Environmental Science: Water Research & Technology最新文献

{"title":"Development and evaluation of hydrogen peroxide mediated zinc oxide photocatalytic nanoparticles from Peepal (Ficus Religiosa) leaf extract for the treatment of actual tannery wastewater","authors":"Ganeshkumar Govindasamy and Arjunan Babu Ponnusami","doi":"10.1039/D4EW00713A","DOIUrl":"https://doi.org/10.1039/D4EW00713A","url":null,"abstract":"<p >Advanced oxidation processes, such as heterogeneous photocatalysis, can break down recalcitrant compounds. The overall effectiveness of the majority of semiconductor-based photocatalysts during continuous operation and in actual wastewater matrices is still insufficient. This research examines the concurrent removal of chemical oxygen demand and chromium(<small>VI</small>) from real tannery wastewater. This is achieved through the application of a photocatalyst namely zinc oxide nanoparticles prepared using <em>Ficus Religiosa</em> leaf extract. The Tauc plot revealed the bandgap energy of zinc oxide to be 3.40 eV and the XPS survey picture confirmed that the binding energy between two peaks of Zn<small>_3/2</small> and Zn<small>_1/2</small> is 23.15 eV, confirming the formation of zinc oxide. 97.25% chromium(<small>VI</small>) and 89.3% chemical oxygen demand removal was achieved under optimal conditions of pH, H<small>₂</small>O<small>₂</small> and the catalyst dosage level of 7, 19.5 mM, and 4 mg L<small>⁻¹</small>, respectively. Also, the degradation studies followed pseudo first order kinetics with a rate constant value of 0.0827 min<small>⁻¹</small> and an <em>R</em><small>²</small> value of 0.98. Furthermore, the catalyst's reusability was confirmed under optimal conditions. This article shows an eco-friendly method for synthesizing zinc oxide nanoparticles.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 2","pages":" 508-523"},"PeriodicalIF":3.5,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107238","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":"Celebrating 10 years of Environmental Science: Water Research & Technology","authors":"Graham A. Gagnon, Paige J. Novak and David M. Cwiertny","doi":"10.1039/D4EW90049A","DOIUrl":"https://doi.org/10.1039/D4EW90049A","url":null,"abstract":"<p >As the current and past Editors-in-Chief of <em>Environmental Science: Water Research &amp; Technology</em> (<em>ES:WRT</em>), we are thrilled to celebrate the journal's 10-year anniversary!</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 2","pages":" 165-166"},"PeriodicalIF":3.5,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107351","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":"Synergistic impact of rice husk biomass derived carbon supports on the performance of biogenic Fe0-catalyzed advanced oxidation processes for oxytetracycline remediation†","authors":"Sandeep Kumar, Parminder Kaur, Jyoti Rani, Janpreet Singh, Sandeep Kaushal, J. Nagendra Babu and Sunil Mittal","doi":"10.1039/D4EW00912F","DOIUrl":"https://doi.org/10.1039/D4EW00912F","url":null,"abstract":"<p >This study explores the use of rice husk biomass and its derived carbon materials—hydrochar (HC) and biochar (BC)—as supports for biogenic zerovalent iron (ZVI) nanocomposites (ZVI@RH, ZVI@HC, and ZVI@BC) in advanced oxidation processes (AOPs) for the degradation of oxytetracycline (OTC). The catalysts were characterized using FTIR, XRD, FESEM, and XPS techniques, and their performance in activating peroxymonosulfate (PMS) for OTC degradation was assessed. Results showed that the ZVI@BC nanocomposite outperformed ZVI@RH and ZVI@HC in OTC removal through heterogeneous Fenton-like processes. The addition of PMS further enhanced OTC degradation by generating more reactive oxygen species (ROS), making the process more efficient than the Fenton process alone. The higher surface defects in BC, resulting from pyrolysis, improved OTC adsorption and degradation, and facilitated more effective ZVI-mediated PMS activation in ZVI@BC, achieving nearly 98.3% OTC removal from the aqueous solution. The involvement of various ROS in OTC degradation was examined using radical scavengers, and DFT calculations proposed a degradation pathway by identifying ROS attack sites on the OTC chromophore. High-resolution mass spectrometry (HRMS) analysis was used to identify reaction intermediates. This study emphasizes the potential of using agricultural waste-derived materials in AOPs, presenting a sustainable and cost-effective method for environmental remediation and OTC antibiotic degradation.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 2","pages":" 242-261"},"PeriodicalIF":3.5,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107355","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":"Effect of intracellular algal organic matter and nitrate on disinfection byproduct formation in chlorinated water after UV/H2O2 and UV/Cl2 advanced oxidation processes†","authors":"Fateme Barancheshme and Olya S. Keen","doi":"10.1039/D4EW00749B","DOIUrl":"https://doi.org/10.1039/D4EW00749B","url":null,"abstract":"<p >Advanced oxidation processes (AOPs) are one of the highly effective alternatives for treatment of algal toxins in drinking water. Water that contains algal toxins commonly has organic matter of algal origin and elevated nitrate. Organic matter undergoes transformations during advanced oxidation processes and may change in a way that increases disinfection byproduct (DBP) formation when water is chlorinated post-AOP. Nitrate forms reactive nitrogen species under certain UV wavelengths that can also interact with organic matter and change its properties in a way that increases post-AOP DBP formation. Two types of advanced oxidation processes (UV/H<small>₂</small>O<small>₂</small> and UV/Cl<small>₂</small>) were compared in their ability to change the formation potential of regulated DBPs [four trihalomethanes (THMs) and nine haloacetic acids (HAAs)] and an unregulated nitrogenous DBP (N-DBP) <em>N</em>-nitrosodimethylamine (NDMA) due to the interaction of the process with algal organic matter (AOM) and nitrate in the water. The two AOPs showed no significant differences in post-treatment DBP formation under any of the tested conditions. Higher levels of treatment with both processes led to slightly higher formation potential of some THMs. AOM made a poor precursor for additional THMs and three HAAs (six not consistently detected), but had a higher NDMA yield than background organic matter (0.59 ng mg<small>⁻¹</small>-C <em>vs.</em> 0.18 ng mg<small>⁻¹</small>-C, <em>p</em> = 0.038). Nitrate suppressed chlorinated THMs and favored increased concentrations of brominated THMs and HAAs, resulting in higher percent incorporation of background bromide into DBPs. Moreover, nitrate addition (20 mg-N L<small>⁻¹</small> of added nitrate compared to the background level of 0.47 mg-N L<small>⁻¹</small>) led to 11 times higher NDMA formation. Formation of N-DBPs during post-AOP chlorination in the presence of AOM and nitrate warrants additional investigation.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 2","pages":" 494-507"},"PeriodicalIF":3.5,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ew/d4ew00749b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107261","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":"A machine learning framework to predict PPCP removal through various wastewater and water reuse treatment trains†","authors":"Joung Min Choi, Vineeth Manthapuri, Ishi Keenum, Connor L. Brown, Kang Xia, Chaoqi Chen, Peter J. Vikesland, Matthew F. Blair, Charles Bott, Amy Pruden and Liqing Zhang","doi":"10.1039/D4EW00892H","DOIUrl":"10.1039/D4EW00892H","url":null,"abstract":"<p >The persistence of pharmaceuticals and personal care products (PPCPs) through wastewater treatment and resulting contamination of aquatic environments and drinking water is a pervasive concern, necessitating means of identifying effective treatment strategies for PPCP removal. In this study, we employed machine learning (ML) models to classify 149 PPCPs based on their chemical properties and predict their removal <em>via</em> wastewater and water reuse treatment trains. We evaluated two distinct clustering approaches: C1 (clustering based on the most efficient individual treatment process) and C2 (clustering based on the removal pattern of PPCPs across treatments). For this, we grouped PPCPs based on their relative abundances by comparing peak areas measured <em>via</em> non-target profiling using ultra-performance liquid chromatography-tandem mass spectrometry through two field-scale treatment trains. The resulting clusters were then classified using Abraham descriptors and log <em>K</em><small>_ow</small> as input to the three ML models: support vector machines (SVM), logistic regression, and random forest (RF). SVM achieved the highest accuracy, 79.1%, in predicting PPCP removal. Notably, a 58–75% overlap was observed between the ML clusters of PPCPs and the Abraham descriptor and log <em>K</em><small>_ow</small> clusters of PPCPs, indicating the potential of using Abraham descriptors and log <em>K</em><small>_ow</small> to predict the fate of PPCPs through various treatment trains. Given the myriad of PPCPs of concern, this approach can supplement information gathered from experimental testing to help optimize the design of wastewater and water reuse treatment trains for PPCP removal.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 2","pages":" 481-493"},"PeriodicalIF":3.5,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11694563/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929952","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":"Efficiency and mechanisms of combined persulfate and nanofiltration for the removal of typical perfluorinated compounds","authors":"Lihua Sun, Yan Zhang, Zixuan Xi, Ruiying Li and Kaiquan Zhang","doi":"10.1039/D4EW00819G","DOIUrl":"https://doi.org/10.1039/D4EW00819G","url":null,"abstract":"<p >Perfluorinated compounds (PFCs) are a class of emerging pollutants that are commonly detected in surface water and pose significant risks to both the environment and public health. This study investigates a combined treatment method for removing perfluorooctanoic acid (PFOA), a prevalent PFC found in micro-polluted surface water. The method integrates nanoscale zero-valent iron (nFe)-activated persulfate (PS) pre-oxidation with conventional water treatment processes—coagulation, sedimentation, and sand filtration—combined with nanofiltration (NF). This study primarily aims to evaluate the efficiency of this combined process for PFOA removal and to elucidate the mechanisms underlying PS oxidation and NF separation. The treatment sequence, comprising nFe/PS pre-oxidation, conventional treatment, and NF, was strategically designed considering the specific roles of each process in PFOA removal. In the initial stage, nFe-activated PS generates sulfate radicals (SO<small>₄</small><small>⁻</small>·) and hydroxyl radicals (OH·), which oxidize and degrade PFOA. The subsequent conventional treatment removes the majority of degradation byproducts and suspended solids. Finally, NF retains both PFOA and its oxidation products, thereby ensuring high removal efficiency. Experimental results indicate that an optimal PS dosage of 0.2 mM and an nFe-to-PS molar ratio of 1 : 1 achieved the maximum efficiency for PFOA removal. Among the tested sequences, “nFe/PS pre-oxidation + conventional treatment + NF” achieved the highest removal rate, exceeding 99%. Furthermore, this sequence resulted in the lowest surface potential of the NF membrane, which enhanced electrostatic interactions between the membrane and PFOA. This reduction in surface potential, combined with the formation of C–O bonds between PFOA and the NF membrane, further enhanced PFOA adsorption onto the membrane surface. The combined process of nFe/PS pre-oxidation, conventional treatment, and nanofiltration effectively removes PFOA from micro-polluted surface water, thereby contributing to improved drinking water safety.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 2","pages":" 449-460"},"PeriodicalIF":3.5,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107258","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":"Kinetics and mechanism of hydrolysis of PF6− accelerated by H+ or Al3+ in aqueous solution†","authors":"Takuto Miyashita, Kouji Yasuda and Tetsuya Uda","doi":"10.1039/D4EW00758A","DOIUrl":"https://doi.org/10.1039/D4EW00758A","url":null,"abstract":"<p >Treatment of wastewater containing PF<small>₆</small><small>⁻</small> is required during hydrometallurgical recycling of lithium-ion batteries. Because of the kinetic stability of PF<small>₆</small><small>⁻</small> in aqueous solution, the decomposition study into PO<small>₄</small><small>³⁻</small> or F<small>⁻</small> is required for wastewater treatment. In our previous report, the hydrolysis of PF<small>₆</small><small>⁻</small> was shown to be accelerated by adding Al<small>³⁺</small> and elevating the solution temperature. In this work, the kinetics and mechanism of the hydrolysis of PF<small>₆</small><small>⁻</small> at several pH and Al<small>³⁺</small> concentrations were investigated for more efficient wastewater treatment. The solutions containing LiPF<small>₆</small> at various pH and AlCl<small>₃</small> concentrations were kept at 90 °C, and the concentration changes of PF<small>₆</small><small>⁻</small>, PO<small>₂</small>F<small>₂</small><small>⁻</small>, PO<small>₃</small>F<small>²⁻</small>, PO<small>₄</small><small>³⁻</small>, and F<small>⁻</small> were measured by ion chromatography. The measurement results were analyzed assuming pseudo-first-order kinetics. The results showed that Al<small>³⁺</small> and H<small>⁺</small> accelerated the hydrolysis of PO<small>₂</small>F<small>₂</small><small>⁻</small> and PO<small>₃</small>F<small>²⁻</small>, but the levels of accelerating effects were different. More specifically, the accelerating effects of Al<small>³⁺</small> are higher in the order PF<small>₆</small><small>⁻</small> &gt; PO<small>₂</small>F<small>₂</small><small>⁻</small> &gt; PO<small>₃</small>F<small>²⁻</small>, while the accelerating effects of H<small>⁺</small> are in the opposite order. Based on the discussion, a more efficient treatment process for wastewater containing PF<small>₆</small><small>⁻</small> was proposed. The proposed process is expected to reduce heating costs and processing time compared to previously reported ones.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 2","pages":" 281-292"},"PeriodicalIF":3.5,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107333","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":"Pathogen and indicator trends in southern Nevada wastewater during and after the COVID-19 pandemic†","authors":"Katherine Crank, Katerina Papp, Casey Barber, Kai Chung, Emily Clements, Wilbur Frehner, Deena Hannoun, Travis Lane, Christina Morrison, Bonnie Mull, Edwin Oh, Phillip Wang and Daniel Gerrity","doi":"10.1039/D4EW00620H","DOIUrl":"https://doi.org/10.1039/D4EW00620H","url":null,"abstract":"<p >Characterization of wastewater concentrations of human enteric pathogens and human fecal indicators provides valuable insights and data for use by regulators and other stakeholders when developing treatment criteria for water reuse applications, performing quantitative microbial risk assessments, or conducting microbial source tracking. Wastewater samples collected over three years during and after the COVID-19 pandemic were analyzed retrospectively (March 2020–September 2022) and prospectively (October 2022–December 2023) by qPCR for molecular markers of adenovirus, enterovirus, norovirus GI &amp; GII, as well as the human fecal indicators pepper mild mottle virus, crAssphage, and HF183 (<em>n</em> = 1112). A sub-campaign was conducted, and wastewater samples were tested for the culturable enteric viruses adenovirus and enterovirus (<em>n</em> = 56) and the protozoan parasites <em>Cryptosporidium</em> and <em>Giardia</em> (<em>n</em> = 73) over one year (January–December 2023)<em>.</em> All assays had high detection rates, ranging from 71% to 100%, and were fit to log-normal distributions. All molecular markers for enteric pathogens displayed seasonal and geographic variation, potentially explained by seasonal epidemiology of gastrointestinal illness, differing populations, and differing sample types. Additionally, the impact of Nevada-specific COVID-19 public health guidance (<em>e.g.</em>, mask mandates, stay-at-home orders) on enteric pathogen concentrations was characterized, with significantly higher concentrations of molecular markers observed in “non-pandemic” conditions. This study provides high quality (<em>i.e.</em>, high sensitivity, minimally censored, recovery adjusted) pathogen and indicator datasets with insights for use in academic, public health/epidemiological, and industry/regulatory applications.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 2","pages":" 262-280"},"PeriodicalIF":3.5,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ew/d4ew00620h?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107356","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":"Wastewater surveillance for public health: Quo Vadis?","authors":"Graham Gagnon, Lauren Stadler, Aaron Bivins, Laurent Moulin and Masaaki Kitajima","doi":"10.1039/D4EW90048K","DOIUrl":"https://doi.org/10.1039/D4EW90048K","url":null,"abstract":"<p >A graphical abstract is available for this content</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 1","pages":" 8-9"},"PeriodicalIF":3.5,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859373","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":"Determination of Pb2+ in natural water with a polymer electrode coupled with a flow analysis device†","authors":"Guiyun Zhang and Zhiwei Lai","doi":"10.1039/D4EW00900B","DOIUrl":"https://doi.org/10.1039/D4EW00900B","url":null,"abstract":"<p >Lead (Pb<small>²⁺</small>) has adverse effects on the human body due to its non-biodegradability and bioaccumulation. In this study, a flow analysis device was designed for <em>in situ</em> determination. A poly(pyrrole thiourea) electrode was used for the determination of Pb<small>²⁺</small> in water coupled with this flow analysis device. The interference of co-existing ions and the precision, as well as the repeatability were examined. The relative standard deviation of Pb<small>²⁺</small> was found to be 4.35% by repeating the test 25 times of 15 μg L<small>⁻¹</small> standard solution. Under the optimized detection conditions, a limit of detection (3<em>σ</em>/slope) of 0.25 μg L<small>⁻¹</small> was obtained between 2.5 and 100 μg L<small>⁻¹</small>. Finally, continuous determination of Pb<small>²⁺</small> in drinking water and lake water in campus was carried out, which verified the applicability of the device in the detection of Pb<small>²⁺</small> in natural water.</p>","PeriodicalId":75,"journal":{"name":"Environmental Science: Water Research & Technology","volume":" 2","pages":" 461-466"},"PeriodicalIF":3.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107259","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}