ACS ES&T water最新文献_第5页

A New Colorimetric Using Zr Oxide DGT Technique for High-Resolution Measurement of Labile Mo(VI) in Sediment Porewater 利用氧化锆DGT技术高分辨率测定沉积物孔隙水中活性Mo（VI）的比色法

IF 4.8

ACS ES&T water Pub Date : 2025-04-17 DOI: 10.1021/acsestwater.4c0128110.1021/acsestwater.4c01281

Zhixin Song, Haosen Sun, Wenzhong Tang*, Jack C. Ng, Gangfu Song, Limin Shu, Shuli Liu, Guoting Li and Jianyin Huang,

{"title":"A New Colorimetric Using Zr Oxide DGT Technique for High-Resolution Measurement of Labile Mo(VI) in Sediment Porewater","authors":"Zhixin Song, Haosen Sun, Wenzhong Tang*, Jack C. Ng, Gangfu Song, Limin Shu, Shuli Liu, Guoting Li and Jianyin Huang, ","doi":"10.1021/acsestwater.4c0128110.1021/acsestwater.4c01281","DOIUrl":"https://doi.org/10.1021/acsestwater.4c01281https://doi.org/10.1021/acsestwater.4c01281","url":null,"abstract":"Understanding the distribution of labile molybdenum (Mo(VI)) in sediment porewater is essential for managing Mo-contaminated environments. This study developed a two-dimensional (2D) high-resolution method combining diffusive gradients in thin films (DGT) with sodium thiocyanate coloration and computer-imaging densitometry (CID) to measure labile Mo(VI). Optimal color development occurred at 25 °C for 36 min using a reagent volume that was 100 times that of the binding gel. The method proved to be robust against variations in pH, ionic strength, and phosphate level. It was applied to sediment from the Luhun Reservoir, revealing increased Mo(VI) concentrations in overlying water, a decline near the sediment–water interface, a subsequent increase, and then a decrease with depth. These patterns suggest Mo(VI) originates from overlying water, binds to Fe/Mn (hydr)oxides below the interface, and interacts with dissolved sulfide in deeper layers. The DGT-CID technique offers a simple, field-applicable approach for accurate, high-resolution measurement of labile Mo(VI) and enhances our understanding of its spatial distribution in sediments, aiding effective environmental monitoring and remediation.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 5","pages":"2381–2391 2381–2391"},"PeriodicalIF":4.8,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Legacy of a Marine Disaster: Four-Year-Old Oil Fragments Pose Ecotoxicological Threat to Amphibian Life 海洋灾难的遗产：四年前的石油碎片对两栖动物生命构成生态毒理学威胁

IF 4.8

ACS ES&T water Pub Date : 2025-04-16 DOI: 10.1021/acsestwater.4c0087610.1021/acsestwater.4c00876

Thiarlen Marinho da Luz, Abraão Tiago Batista Guimarães, Abner Marcelino Silva, Omar Cruz Santiago, Chinnasamy Ragavendran, Marimuthu Govindarajan and Guilherme Malafaia*,

{"title":"Legacy of a Marine Disaster: Four-Year-Old Oil Fragments Pose Ecotoxicological Threat to Amphibian Life","authors":"Thiarlen Marinho da Luz, Abraão Tiago Batista Guimarães, Abner Marcelino Silva, Omar Cruz Santiago, Chinnasamy Ragavendran, Marimuthu Govindarajan and Guilherme Malafaia*, ","doi":"10.1021/acsestwater.4c0087610.1021/acsestwater.4c00876","DOIUrl":"https://doi.org/10.1021/acsestwater.4c00876https://doi.org/10.1021/acsestwater.4c00876","url":null,"abstract":"This study evaluated the ecotoxicological effects of weathered oil fragments (WOFs) collected four years after the 2019–2020 Brazilian oil spill on Scinax fuscovarius tadpoles, a species commonly found in mangrove-adjacent ecosystems. Tadpoles were exposed to WOFs at 1 g/L (WOF-I) and 4.5 g/L (WOF-II) for 21 days. Growth inhibition, oxidative stress, and genotoxicity were observed in both exposed groups. Compared to controls, WOF exposure resulted in up to 25.1% higher total petroleum hydrocarbon (TPH) accumulation in intestines, 400% more erythrocyte nuclear abnormalities, and significantly elevated DNA damage (tail DNA % and olive tail moment). Biochemical responses included increased reactive oxygen species (ROS), malondialdehyde (MDA), and corticosterone levels, along with altered antioxidant enzyme activities and upregulation of digestive enzymes. Principal Component Analysis (PCA) explained 75.1% and 24.9% of the variance in PC1 and PC2, respectively, highlighting oxidative stress, corticosterone, and genotoxicity as key factors in discrimination. Detrended Correspondence Analysis (DCA) confirmed group separation, with greater response variability in WOF-II. These findings demonstrate that WOFs remain toxic years after their release, posing a threat to amphibians in transitional ecosystems. The study highlights the importance of long-term monitoring and remediation efforts that extend beyond marine environments.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 5","pages":"2120–2133 2120–2133"},"PeriodicalIF":4.8,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-Rate Anaerobic Bioreactors for Antibiotic-Contaminated Wastewater: An In-Depth Review of Reactor Performance, Efficiency, and Future Prospects 高速率厌氧生物反应器处理抗生素污染废水：反应器性能、效率和未来展望的深入综述

IF 4.8

ACS ES&T water Pub Date : 2025-04-16 DOI: 10.1021/acsestwater.5c0000310.1021/acsestwater.5c00003

Usman M. Ismail, Muhammad Faizan Khan* and Haitham Elnakar*,

{"title":"High-Rate Anaerobic Bioreactors for Antibiotic-Contaminated Wastewater: An In-Depth Review of Reactor Performance, Efficiency, and Future Prospects","authors":"Usman M. Ismail, Muhammad Faizan Khan* and Haitham Elnakar*, ","doi":"10.1021/acsestwater.5c0000310.1021/acsestwater.5c00003","DOIUrl":"https://doi.org/10.1021/acsestwater.5c00003https://doi.org/10.1021/acsestwater.5c00003","url":null,"abstract":"Antibiotics, a class of emerging contaminants, are prevalent in the environment with wastewater treatment plants being a primary source. Their presence in water poses significant risks, including the formation of antibiotic-resistant genes and antibiotic-resistant bacteria. This review evaluates the performance of high-rate anaerobic bioreactors, including anaerobic membrane bioreactors (AnMBR), upflow anaerobic sludge blankets (UASB), and anaerobic sequencing batch reactors (ASBR), for the treatment of antibiotic-contaminated wastewater. Through bibliometric and science mapping analyses, key research trends were identified to frame the scope and selection of relevant studies. The outcomes reveal that these systems effectively reduce antibiotic concentrations and organic load with significant chemical oxygen demand (COD) removal and biogas production. However, complete mineralization of antibiotics remains a challenge, highlighting the need for integrated treatment approaches. The review identifies key operational parameters, such as membrane configurations, hydraulic retention time, and organic loading rate, as significant factors affecting treatment outcomes. Additionally, a comparative economic analysis reveals distinct cost profiles, with UASB and ASBR reactors offering lower capital and operational expenditures, while AnMBRs, despite higher initial investments, deliver superior effluent quality and biogas yields. Despite their potential for large-scale treatment, further research is necessary to optimize these systems, address knowledge gaps, and enhance their application efficiency and scalability.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 5","pages":"2009–2027 2009–2027"},"PeriodicalIF":4.8,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Simple Method to Clear Harmful Algal Blooms: Sprayable Foams with Algaecides and Flocculants 清除有害藻华的简单方法：用杀藻剂和絮凝剂喷洒泡沫

IF 4.8

ACS ES&T water Pub Date : 2025-04-16 DOI: 10.1021/acsestwater.5c0011110.1021/acsestwater.5c00111

Pedram AziziHariri, Istiak Hossain, Faraz Burni, Srinivasa R. Raghavan*, Vincent J. Lovko*, Tim I. McLean and Vijay T. John*,

{"title":"A Simple Method to Clear Harmful Algal Blooms: Sprayable Foams with Algaecides and Flocculants","authors":"Pedram AziziHariri, Istiak Hossain, Faraz Burni, Srinivasa R. Raghavan*, Vincent J. Lovko*, Tim I. McLean and Vijay T. John*, ","doi":"10.1021/acsestwater.5c0011110.1021/acsestwater.5c00111","DOIUrl":"https://doi.org/10.1021/acsestwater.5c00111https://doi.org/10.1021/acsestwater.5c00111","url":null,"abstract":"Harmful algal blooms (HABs) pose significant challenges to coastal communities and economies worldwide. The annual occurrence of “red tide” along the Gulf of Mexico is caused by Karenia brevis (KB) during periods of eutrophication. KB produces brevetoxins that harm marine life and human health. Current mitigation methods are limited, especially with regard to their scalability. Here, we describe a new technology where a surfactant-based foam is delivered to the surface of a bloom. The foam carries hydrogen peroxide producing algaecides (soluble gallic acid or particulate calcium peroxide) and/or a flocculant such as polyaluminum chloride (PAC). The release of hydrogen peroxide onto the surface of the water column results in high algaecide concentrations in surface layers with dilution further down the water column to potentially minimize impact to off-target organisms. PAC integrates easily into the foams and transports uniformly into the water column, leading to effective cell flocculation. Eco-friendly foams can thus be a practical way to clear HABs over large areas since they remain localized at the water surface, targeting the bloom, and eventually dissipate, leaving no residue. Our findings highlight the potential of surfactant foams as a versatile and effective delivery system for mitigating harmful algal blooms.Surfactant foams loaded with algaecides and flocculants offer a scalable, facile, and eco-friendly solution to mitigate harmful algal blooms.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 5","pages":"2547–2555 2547–2555"},"PeriodicalIF":4.8,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsestwater.5c00111","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Novel Method for Maintaining Low and Constant Salinity in Ice during Desalination of Binary Mixtures Using Directional Top-Cooling Solidification 定向顶冷凝固在二元混合物脱盐过程中保持冰低盐度和恒定盐度的新方法

IF 4.8

ACS ES&T water Pub Date : 2025-04-16 DOI: 10.1021/acsestwater.4c0118510.1021/acsestwater.4c01185

Narendra Ch. Kumar, Radhika Sarawagi and Virkeshwar Kumar*,

{"title":"A Novel Method for Maintaining Low and Constant Salinity in Ice during Desalination of Binary Mixtures Using Directional Top-Cooling Solidification","authors":"Narendra Ch. Kumar, Radhika Sarawagi and Virkeshwar Kumar*, ","doi":"10.1021/acsestwater.4c0118510.1021/acsestwater.4c01185","DOIUrl":"https://doi.org/10.1021/acsestwater.4c01185https://doi.org/10.1021/acsestwater.4c01185","url":null,"abstract":"Freezing-based desalination shows potential with lower energy needs and less environmental impact. However, current freezing methods produce ice with inconsistent salt levels, and new solutions are needed. This paper proposes a novel method inspired by Czochralski’s (directional top-cooling solidification) techniques, where motion is introduced during solidification to achieve uniform low salinity in ice. Three distinct setups were employed: setup 1 utilized conventional top-cooling, while setups 2 and 3 incorporated directional top-cooling solidification akin to the Czochralski method. The conventional top-cooling approach often leads to nonuniform salinity distribution within ice structures due to complex convection phenomena, whereas directional top-cooling solidification ensures uniform salinity throughout the ice volume by allowing denser solutes to accumulate at the bottom of the tank. Experimental results demonstrate uniform salinity levels along the lengths of ice, measuring 0.34 ± 0.04 wt % NaCl for 1.7 wt % NaCl solution and 0.7 ± 0.05 wt % NaCl for 3.4 wt % NaCl solution. In multistaging desalination, this saline ice again melts and is further desalinized using the same leads to 0.1 ± 0.05 wt % NaCl, which can be directly used for the drinking stage. Additionally, energy analysis indicates a ∼5% reduction in consumption compared to conventional top-cooling methods, highlighting the technique’s efficiency for sustainable desalination.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 5","pages":"2283–2290 2283–2290"},"PeriodicalIF":4.8,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

PFAS Destruction in IX Still Bottoms with Plasma Vortex Technology 等离子体涡旋技术在IX中的PFAS破坏

IF 4.8

ACS ES&T water Pub Date : 2025-04-16 DOI: 10.1021/acsestwater.4c0086310.1021/acsestwater.4c00863

Richard J. Higgins, HyoungSup Kim, Erika Houtz, Paul Newman, Daniel Casey and Young I. Cho*,

{"title":"PFAS Destruction in IX Still Bottoms with Plasma Vortex Technology","authors":"Richard J. Higgins, HyoungSup Kim, Erika Houtz, Paul Newman, Daniel Casey and Young I. Cho*, ","doi":"10.1021/acsestwater.4c0086310.1021/acsestwater.4c00863","DOIUrl":"https://doi.org/10.1021/acsestwater.4c00863https://doi.org/10.1021/acsestwater.4c00863","url":null,"abstract":"The present study investigated the feasibility of remediating per- and polyfluoroalkyl substances (PFAS)-contaminated groundwater using a combined regenerable ion exchange (IX) and plasma treatment approach at Joint Base Cape Cod in Massachusetts. Approximately 1,200,000 L of groundwater was treated with regenerable IX, meeting the treatment goal of 20 nanograms per liter sum of perfluorooctanesulfonate, perfluorooctanoate, perfluorohexanesulfonate, perfluorononanoate, perfluorheptanoate, and perfluorodecanoate. After IX media regeneration with a solvent brine solution, 45 L of a distilled PFAS concentrate (“still bottom”) containing approximately 640 mg per liter total PFAS was recovered, representing an overall process concentration factor of approximately 30,000. A novel plasma vortex technology was employed to destroy the PFAS in the still bottom, which destroyed 97% of the PFAS initially present in a 25% diluted still bottoms, with 99% of the destroyed PFAS recovered as inorganic fluoride. The energy consumption of the plasma vortex process treating the dilute still bottoms was 1885 kW h/m3, or 12,140 kW h/kg PFAS destroyed. The treated still bottom was further reduced to nondetectable PFAS levels using reverse osmosis (RO) treatment, with the RO retentate returned to the plasma treatment system, thus creating a completely closed loop for plasma-treated regenerant waste with no liquid discharge.Plasma vortex treatment, followed by reverse osmosis, resulted in a 99.99% PFAS destruction with no liquid discharge. TOF-8, calculated from the measured concentrations of 8 individual PFAS compounds, and inorganic fluoride ion (F-) as a function of plasma treatment time in a plasma vortex reactor.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 5","pages":"2110–2119 2110–2119"},"PeriodicalIF":4.8,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsestwater.4c00863","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prevalence and Prioritization of Phenolic and Organophosphate Ester Endocrine Disruptors and Their Transformation Products in Municipal Wastewater Treatment Plants 城市污水处理厂酚类和有机磷酸酯类内分泌干扰物及其转化产物的流行程度和优先顺序

IF 4.8

ACS ES&T water Pub Date : 2025-04-15 DOI: 10.1021/acsestwater.5c0003410.1021/acsestwater.5c00034

Jian Tang, Jianjie Chen, Lei Duan, Shengtao Ma, Wu Wen, Xunan Ning, Yun Yang, Chunzhao Chen* and Gang Yu,

{"title":"Prevalence and Prioritization of Phenolic and Organophosphate Ester Endocrine Disruptors and Their Transformation Products in Municipal Wastewater Treatment Plants","authors":"Jian Tang, Jianjie Chen, Lei Duan, Shengtao Ma, Wu Wen, Xunan Ning, Yun Yang, Chunzhao Chen* and Gang Yu, ","doi":"10.1021/acsestwater.5c0003410.1021/acsestwater.5c00034","DOIUrl":"https://doi.org/10.1021/acsestwater.5c00034https://doi.org/10.1021/acsestwater.5c00034","url":null,"abstract":"This study presents the first investigation of the occurrence, removal efficiencies, and ecological risks of 62 endocrine disrupting chemicals (EDCs), including parabens (PBs) and their halogenated derivatives, triclosan (TCS), bisphenols (BPs) and their halogenated derivatives, alkylphenols (APs), organophosphate triesters (tri-OPEs), and organophosphate diesters (di-OPEs), in 14 municipal wastewater treatment plants (WWTPs) within China’s Greater Bay Area. We developed a dansyl chloride derivatization method for detecting 34 phenolic EDCs, achieving detection limits as low as 0.005–2 ng/L. Bisphenol S, methylparaben, tris(1-chloro-2-propyl) phosphate, di-n-butyl phosphate, 4-nonylphenol, and TCS were prevalent in both influents and final effluents toward each EDC category. Most WWTPs achieved over 80% removal for BPs and PBs, likely due to biological oxidation in secondary treatment. However, the removal of chlorinated PBs, chlorinated BPs, APs, tri- and di-OPEs was generally insufficient. Especially for methyl 3,5-dichloro-4-hydroxybenzoate and 3-chlorobisphenol A, their detection frequencies and concentrations were significantly higher in final effluents compared to influents (p < 0.05). Risk assessment and toxicological priority index revealed 4-tert-octylphenol and tris(2-chloroethyl) phosphate as priority pollutants due to their potential high ecological risks. These findings underscore the urgent need to enhance wastewater treatment technologies, with a focus on removing priority pollutants to ensure the long-term sustainability of aquatic ecosystems.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 5","pages":"2455–2466 2455–2466"},"PeriodicalIF":4.8,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multivariate Optimization of Electrochemical Struvite Precipitation from Wastewater Using Principal Component Analysis 利用主成分分析法对废水中鸟粪石的电化学沉淀进行多元优化

IF 4.8

ACS ES&T water Pub Date : 2025-04-15 DOI: 10.1021/acsestwater.4c0125410.1021/acsestwater.4c01254

Alisha Zaffar, Muhil Raj Prabhakar, Sivaraman Jayaraman, Chong Liu and Paramasivan Balasubramanian*,

{"title":"Multivariate Optimization of Electrochemical Struvite Precipitation from Wastewater Using Principal Component Analysis","authors":"Alisha Zaffar, Muhil Raj Prabhakar, Sivaraman Jayaraman, Chong Liu and Paramasivan Balasubramanian*, ","doi":"10.1021/acsestwater.4c0125410.1021/acsestwater.4c01254","DOIUrl":"https://doi.org/10.1021/acsestwater.4c01254https://doi.org/10.1021/acsestwater.4c01254","url":null,"abstract":"Electrocoagulation can enhance struvite production with proper optimization to make it a promising future technology for resource recovery from wastewater. However, optimization of all of the factors is noneconomical and practically impossible. Hence, the study aims to investigate the ability of principal component analysis (PCA) to reduce the key influential parameters (16 input variables) based on their correlation with each other and the output for electro-coagulated nutrient recovery (N & P) as struvite using a magnesium-based anode. The result was evaluated using principal components: selected based on the eigenvalue (≥1), variance (≥7), cumulative variability, and scree plot representing the contribution of the input variable on the data set. The selected first five and six PCs accounted for 81.87% and 83.05% cumulative variability for N & P recovery, respectively. Additionally, analyses derived from loading plot, score plot, and biplot indicate that several factors─namely, current density, interelectrode distance, electrolysis duration, pH, cathode material, and electrode surface area by volume ratio and nutrient-rich wastewater significantly influence the corrosion of anode. The study further reveals that the principal factors are intricately interconnected, resulting in enhanced yields. Overall, this research delineates specific condensed criteria that could facilitate upgrading of the technology, thereby optimizing efficiency and cost-effectiveness.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 5","pages":"2361–2372 2361–2372"},"PeriodicalIF":4.8,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inoculation Improves Microbial Manganese Removal during the Start-Up of Rapid Sand Filters 接种提高快速砂滤池启动时微生物除锰效果

IF 4.8

ACS ES&T water Pub Date : 2025-04-15 DOI: 10.1021/acsestwater.5c0005010.1021/acsestwater.5c00050

Signe Haukelidsaeter*, Alje S. Boersma, Thilo Behrends, Wytze K. Lenstra, Niels A. G. M. van Helmond, Lina Piso, Frank Schoonenberg, Paul W. J. J. van der Wielen, Maartje A. H. J. van Kessel, Sebastian Lücker and Caroline P. Slomp,

{"title":"Inoculation Improves Microbial Manganese Removal during the Start-Up of Rapid Sand Filters","authors":"Signe Haukelidsaeter*, Alje S. Boersma, Thilo Behrends, Wytze K. Lenstra, Niels A. G. M. van Helmond, Lina Piso, Frank Schoonenberg, Paul W. J. J. van der Wielen, Maartje A. H. J. van Kessel, Sebastian Lücker and Caroline P. Slomp, ","doi":"10.1021/acsestwater.5c0005010.1021/acsestwater.5c00050","DOIUrl":"https://doi.org/10.1021/acsestwater.5c00050https://doi.org/10.1021/acsestwater.5c00050","url":null,"abstract":"Long start-up times to achieve manganese removal in rapid sand filters can pose challenges for drinking water companies. This study assessed the start-up dynamics of manganese removal in two full-scale dual-media rapid sand filters treating groundwater containing iron, ammonium, and manganese. After inoculation with 20% biologically active coated sand, ammonium and manganese removal efficiencies of ∼60–70% and ∼30–50% were achieved, respectively. Complete removal of ammonium occurred after ∼8 weeks, but ∼17 and ∼25 weeks were required for manganese removal in the two filters. Full manganese removal, accompanied by manganese oxide formation on new grains, was achieved when ∼50% of the ammonium was removed within the anthracite layer. X-ray spectroscopy of manganese oxides in the mineral coatings indicated a dominance of biologically produced manganese oxide with a structure similar to that of δ-MnO2, suggesting continuous microbial manganese oxidation in inoculated rapid sand filters. Concomitant changes in 16S rRNA gene profiles combined with qPCR and solute profiles suggest a key role for Nitrospira in both nitrification and manganese oxidation. We show that inoculation with biologically active filter medium enhances the efficiency of ammonium and manganese removal during filter start-up, offering a promising improvement strategy for rapid sand filters.Inoculation of rapid sand filters improves ammonium and manganese removal, potentially due to increased Nitrospira abundance.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 5","pages":"2479–2489 2479–2489"},"PeriodicalIF":4.8,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsestwater.5c00050","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluating Orthophosphate-Silicate Blend as an Alternative to Blended Phosphates for Corrosion Control and Sequestration. 评价正磷酸盐-硅酸盐共混物作为混合磷酸盐控制和封存腐蚀的替代品。

IF 4.8

ACS ES&T water Pub Date : 2025-04-15 eCollection Date: 2025-05-09 DOI: 10.1021/acsestwater.5c00159

Kalli M Hood, Benjamin F Trueman, Graham A Gagnon

{"title":"Evaluating Orthophosphate-Silicate Blend as an Alternative to Blended Phosphates for Corrosion Control and Sequestration.","authors":"Kalli M Hood, Benjamin F Trueman, Graham A Gagnon","doi":"10.1021/acsestwater.5c00159","DOIUrl":"https://doi.org/10.1021/acsestwater.5c00159","url":null,"abstract":"The presence of iron and manganese in drinking water distribution systems can contribute to discoloration, taste and odor issues, scale buildup, deposition corrosion, and the adsorption and transport of lead. Sequestrants can minimize aesthetic concerns and scale buildup, but they are risky due to increased lead/copper solubility. Here, we used a bench-scale batch reactor to evaluate orthophosphate with sodium silicate or polyphosphate for simultaneous lead corrosion control in waters with and without iron/manganese. Consistent with previous work, ortho-trimetaphosphate increased the total lead (23%). Increased dissolved lead was also observed for both ortho-trimetaphosphate (50%) and ortho-silicate (30%) treatments. When iron/manganese was present, orthophosphate-silicate was associated with 5-12% less total lead relative to orthophosphate under the same conditions, and the effect of ortho-trimetaphosphate was pH dependent. The addition of silicate and trimetaphosphate also reduced water discoloration compared to orthophosphate, as measured by apparent color. Here, the orthophosphate-silicate blend did not significantly increase total lead in the absence of high iron and manganese but increases to the highly mobile, dissolved fraction should be noted. Utilities seeking to control lead for compliance purposes, while simultaneously managing iron and manganese for consumer confidence, should explore orthophosphate-silicate as a possible solution in their corrosion control assessments.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 5","pages":"2630-2636"},"PeriodicalIF":4.8,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12070402/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144082652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0