Environmental Science: Water Research & Technology最新文献

{"title":"In situ sequestration of per- and polyfluoroalkyl substances in aquifer materials using polydiallyldimethyl ammonium chloride-stabilized powdered activated carbon†","authors":"William M. Longo, Sneha Sinha, Mito Imagawa, William A. Arnold, James Hatton, Kurt D. Pennell and Matt F. Simcik","doi":"10.1039/D4EW00752B","DOIUrl":"https://doi.org/10.1039/D4EW00752B","url":null,"abstract":"<p >The widespread use of aqueous film-forming foams (AFFF) for firefighting and fire fighter training activities has led to groundwater contamination with per- and polyfluoroalkyl substances (PFAS). PFAS can be effectively sorbed onto powdered activated carbon (PAC) and the aqueous cationic polymer, polydiallyldimethyl ammonium chloride (PDM). These sorbents form a stable suspension (S-PAC) that can be injected into the subsurface to create a permeable adsorptive barrier (PAB), providing the basis for field-scale <em>in situ</em> PFAS sequestration. A series of bench-scale one-dimensional column experiments were performed to assess the transport and sorption of PFAS in aquifer materials from two field sites with PFAS-contaminated groundwater. Experiments included testing the effect of pre-treatment with PDM and sequential injections of individual PFAS and mixtures. In all experiments, S-PAC enhanced PFAS sorption on site media from &gt; 2-fold (<em>e.g.</em> perfluorohexanoic acid) to &gt; 100-fold (<em>e.g.</em> perfluorooctane sulfonic acid) depending on headgroup, chain length, and influent concentration. Pretreatment of influent with PDM alone increased total PFAS sorption for compounds with sulfonic acid and sulfonamido headgroups by up to ∼2-fold relative to S-PAC treatment without PDM pretreatment. Results also demonstrated competition for sorption sites with long-chain PFAS displacing shorter chain length PFAS from the S-PAC, an effect that can potentially be addressed by expanding the treatment zone. S-PAC is a viable treatment for <em>in situ</em> sequestration of PFAS and upstream injection of PDM may enhance removal. Competitive displacement by more strongly sorbed PFAS should be a design consideration when implementing this technology in the field.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 6","pages":" 1527-1541"},"PeriodicalIF":3.5,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144171176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Evaluating the feasibility of creating a zero waste discharge aquaculture system†","authors":"N. A. Oladoja, J. A. Ogunniyi, Y. I. Bulu, R. O. A. Adelagun, M. O. Alfred and E. I. Unuabonah","doi":"10.1039/D4EW01080A","DOIUrl":"https://doi.org/10.1039/D4EW01080A","url":null,"abstract":"<p >Aquaculture operations are synonymous with high freshwater consumption, followed by the discharge of large volumes of heavily contaminated wastewater. The freshwater consumption stresses clean water resources, and the discharge of contaminated wastewater induces ecological imbalance. Therefore, there is a crucial need to promote the concept of resource efficiency <em>via</em> wastewater management practice that supports the purification of nutrient-rich aquaculture wastewater (AQW) for reuse and nutrient recovery for agricultural use. Herein, the synergistic effects of the combination of primary coagulants (<em>i.e.</em>, <em>Moringa oleifera</em> (MO) and chitosan (CH)) with a coagulant aid (<em>i.e.</em>, thermally treated shell of a gastropod (GS)) was evaluated for AQW purification and nutrient recovery. From the determination of the optimum coagulant and coagulant aid dosages, two different coagulant–coagulant aid (C–CA) combinations (<em>i.e.</em>, MO–GS and CH–GS) were prepared and comparatively assessed with the respective precursors for the AQW wastewater purification. The settled flocs were harvested and evaluated for the fertilizer values and nutrient releasing profiles and patterns. The coagulant aid produced water with the highest turbidity removal efficiency (98.8%), but the need to moderate the extreme pH value (12.1) of the produced treated water prompted the combination with different coagulants to produce the C–CA combination. The physicochemical characteristics of the dried harvested flocs (DHF) were comparable with those of the commercial fertilizers. All DHF samples showed a delayed TP release, fast TN release, and different modes and rates of nutrient release. The mode of nutrient release was similar in the C–CA combination, as they were best described by the Baker Lonsdale nutrient release kinetic model. Field application simulation and process safety evaluation are recommended to ensure a smooth transition from the bench scale to real-life applications.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 5","pages":" 1325-1338"},"PeriodicalIF":3.5,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143896649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"A highly sensitive disposable electrochemical sensor based on copper nanoparticles for pesticide imidacloprid determination in contaminated water sources†","authors":"Julia Oliveira Fernandes, Cassiano Augusto Rolim Bernardino, Maria Carolina da Costa Marques, Octavio Pereira Lopes de Souza, Claudio Fernando Mahler, Bernardo Ferreira Braz, Ricardo Erthal Santelli, Thiago da Cruz Canevari and Fernando Henrique Cincotto","doi":"10.1039/D4EW00829D","DOIUrl":"https://doi.org/10.1039/D4EW00829D","url":null,"abstract":"<p >The study aimed to develop a new electrochemical sensor based on a screen-printed carbon electrode modified with copper nanoparticles (SPE/CuNPs) to determine imidacloprid (IMI) pesticide in environmental samples. The sensor's structural characterization and electrochemical performance were assessed through high-resolution transmission electron microscopy and ultraviolet–visible spectroscopy, electrochemical impedance spectroscopy, cyclic voltammetry, and differential pulse voltammetry. The results indicated that the SPE/CuNPs exhibited a porous and rough surface morphology, which enhances the adsorption of chemical species at the electrode/solution interface. Furthermore, the incorporation of copper nanoparticles significantly improved the sensor's sensitivity. The sensor displayed high sensitivity and selectivity for detecting IMI, with a detection limit of 10.8 nmol L<small>⁻¹</small> and a linear response range of 0.059 to 0.516 μmol L<small>⁻¹</small>, highlighting its robust analytical performance in environmental sample analysis.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 6","pages":" 1517-1526"},"PeriodicalIF":3.5,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144171175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Improvement of sludge dewatering by calcium peroxide activated with pyrite: performances, mechanisms and implications†","authors":"Jinyun Chen, Xiaoshuang Liu, Ziheng Dai, Lei Liu, Yuhan Fan, Weiqi Liu and Liguo Zhang","doi":"10.1039/D4EW00915K","DOIUrl":"https://doi.org/10.1039/D4EW00915K","url":null,"abstract":"<p >This study proposed a novel sludge conditioning technology using calcium peroxide (CaO<small>₂</small>) activated with pyrite for improving the dewaterability of waste activated sludge (WAS). The results showed that the water content of the sludge cake decreased from 93.33% to 90.80%, and the SCST decreased to 0.52 at the optimal conditioning (pyrite dose of 32.61 mg g<small>_TS</small><small>⁻¹</small>, CaO<small>₂</small> dose of 30 mg g<small>_TS</small><small>⁻¹</small>). Furthermore, a comprehensive investigation indicated that the underlying mechanism of dewaterability improvement can be attributed to the transformations of extracellular polymeric substances (EPS). The results of the FTIR protein secondary structure and interfacial free energy showed that combined conditioning enhanced the hydrophobicity of the sludge. In addition, the repulsive force of sludge particles and the bound water content in sludge flocs both decreased after conditioning based on the results of zeta potential and potential barriers. Overall, these findings provided theoretical insights into the role of EPS in dewaterability improvement and an alternative sludge conditioning scheme.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 5","pages":" 1186-1199"},"PeriodicalIF":3.5,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143896594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Research advancements in the treatment of wastewater containing pollutants in printed circuit board production†","authors":"Zicheng Zeng, Lei Huang, Guoqing Wu, Meng Li, Hongyu Wang, Meng Zhao and Hongguo Zhang","doi":"10.1039/D4EW00827H","DOIUrl":"https://doi.org/10.1039/D4EW00827H","url":null,"abstract":"<p >With the increasing demand for electronic equipment, the production of essential components and printed circuit boards has surged, generating a substantial volume of industrial wastewater. This wastewater contains heavy metals such as copper and nickel, as well as significant amounts of organic pollutants like black oil, dry film, and wet film. It must undergo treatment before being discharged into the environment. As a result, this paper categorizes printed circuit board wastewater into seven classifications, outlines various treatment methods, and specifically focuses on the removal of copper and its complexes through techniques such as chemical precipitation, adsorption, electrodeposition and advanced oxidation. By providing an in-depth analysis, this paper aims to offer valuable insights for the treatment of wastewater generated in the printed circuit board manufacturing process.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 5","pages":" 1038-1058"},"PeriodicalIF":3.5,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143896582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Novel fluidized-bed bioreactors with density-graded carriers for the bioremediation of nitrate in uranium industry effluents","authors":"Mariano Venturini, Paula Bucci and Raúl Muñoz","doi":"10.1039/D5EW00077G","DOIUrl":"https://doi.org/10.1039/D5EW00077G","url":null,"abstract":"<p >This study presents an innovative bioreactor system that employs density-graded floating carriers to effectively remediate complex uranium-contaminated effluents generated by the nuclear industry. By combining the advantages of fixed-bed and fluidized-bed reactors, our system utilizes floating carriers to create a stratified biofilm environment, optimizing biomass retention and mass transfer. Controlled redox potential (ORP) enhances the removal of uranium and associated contaminants, especially in effluents with high-nitrate concentrations. The fluidized-bed configuration, with a high carrier load, minimizes biofilm-induced clogging, ensuring sustained performance. Carriers were synthesized with acrylate polymers in different compositions: HEMA 50%/0 AA, HEMA 50%/25% AA and HEMA 50%/50% AA w/w to obtain different hydrodynamic properties. The particle terminal velocities and drag coefficients of carriers were 3.14 × 10<small>⁻⁶</small> m s<small>⁻¹</small>, 5 × 10<small>⁻⁵</small> m s<small>⁻¹</small>, and 2 × 10<small>⁻⁴</small> m s<small>⁻¹</small> and 661 976, 20 734, and 26 221, respectively. The system achieved nitrate and COD removal efficiencies of up to 90% and 84%, respectively, at a hydraulic retention time of 23.9 h and with low energy consumption. The system behaved like a fluidized bed with a high carrier load similar to the PBBR, showing piston flux and variable column fluidization based on carrier densities. Frictions and collisions prevented clogging due to biofilm formation, ensuring sustained performance.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 5","pages":" 1339-1351"},"PeriodicalIF":3.5,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ew/d5ew00077g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143896650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"In situ catalytic membrane technology for antifouling and sustainable landfill leachate management†","authors":"Zhongsen Yan, Zihan Tang, Yongyuan Wang, Yuling Jiang, Haiqing Chang, Juxiang Jin, Yujia Peng and Fangshu Qu","doi":"10.1039/D5EW00081E","DOIUrl":"https://doi.org/10.1039/D5EW00081E","url":null,"abstract":"<p >Landfill leachate contains high concentrations of hazardous pollutants that require effective treatment before discharge. Membrane distillation (MD) has emerged as a promising approach for leachate treatment, but membrane fouling remains a major challenge for its practical application. This study introduces an innovative <em>in situ</em> catalytic MD membrane to improve antifouling performance. The MnO<small>₂</small>-doped polyvinylidene fluoride (M-PVDF) membrane was prepared <em>via</em> electrospinning, incorporating an optimized amount of MnO<small>₂</small> and fluoroalkyl modifier. The M-PVDF membrane demonstrated excellent retention of landfill leachate pollutants across all test cycles, achieving retention rates above 99.23% for non-ammonia foulants. No membrane wetting was observed in M-PVDF during the cyclic tests, whereas conventional PVDF membranes exhibited wetting in the third cycle. The fouled M-PVDF membrane was effectively restored after cleaning with H<small>₂</small>O<small>₂</small>, regaining its original flux and demonstrating robust self-cleaning capabilities. This performance is attributed to the synergistic effects of micro-nano bubbles and MnO<small>₂</small>-catalyzed H<small>₂</small>O<small>₂</small> free radicals. The proposed <em>in situ</em> catalytic self-cleaning strategy significantly enhances the antifouling properties of MD, providing a sustainable solution for high-salinity wastewater treatment.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 5","pages":" 1313-1324"},"PeriodicalIF":3.5,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143896647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Research status of membrane separation technology in the treatment of antibiotic wastewater","authors":"Shida Zhang, Xuewan Zhang, Xue Shen, Xiangrui Lu, Yuqi Guo, Yingqiang Li, Xue Han, Rupeng Liu, Feiyong Chen and Cuizhen Sun","doi":"10.1039/D5EW00185D","DOIUrl":"https://doi.org/10.1039/D5EW00185D","url":null,"abstract":"<p >Recently, the utilization of antibiotics has been gradually increasing in many fields. Concerns have been raised regarding the potential threats to human health and the environment caused by antibiotic pollutants. Due to the incomplete metabolism or disposal of antibiotics by humans or livestock, antibiotic-containing wastewater enters the environment, leading to serious environmental problems, especially the spread of antibiotic resistance genes (ARGs) and the antibiotic resistance bacteria (ARB) caused by the accumulation of antibiotics. The presence of multiple types of antibiotics in wastewater complicates its treatment with traditional biological methods. This review summarizes the water quality characteristics, hazards, and transmission routes of antibiotics in the environment. The main methods used for antibiotic removal are comprehensively summarized, particularly the membrane separation technique and the hybrid methods based on membrane separation. This review highlights the potential of these integrated systems to address the challenges of antibiotic wastewater treatment, offering insights into future technological advancements and sustainable solutions.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 6","pages":" 1386-1400"},"PeriodicalIF":3.5,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144171161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Recent developments of iron oxide-based photocatalysts in water treatment technology: a review","authors":"Chao Li, Shilong He, Hong Mo, Xueqing Xu, Peixian Yang and Mengfei Liu","doi":"10.1039/D5EW00021A","DOIUrl":"https://doi.org/10.1039/D5EW00021A","url":null,"abstract":"<p >Fe<small>₂</small>O<small>₃</small>-based photocatalysis is one of the most promising technologies for the removal of pollutants in water. In this paper, the properties of Fe<small>₂</small>O<small>₃</small> photocatalysts are reviewed, and the photocatalytic mechanism is explained. Modification methods such as morphology control and doping can significantly improve the catalytic efficiency of pollutant removal by improving the specific surface area and electron transfer performance. The research progress and light stability of Fe<small>₂</small>O<small>₃</small> photocatalysts for removal of pollutants in water were reviewed. In addition, the research opportunities and future directions of Fe<small>₂</small>O<small>₃</small>-based photocatalysts in wastewater treatment are summarized.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 6","pages":" 1369-1385"},"PeriodicalIF":3.5,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144171160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Effects of heating temperature and water age on the formation of disinfection by-products in drinking water†","authors":"Xiaolu Zhang, Hongwei Yang, Chao Liu, Xiaomao Wang and Yuefeng F. Xie","doi":"10.1039/D4EW01068J","DOIUrl":"https://doi.org/10.1039/D4EW01068J","url":null,"abstract":"<p >Tap water is often heated to different temperatures for various household uses (<em>e.g.</em>, cleaning, washing, showering, bathing, and preparing hot drinks). Typical water ages (<em>i.e.</em>, residence time in the distribution system) range from hours to days prior to household water uses. The concentrations of twenty-one disinfection by-products (DBPs) were investigated in heated drinking water (<em>i.e.</em>, heating temperatures of 40, 65 or 90 °C, with a heating duration of 1 h) at varying water ages (<em>i.e.</em>, 2, 8, 24 and 48 h). DBP concentrations in heated drinking water were found to increase, remain largely constant, decrease or show a mixed changing pattern (<em>i.e.</em>, decrease following an initial increase) with increasing water age, depending on the heating temperature. A shorter water age resulted in larger increases in DBP concentrations during the heating process due to more chlorine residuals and organic precursors available for DBP formation. A kinetic model was proposed to illustrate DBP concentrations in heated drinking water, incorporating the effects of both heating temperature and water age. The relatively low discrepancies (<em>i.e.</em>, within or near ±20%) between modeled and experimentally measured DBP concentrations suggest the potential of the model to predict DBP concentrations in household heated drinking water across the distribution system.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 5","pages":" 1285-1295"},"PeriodicalIF":3.5,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143896645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}