Environmental Science: Water Research & Technology最新文献

{"title":"A comprehensive review of advancements in membrane distillation for liquid separation and hazardous contaminant removal: innovations in design, integration, and performance","authors":"N. Ramkumar and P. Monash","doi":"10.1039/D5EW00036J","DOIUrl":"https://doi.org/10.1039/D5EW00036J","url":null,"abstract":"<p >Technical advancements in membrane distillation (MD) present significant opportunities for efficient liquid separation and removal of hazardous contaminants. Advanced MD systems featuring high-performance, nontoxic, and innovative membrane materials with integrated design configurations achieve near-complete rejection of toxic substances from liquid waste. The adoption of renewable energy sources further enhances environmental sustainability and protects ecosystems and human health by effectively eliminating harmful pollutants from water sources. Despite its potential as a sustainable desalination technology, MD faces persistent challenges related to membrane durability and operational constraints, which hinder its wider application in liquid separation. This review aims to deepen the understanding of emerging MD configurations and their applications in liquid separation, resource recovery, toxic textile effluent treatment, and removal of other hazardous contaminants, as well as to highlight advancements in membrane fabrication, modification, and integration. Emphasis is placed on next-generation MD systems, including high-performance membranes, novel materials, optimized designs, fouling mitigation strategies, and enhanced energy efficiency. The contributions of innovative polymers and eco-friendly solvents to membrane performance and sustainability are also emphasized. In addition, this review explores the prevailing challenges and pathways to optimize advanced MD systems for efficient and sustainable liquid separation and resource recovery.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 5","pages":" 1086-1136"},"PeriodicalIF":3.5,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143896584","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":"Enhancing fault detection in wastewater treatment plants: a multi-scale principal component analysis approach with the Kantorovich distance","authors":"K. Ramakrishna Kini, Fouzi Harrou, Muddu Madakyaru and Ying Sun","doi":"10.1039/D4EW00831F","DOIUrl":"https://doi.org/10.1039/D4EW00831F","url":null,"abstract":"<p >Anomaly detection in wastewater treatment plants (WWTPs) is critical for ensuring their reliable operation and preventing system failures. This paper proposes an advanced monitoring scheme that integrates multiscale principal component analysis (PCA) with a Kantorovich distance (KD)-driven monitoring approach to enhance WWTP monitoring in noisy environments. The combination of wavelet-based multiscale filtering with PCA effectively denoises the data, while the KD-driven scheme offers a robust metric for detecting deviations from normal operating conditions. This approach does not require labeled data and employs the nonparametric Kantorovich distance (KD) test, providing a flexible and practical solution for anomaly detection. Validation using data from the COST benchmark simulation model (BSM1) demonstrates the effectiveness of the proposed methods. The study evaluates different sensor faults—bias, intermittent, and aging—at varying signal-to-noise ratio (SNR) levels and explores the impact of different wavelet bases and decomposition levels on denoising and detection performance. The results show that the proposed scheme outperforms traditional PCA and multiscale PCA-based techniques, offering improved anomaly detection capabilities in the presence of significant noise.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 5","pages":" 1215-1232"},"PeriodicalIF":3.5,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ew/d4ew00831f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143896595","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":"Drying reduces the total PFAS concentration in biosolids and alters the PFAS profile†","authors":"Patrick J. McNamara, Jessica Calteux, Eric Redman, Taryn McKnight, Lynne Moss, Webster Hoener, Scott Carr and Zhongzhe Liu","doi":"10.1039/D4EW00890A","DOIUrl":"https://doi.org/10.1039/D4EW00890A","url":null,"abstract":"<p >While per- and polyfluoroalkyl substances (PFAS) are not actually generated at water resource recovery facilities (WRRFs), utilities are being forced to consider PFAS in biosolids management plans due to mounting political pressure and pending regulations. Emerging thermal technologies including pyrolysis, gasification, and super critical water oxidation have garnered recent attention for PFAS destruction. Drying, however, is a conventional technology that might also be a tool for utilities to manage PFAS in biosolids, but research on the impacts of drying on PFAS in biosolids is scarce. The objective of this research was to determine how drying affected the fate of PFAS in biosolids. Full-scale sampling was paired with lab-scale oven drying experiments to understand the impact of drying on measurable PFAS in biosolids. Overall, drying substantially reduced the total PFAS concentration in biosolids. PFAS removal during a full-scale facility's drying process matched the removal achieved when solids were taken from that facility and dried in a lab-scale oven instead, with average PFAS removal being approximately 80%. Precursors to perfluoroalkyl acids (PFAAs), primarily 5 : 3 fluorotelomer carboxylic acid (FTCA) and 6 : 2 FTCA, as well as perfluorooctane sulfonic acid (PFOS) were substantially reduced between pre-drying and post-drying triplicate samples. Additional lab-scale oven drying experiments corroborated that measurable PFAS were removed from biosolids collected from three different utilities. Drying experiments at 30 °C and 105 °C revealed that the PFAS profiles were similar, but PFAS concentrations were lower in the 105 °C samples compared to 30 °C samples. While more research is necessary to determine and validate the removal mechanism, drying could be a viable technology to reduce measurable PFAS levels in biosolids to concentrations below guidelines for land application.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 4","pages":" 1007-1015"},"PeriodicalIF":3.5,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ew/d4ew00890a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716614","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":"Effects of an anaerobic membrane bioreactor upset event on nitrogen speciation and microbial community in a downstream phototrophic membrane bioreactor†","authors":"Daniella Saetta, Jason A. Fischer, Ashley Triana, Talon Bullard, Alexandra Smith, Cory J. Spern, Anirudha Dixit, Christina L. Khodadad, Daniel H. Yeh and Luke B. Roberson","doi":"10.1039/D4EW00987H","DOIUrl":"https://doi.org/10.1039/D4EW00987H","url":null,"abstract":"<p >A wastewater treatment architecture with an anaerobic membrane bioreactor and a phototrophic membrane bioreactor was created to close resource loops for use on the Moon and Mars. During an anomaly, an increase of carbon-to-nitrogen ratio led to a shift in the microbial community within PMBR. It is imperative to understand failure modes of the system and the system's ability to respond to perturbations in treatment because of their proposed application in remote, resource-limited locations. During this transient event, the carbon-to-nitrogen ratio in the AnMBR permeate increased from 0.341 to 11.2. Results showed that the microbial community became more diverse during the event and enriched in species related to the remediation of aromatic compounds. The community shift led to conditions required for greater than 90% carbon removal by the PMBR. The inclusion of the PMBR in the treatment architecture increased resilience and robustness for treating high-strength wastewaters in extreme environments.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 5","pages":" 1200-1214"},"PeriodicalIF":3.5,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143896620","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":"Energy-saving scheduling for multiple water intake pumping stations in water treatment plants based on personalized federated deep reinforcement learning†","authors":"Dongsheng Wang, Ao Li, Yicong Yuan, Tingjun Zhang, Liang Yu and Chaoqun Tan","doi":"10.1039/D4EW00685B","DOIUrl":"https://doi.org/10.1039/D4EW00685B","url":null,"abstract":"<p >Urban water treatment plants are among the largest energy consumers in municipal infrastructure, imposing significant economic burdens on their operators. This study employs a data-driven personalized federated learning-based multi-agent attention deep reinforcement learning (PFL-MAADRL) algorithm to address the intake scheduling problem of three water intake pumping stations in urban water treatment plants. Personalized federated learning (PFL) is combined with long short-term memory (LSTM) modeling to create environment models for water plants, focusing on energy consumption, reservoir levels, and mainline pressure. The average accuracies of PFL-based LSTM (PFL-LSTM) models are 0.012, 0.002, and 0.002 higher than those of the LSTM model in the three water plants. Evaluation metrics were established to quantify the effectiveness of each pumping station's energy-efficient scheduling, considering constraints such as reservoir water levels and mainline pressure. The results indicate that the proposed algorithm performs robustly under uncertainties, achieving a maximum energy consumption reduction of 10.6% compared to other benchmark methods.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 5","pages":" 1260-1270"},"PeriodicalIF":3.5,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ew/d4ew00685b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143896642","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":"Usability of waste plastic pyrolysis liquid/oil as a flotation collector in wastewater treatment","authors":"Merve Kalem","doi":"10.1039/D5EW00027K","DOIUrl":"https://doi.org/10.1039/D5EW00027K","url":null,"abstract":"<p >Pyrolysis is an important thermal waste disposal method that is more environmentally friendly than the combustion process, and almost all of its products can be converted into economic value. Specifically, the pyrolysis oils obtained are evaluated in different areas, such as the production of next-generation fuels and the recovery of valuable materials. Wastewater released during marble processing should not be discharged into the sewer without treatment, in accordance with national and international legislation, due to the high concentration of colloidal substances it contains. In the treatment of these wastewaters, conventional chemical precipitation processes and high amounts of synthetic chemicals are commonly used. Another method that can be employed for treating these wastewaters is the chemical substance-assisted flotation process, where efficiency depends on the use of oil-based chemicals. In this study, the treatment of marble processing wastewater was carried out for the first time using the flotation process, with pyrolysis oils obtained from mixed plastic waste pyrolysis as the collector material. According to the treatment experiments, the flotation collector that showed the highest suspended solid (SS) and turbidity removal efficiency was the pyrolysis oil obtained at a pyrolysis temperature of 700 °C. The flotation treatment findings were modeled using experimental design, and it was also revealed that collector dosage, mixing speed and air flow rate significantly affected the removal efficiencies.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 5","pages":" 1233-1245"},"PeriodicalIF":3.5,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ew/d5ew00027k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143896596","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":"Effect of peroxymonosulfate pre-oxidation coupled with subsequent Fe-based coagulation on the mitigation of organic matter and the formation of disinfection by-products†","authors":"Xuan Li, Keyan Liu, Zhe Ren, Zhenqi Du, Rong Xiao, Ruixue Jiang, Xiaochen Li and Tiantian Chen","doi":"10.1039/D4EW01021C","DOIUrl":"https://doi.org/10.1039/D4EW01021C","url":null,"abstract":"<p >The generative ability of abundant reactive species ensures peroxymonosulfate (PMS) pre-oxidation coupled with subsequent Fe-based coagulation (PPFeC) a promising drinking water treatment process, whereas these abundant reactive species can also oxidize chloride in water matrices to form reactive chlorine species (RCS). These RCS can further oxidize organic compounds, resulting in the unexpected cytotoxic and genotoxic disinfection by-product (DBP) formation. Thus, this study investigated the effect of PMS pre-oxidation coupled with subsequent Fe-based coagulation on the mitigation of organic matter and DBP. Here, results showed that the PPFeC process presented better dissolved organic carbon (DOC) removal performance than PMS pre-oxidation and Fe-based coagulation. Compared to Fe<small>³⁺</small>-based coagulation, Fe<small>²⁺</small>-based coagulation resulted in higher DOC removal performance (increased by 63.5% in natural water), higher DBP concentration and water toxicity (increased by 31.3% for the cytotoxicity index and 18.5% for the genotoxicity index in natural water) during the PPFeC process. DBP concentration and toxicity decreased with the increase of the pre-oxidation time, and increased with the increase of PMS concentration. Furthermore, concentration of DBP and toxicity of water initially increased and then decreased with the increase of sedimentation time and coagulant concentration. In addition, compared to SO<small>₄</small>˙<small>⁻</small> and PMS, HO· played a more significant role in the DBP formation and toxicity during the PPFeC process. Therefore, Fe<small>³⁺</small>-based coagulants were reliable to ensure drinking water safety as PMS was applied as the pre-oxidant.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 4","pages":" 972-981"},"PeriodicalIF":3.5,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716567","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":"Prospects of layered double hydroxide (LDH)-based adsorbents for the remediation of environmental inorganic pollutants from wastewater: a critical review","authors":"Deepmoni Brahma, Manash Pratim Barman, Dipanwita Basak and Hemaprobha Saikia","doi":"10.1039/D4EW01039F","DOIUrl":"https://doi.org/10.1039/D4EW01039F","url":null,"abstract":"<p >Heavy metal pollution is extremely deleterious and has emerged as a major environmental concern, posing a hazardous threat to humans and aquatic organisms. It is increasing at an alarming rate owing to significant contributions from natural and anthropogenic activities, which include mining operations, spraying pesticides, land filling, rock abrasion, volcanic eruptions, and fossil fuel combustion. Heavy metals are potentially toxic even at low concentrations and can induce hepatotoxicity, nephrotoxicity, neurotoxicity, carcinogenicity, genotoxicity, and cardiovascular toxicity. Thus, the removal of heavy metals is critical from an environmental perspective. Recently, various efficient adsorbents have been developed for the treatment of heavy metal contaminants, among which LDHs have received great interest owing to their outstanding features such as structural flexibility, biocompatibility, reusability, simple synthesis, low cost, high adsorption efficiency as well as rheological and swelling properties. This review presents an extensive summary of LDH-based adsorbents reported in the literature in the last ten years for heavy metal remediation. Herein, we systematically explore the recent advancements in aspects such as sources of heavy metals, toxicological effects, functionalization strategies, application of LDH-based hybrids in metal detoxification, influencing factors, and machine learning approaches. Moreover, this review highlights pivotal parameters such as isotherms, kinetics, thermodynamics, adsorption capacity, adsorption mechanisms, and optimised experimental values. Finally, we discuss the future perspectives in this promising field. This work will provide valuable insights to new researchers for further exploring the potential of LDH-based adsorbents in heavy metal remediation.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 4","pages":" 830-875"},"PeriodicalIF":3.5,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716619","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":"Disparities in potential nitrate exposures within Iowa public water systems†","authors":"Emmanuel Padmore Mantey, Lu Liu and Chris R. Rehmann","doi":"10.1039/D4EW00907J","DOIUrl":"https://doi.org/10.1039/D4EW00907J","url":null,"abstract":"<p >Nitrates (measured as nitrate-nitrogen) in drinking water exceeding the maximum contaminant level (MCL) of 10 mg L<small>⁻¹</small> can cause significant health risks, such as methemoglobinemia. Even long-term exposure to concentrations below the MCL can also increase the risks of cancer. Iowa, a major agricultural producer, has grappled with decades-long nitrate pollution in its water systems due to intensive farming practices and animal feeding operations. To help in developing interventions and policies to protect public health, this study delves into long-term nitrate levels in 871 Iowa public water systems (PWSs) between 2012 and 2022 and examines sociodemographic disparities in potential nitrate exposure in drinking water. Average nitrate concentration in Iowa's PWSs increased between 2012 and 2016, reaching an average peak of 3 mg L<small>⁻¹</small> in 2016. 2.5% of 871 PWSs are classified as ‘high-risk’, with nitrate concentrations consistently exceeding 5 mg L<small>⁻¹</small> over the study period, primarily in eastern and western Iowa, where animal feeding operations are concentrated. The absence of nitrate removal processes at these PWSs contributes to the sustained elevated levels. On average, 7.4% of the state's population served by PWSs has been exposed to nitrate levels consistently exceeding 5 mg L<small>⁻¹</small> in the past decade. Disparities exist among various sociodemographic groups, with statistically significant higher exposure rates (10.1%, 9.6%, 9.2%, and 8.7%) observed for people whose incomes are below the federal poverty threshold ($26 496/year), older adults (65 years and above), people of colour, and children (5 years and younger). These disparities are particularly concerning as these populations often lack the resources to address the consequences of water contamination. Our study highlights inequities in Iowa's PWSs concerning potential nitrate exposures and underscores a need for nitrate remediation in specific areas. Addressing these disparities is crucial to safeguarding the health of vulnerable populations and promoting environmental justice in water management.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 4","pages":" 959-971"},"PeriodicalIF":3.5,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ew/d4ew00907j?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716566","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":"Exploring the applications and carbon reduction of multi-technology-coupled membrane biofilm reactors for sustainable wastewater treatment: a review","authors":"Chang Mei, Meng Zhang, YuChao Chen, Kun Dong, RuiZe Sun, XueHong Zhang and HaiXiang Li","doi":"10.1039/D4EW01030B","DOIUrl":"https://doi.org/10.1039/D4EW01030B","url":null,"abstract":"<p >Membrane biofilm reactors (MBfRs), which efficiently remove pollutants and reduce carbon emissions, hold great promise for wastewater treatment. However, the lack of a cheap local supply of hydrogen, uncontrolled substrate competition, and other issues pose challenges on the long-term stability of these reactors. At the same time, membrane bioreactors have strong bonding capabilities and can be coupled with a variety of processes. Therefore, these reactors are coupled with metal catalysts, electrochemistry, or anaerobic ammonia oxidation (anammox) technology to overcome these challenges. Metal catalysts reduces the replacement cycle and improves the operation stability of MBfRs, while electrochemistry removes pollutants <em>in situ</em> along with providing sufficient hydrogen. When coupled with anammox, the performance of the reactor improves and the energy consumption reduces. In this review, coupling of the hydrogen-based membrane biofilm reactor with the above technologies is discussed in view of their practical applications. Furthermore, their working principles, carbon emission reduction and applications are analyzed. Based on these, practical application and carbon emission reduction of membrane biofilm reactors are discussed along with providing ideas on overcoming their limitations.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 4","pages":" 793-808"},"PeriodicalIF":3.5,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716616","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}