nbsp;Xiaohui Yang ,&nbsp;Shun Lu ,&nbsp;Hanlin Zhang ,&nbsp;Ying Zhao ,&nbsp;Sha Wang ,&nbsp;Cheng Song ,&nbsp;Yongzhi Li ,&nbsp;Zhaoming Chen ,&nbsp;Hong Liu","doi":"10.1016/j.watres.2025.123346","DOIUrl":"10.1016/j.watres.2025.123346","url":null,"abstract":"<div><div>Electrochemical nitrite sensing (ENS) is a competitive method for online monitoring in the intelligent control of biological nitrogen removal process. However, its popularity is extremely low due to complex wastewater interference and low sensor durability. Here, we developed a novel ENS method that utilizes the mass transfer signal (MTS) of the nitrite oxidation reaction (NOR), making detection accuracy dependent solely on mass transfer process. These features enabled us to design a catalyst-free, small-sized glassy carbon rotating disk electrode for accurate MTS determination with exceptional durability. The linearity of MTS versus nitrite concentration surpasses that of conventional differential pulse voltammetry and amperometry. The method has a wide linear range of 100 μM–100 mM, a detection limit of 28 μM, and a high sensitivity of 1638 μA mM^-1 cm^-2. Importantly, solution pH and coexisting buffers show no significant effect on MTS determinations as long as pH does not exceed 10. Excellent immunity to interference from ionic strength, temperature, COD, inert salts, metal ions, dissolved oxygen, and hydrogen peroxide was observed. While reducing substances capable of oxidation reactions do cause interference, they are not common in environmental samples. Finally, a self-designed detection system requiring a sample volume of 4 mL was used for wastewater testing. The results demonstrate good capability for nitrite detection during practical wastewater treatment processes, although relative error increases with the complexity and content of organic pollutants in the wastewater. Overall, this ENS method holds great potential for achieving rapid, stable, and low-cost nitrite sensing in environmental applications.</div></div>","PeriodicalId":443,"journal":{"name":"Water Research","volume":"277 ","pages":"Article 123346"},"PeriodicalIF":11.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143462259","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":"Co-enhancing volatile organic compound degradation and steam generation in solar interfacial evaporation by integrating with electro-Fenton","authors":"Yueling Yu ,&nbsp;Yanming Liu ,&nbsp;Xingzhu Zhang ,&nbsp;Bowen lv ,&nbsp;Yuanlu Xu ,&nbsp;Xinfei Fan","doi":"10.1016/j.watres.2025.123348","DOIUrl":"10.1016/j.watres.2025.123348","url":null,"abstract":"<div><div>Solar interfacial evaporation (SIE) process offers an effective and sustainable approach for alleviating freshwater shortage, but the simultaneous evaporation of volatile organic compound (VOC) limits the application of this technique. Herein, a novel electro-Fenton assisted SIE (EF/SIE) was proposed for the first time to co-enhance steam generation and VOC removal based on an evaporator composed of graphite felt decorated with Fe/N-doped porous carbon (FeNCx/GF). This dual functional evaporator integrating photothermal and electrocatalytic technology achieved a “self-sufficient” degradation process, in which FeNCx acted as the heterogeneous electrocatalyst to in-situ produce H₂O₂ and reactive oxidizing species (ROS) for VOC degradation at evaporator interface. As a result, the VOC removal efficiency of EF/SIE system achieved 97.8 ± 1.7 % in the condensate, which was 4.8 times that of the sole SIE system. Meanwhile, due to the Joule heating during electro-Fenton process, the conversion rate from water to vapor was accelerated, reaching an evaporation rate to 1.65 kg m^-2 h^-1 at the cathodic interface, while that of the sole SIE system was only 1.43 kg m^-2 h^-1. Additionally, an external solar cell enabled complete photo-electro-thermal conversion that ensured an excellent VOC removal efficiency (99 %) of the EF/SIE system in the outdoor experiment. The innovatively designed system also showed versatility in different water substrates. Thus, the dual functional evaporators successfully integrated SIE with EF, providing a sustainable and synergetic strategy for efficient treatment of wastewater containing VOC.</div></div>","PeriodicalId":443,"journal":{"name":"Water Research","volume":"277 ","pages":"Article 123348"},"PeriodicalIF":11.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143470884","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":"Multiscale spatio‐temporal variability of suspended sediment front in the Yangtze River Estuary and its ecological effects","authors":"Yunfei Du ,&nbsp;Xiangju Han ,&nbsp;Ya Ping Wang ,&nbsp;Daidu Fan ,&nbsp;Jicai Zhang","doi":"10.1016/j.watres.2025.123349","DOIUrl":"10.1016/j.watres.2025.123349","url":null,"abstract":"<div><div>The suspended sediment front (SSF) in the Yangtze River Estuary significantly affects regional circulation, water quality, and productivity. However, the quantitative understanding of its multiscale spatio‐temporal variations and associated ecological effects remains largely limited. Utilizing suspended sediment concentration remote sensing data from 2012 to 2018, we applied an improved gradient-based front detection algorithm to identify SSFs. Our analysis highlighted significant variability in the SSF and established its oscillating boundaries. The mean longitude location of the front is approximately 122.2°E, extending up to 122.8°E, with its occurrence frequency negatively correlated with water depth. The control effect of estuarine engineering projects on lateral sediment exchange results in the more frequent occurrence of stable banded fronts in these areas. The SSF exhibits notable spatial pattern variability and fluctuations on tidal to interannual scales. Compared to other tidal types, the front extends furthest offshore during spring tides due to enhanced tidal mixing and seaward residual flow. The seasonal variations in the frontal location are closely related to ocean dynamic processes, jointly controlled by the mixed layer depth, wind speed, wind direction, wave intensity, and sea surface temperature. The direct influence of sediment load from the Yangtze River is most pronounced in July, coinciding with peak sediment load. The interannual variations indicate a strong correlation between frontal migration and sediment load. Meanwhile, extreme storm events cause significant resuspension of bed sediments, resulting in substantial offshore movement of the SSF (&gt;14 km), with effects persisting for at least 2 days. Major floods modulate the short-term fluctuation range of the front by significantly increasing the sediment transport flux. Further investigation into the ecological effects of the SSF reveals that in summer, the dual front system comprising the SSF and plume front strongly controls estuarine primary productivity, with regions of high chlorophyll-a concentration aligning well with the seaward oscillation boundary of the SSF. Temperature, salinity, and nutrient concentration near the SSF also exhibit drastic changes. Conversely, in winter, insufficient runoff results in a single SSF system, leading to suboptimal nutrient, temperature, and light conditions, and consequently, very low primary productivity.</div></div>","PeriodicalId":443,"journal":{"name":"Water Research","volume":"279 ","pages":"Article 123349"},"PeriodicalIF":11.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471069","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":"Dissolved organic carbon estimation in lakes: Improving machine learning with data augmentation on fusion of multi-sensor remote sensing observations","authors":"Seyed Babak Haji Seyed Asadollah ,&nbsp;Ahmadreza Safaeinia ,&nbsp;Sina Jarahizadeh ,&nbsp;Francisco Javier Alcalá ,&nbsp;Ahmad Sharafati ,&nbsp;Antonio Jodar-Abellan","doi":"10.1016/j.watres.2025.123350","DOIUrl":"10.1016/j.watres.2025.123350","url":null,"abstract":"<div><div>This paper presents a novel approach for estimating Dissolved Organic Carbon (DOC) concentrations in lakes considering both carbon sources and sink operators. Despite the critical role of DOC, the combined application of machine learning, as a robust predictor, and remote sensing technology, which reduces costly and time-intensive in-situ sampling, has been underexplored in DOC research. Focusing on lakes over the states of New York, Vermont and Maine (United States, U.S.), this study integrates in-situ DOC measurements with surface reflectance bands obtained from Landsat satellites between 2000 and 2020. Using these bands as inputs of the Random Forest (RF) predictive model, the introduced methodology aims to explore the ability of remote sensing data for large-scale DOC simulation. Initial results indicate low accuracy metrics and significant under-estimation due to the imbalance distribution of DOC samples. Statistical analysis showed that the mean DOC concentration was 5.37±3.37 mg/L (mean±one standard deviation), with peak up to 25 mg/L. A highly skewed distribution of chemical components towards the lower ranges can lead to model misrepresentation of extreme and hazardous events, as they are clouded by unimportant events due to significantly lower occurrence rates. To address this issue, the Synthetic Minority Over-sampling Technique (SMOTE) was applied as a key innovation, generating synthetic samples that enhance RF accuracy and reduce the associated errors. Fusion of in-situ and remote sensing data, combined with machine learning and data augmentation, significantly enhances DOC estimation accuracy, especially in high concentration ranges which are critical for environmental health. With prediction metrics of RMSE = 1.75, MAE = 1.09, and R² = 0.74, RF-SMOTE significantly improve the metrics obtained from stand-alone RF, particularly in estimating high DOC concentrations. Considering the product spatial resolution of 30 m, the model's output provides potential revenue for global application in lake monitoring, even in remote regions where direct sampling is limited. This novel fusion of remote sensing, machine learning and data augmentation offers valuable insights for water quality management and understanding carbon cycling in aquatic ecosystems.</div></div>","PeriodicalId":443,"journal":{"name":"Water Research","volume":"277 ","pages":"Article 123350"},"PeriodicalIF":11.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471103","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":"Identifying surface formation and adhesion mechanisms of FOG deposits on sewer lines","authors":"Samrin A. Kusum,&nbsp;Moe Pourghaz,&nbsp;Joel J. Ducoste","doi":"10.1016/j.watres.2025.123340","DOIUrl":"10.1016/j.watres.2025.123340","url":null,"abstract":"<div><div>Fat, oil, and grease (FOG) deposits contribute to 25 % of Sanitary Sewer Overflows (SSOs) in the U.S. and is exacerbated by the aging sewer infrastructure. As the U.S. contemplates renovating its sewer systems, employing sustainable materials that inhibit FOG deposit adhesion could be crucial. This study delves into the saponified FOG deposit formation and adhesion mechanisms on various materials—concrete, Poly Vinyl Chloride (PVC), granite, limestone, and porous ceramic. Through extensive testing, these materials were evaluated for chemical composition, surface roughness, porosity, zeta potential, and calcium leaching potential. The findings indicate that materials with high calcium hydroxide leaching potential, high pore pH, and low zeta potential tend to adhere significant saponified FOG deposits. Conversely, reducing surface FOG deposit formation and adhesion on sewer lines requires materials to be engineered with low calcium hydroxide leaching and high zeta potential. Considering these factors, granite followed by PVC exhibited the best properties that demonstrated no FOG deposit adhesion. The outcomes of this study not only provide insight into the physical interactions governing FOG deposit adhesion but also suggest a targeted strategy for material selection and modification in sewer system renovations to mitigate Sanitary Sewer Overflows.</div></div>","PeriodicalId":443,"journal":{"name":"Water Research","volume":"278 ","pages":"Article 123340"},"PeriodicalIF":11.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143470883","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":"Visible light photosensitised cross-flow microfiltration membrane reactors for managing microplastic-contaminated bio-effluents","authors":"Hooralain Bushnaq ,&nbsp;Sisi Pu ,&nbsp;Tom Burton ,&nbsp;Julio Rodriguez-Andres ,&nbsp;Julio Carrera Montoya ,&nbsp;Jason Mackenzie ,&nbsp;Catherine Munro ,&nbsp;Giovanni Palmisano ,&nbsp;Srinivas Mettu ,&nbsp;James Mcelhinney ,&nbsp;Ludovic F. Dumée","doi":"10.1016/j.watres.2025.123317","DOIUrl":"10.1016/j.watres.2025.123317","url":null,"abstract":"<div><div>The demand for advanced water treatment solutions necessitates the development of multifunctional, photodynamically active membranes. Phthalocyanines (Pcs), a class of organic photosensitizers, offer significant potential for enhancing treatment efficacy through photodynamic activity. This study reports the development of Pc-modified polymeric microfiltration membranes as visible-light-responsive, multifunctional membrane reactors with enhanced photodynamic and filtration properties. Cobalt phthalocyanine (CoPc), zinc phthalocyanine (ZnPc), tetra-amino zinc phthalocyanine (TAZnPc), and tetra-sulfonated aluminum phthalocyanine (TSAlPc) were integrated into the membranes, imparting notable changes in morphology, surface wettability, and chemical functionality. Characterization revealed improvements in optical responsiveness and surface properties that contributed to robust photodynamic and filtration performance. Static photodynamic evaluations demonstrated high efficacy, with ZnPc mixed matrix membrane (MMM) achieving superior dye degradation and TSAlPc grafted membrane (GM) yielding significant bacterial inactivation. Filtration trials confirmed ZnPc MMM's biofouling resistance and permeance stability, reaching 99.97 % rejection of bio-fouled microplastics (MPs) and a 45 % permeance enhancement under irradiation. Virus filtration results demonstrated TSAlPc MMM's viral retention efficacy, achieving a 2.05-log reduction against Influenza A virus. These findings underscore the potential of Pc-functionalized membranes as promising candidates for advanced water treatment applications, offering robust contaminant rejection, biofouling control, and broad-spectrum antimicrobial efficacy in a single, multifunctional platform.</div></div>","PeriodicalId":443,"journal":{"name":"Water Research","volume":"277 ","pages":"Article 123317"},"PeriodicalIF":11.4,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143451874","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":"Mechanistic insights into chloroethene dechlorination by Dehalococcoides mccartyi strain CWV2: A multi-omics perspective","authors":"Chih-Ming Kao ,&nbsp;Ku-Fan Chen ,&nbsp;Po-Sheng Kuo ,&nbsp;Chih-Ching Chien ,&nbsp;Che-Wei Lu ,&nbsp;Ssu-Ching Chen","doi":"10.1016/j.watres.2025.123347","DOIUrl":"10.1016/j.watres.2025.123347","url":null,"abstract":"<div><div>This study provides an in-depth investigation of the novel <em>Dehalococcoides mccartyi</em> (<em>Dhc</em>) strain CWV2, isolated from Taiwan, for its effectiveness in dechlorinating various chloroethenes, including PCE, TCE, DCEs, and VC, to ethene. Through multi-omics analyses, including genomic, transcriptomic, translatomic and proteomic profiling, we uncovered the mechanisms behind TCE dechlorination by strain CWV2. The genomic analysis identified key reductive dehalogenase (RDase) genes, <em>pceA</em> and <em>vcrA</em>, which enhance our understanding of the versatile dechlorination pathways in <em>Dhc</em>. Ribosome profiling provided detailed insights into the translational regulation of <em>vcrA</em>, revealing sophisticated genetic control over protein synthesis. Complementary BN-PAGE and proteomic analyses identified key RDase VcrA, offering further insights into the activity of the organohalide respiration (OHR) complex within CWV2 and its metabolic pathways. Multi-omics analyses provide a comprehensive understanding of the mechanisms behind TCE dechlorination and organohalide respiration, offering valuable insights to advance bioremediation strategies for chloroethene-contaminated environments.</div></div>","PeriodicalId":443,"journal":{"name":"Water Research","volume":"277 ","pages":"Article 123347"},"PeriodicalIF":11.4,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143462258","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}