Water SA最新文献

{"title":"Assessment of Spatio-Temporal Dynamics of Dal Lake’s Trophic State","authors":"Irfan Ali, Elena Neverova-Dziopak, Zbigniew Kowalewski","doi":"10.3390/w17030314","DOIUrl":"https://doi.org/10.3390/w17030314","url":null,"abstract":"The ecosystem of Dal Lake, an important freshwater lake in Srinagar, India, has been rapidly degraded in recent decades due to intensified eutrophication. The main causes of eutrophication were determined to be different types of human activities in the catchment area and its inappropriate development as well as excessive loads of pollutants introduced into the lake. The heightened algal blooms brought significant water quality deterioration, a reduction in indigenous fish populations, and a general disturbance of the ecological balance of the lake. Such changes adversely influenced the living conditions of the inhabitants depending on the lake for tourism, fishing, and other economic pursuits. The aim of the research was the evaluation of the specificity of the course and spatio-temporal dynamics of Dal Lake eutrophication process on the base of accurate assessment of its actual trophic state. The applied assessment methodology was based on the biotic balance approach. As an indicator of the biotic balance in water, the Index of Trophic State (ITS) was chosen and adopted for the conditions of the lake ecosystem in humid subtropical climate conditions. The assessment was based on data from a five-year lake monitoring period (2019–2023) and analyzed for four lake basins: Hazaratbal, Nishat, Nagin, and Gagribal. The results indicated a steady increase in the lake’s trophic status, with the Hazaratbal basin evolving from mesotrophic to eutrophic, while the other basins progressed from meso-eutrophic to eutrophic during the research period. At the end of the research period, the whole lake was classified as eutrophic, with a modest inclination towards heightened eutrophication severity. The research underscores the pressing need for elaboration of a holistic lake management approach, where ITS, which has proven to be a valuable and reliable express-monitoring tool, can be used for obtaining information necessary for solving different applied tasks for protection and conservation strategies.","PeriodicalId":23623,"journal":{"name":"Water SA","volume":"17 3","pages":"314-314"},"PeriodicalIF":0.0,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4441/17/3/314/pdf?version=1737634887","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147897413","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":"Dialdehyde Cellulose Fabric Membranes Enable Chemical Adsorption of Amino-Containing Dyes for Wastewater Treatment","authors":"Zhaoju Zhang, Hongyang Ma, Benjamin S. Hsiao","doi":"10.3390/w17020281","DOIUrl":"https://doi.org/10.3390/w17020281","url":null,"abstract":"Dialdehyde cellulose fabric (DACF) membranes with varying degrees of oxidation were fabricated using periodate oxidation and were employed for the chemical adsorption of amino-groups containing dyes from wastewater. The aldehyde group contents of DACF membranes were adjusted by altering oxidation time, which was confirmed by titration experiments. The chemical structure and morphology of DACF membranes were characterized using ATR-FTIR, TGA, SCA, SEM, XPS, and XRD measurements. The optimized DACF membrane, which was treated for an oxidation time of 24 h and has an aldehyde content of 2.97 mmol/g, was used for the chemical adsorption of amino-containing dye molecules. This process relies on the Schiff base reaction between the amino groups of the target dye molecule and the aldehyde groups of the membrane. Two typical cationic dyes, fuchsin basic and chrysoidine, containing aromatic amino groups, were chosen to determine the adsorption capacity of the DACF membrane. The adsorption kinetics, isotherms, and thermal dynamics of the DACF membrane were investigated comprehensively, while both pseudo-first- and pseudo-second-order kinetics models fit well, indicating the complicated chemical/diffusion adsorption process, where the hydrophobic properties of the DACF membrane retarded the adsorption rate. The maximum adsorption capacities of the DACF membrane against fuchsin basic and chrysoidine were 108.69 and 46.29 mg/g, respectively, as determined by Langmuir isotherm simulations. Various competing ions such as Na+, Ca2+, Cl−, and SO42− at high concentrations of 10,000 ppm were used to challenge the adsorption capability of the DACF membrane, with negligible effects observed. A new adsorption mechanism based on chemical/diffusion interaction was proposed. Bovine serum albumin (BSA), fuchsin basic, and chrysoidine were mixed to simulate the multicomponent wastewater containing dissolved organic nitrogen (DON) and demonstrated the adsorption process; the direct adsorption capacity of the DACF membrane was up to 63.0%. This work offers a new method for the highly efficient removal of organic pollutants by a chemical reaction approach.","PeriodicalId":23623,"journal":{"name":"Water SA","volume":"17 2","pages":"281-281"},"PeriodicalIF":0.0,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4441/17/2/281/pdf?version=1737363442","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333094","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":"Dynamic Characteristics and Environmental Driving Factors of Phytoplankton Communities in Plateau Rivers: The Case of the Lhasa River","authors":"Suxing Fu, Qiu-Fu Huang, Junting Li, He Gao, Fei Liu, Yuting Duan, H. Li, Yinhua Zhou, Rongrong Liao, Luo Lei, Jian Su, Chaowei Zhou, Haiping Liu","doi":"10.3390/w17020283","DOIUrl":"https://doi.org/10.3390/w17020283","url":null,"abstract":"The dynamic changes in plateau river ecosystems and the driving mechanisms of environmental factors have garnered significant attention. Phytoplankton, a core component of aquatic ecosystems, can directly reflect changes in the aquatic environment. This study focuses on the phytoplankton in the Lhasa River Basin, including the riverbed from the source to the river mouth, five largest tributaries, and two adjacent wetlands. We analyzed the spatial and temporal variation characteristics of phytoplankton and explored the environmental driving mechanisms based on four field surveys conducted between September 2019 and March 2021. Results showed that a total of 127 species of phytoplankton from six algal phyla were identified, including Cyanobacteria. Among these, Bacillariophyta was the dominant group, accounting for 41.7% of the identified species. Spatially, phytoplankton diversity showed a decreasing trend from upstream to downstream while temporally peaking in spring and autumn. Redundancy analysis revealed that upstream phytoplankton were driven by total hardness and altitude, midstream by pH and potassium ions, and downstream by nitrate and ammonium nitrogen. Classification and regression tree analysis showed total hardness, magnesium ions, and nitrite were key factors influencing phytoplankton abundance, diversity, and evenness. This study highlights the ecological dynamics and driving mechanisms of phytoplankton communities in the Lhasa River, demonstrating their high sensitivity to environmental factors. These findings could help to establish phytoplankton as critical indicators of aquatic ecosystem health and provide scientific guidance for the conservation and management of the plateau river ecosystems.","PeriodicalId":23623,"journal":{"name":"Water SA","volume":"17 2","pages":"283-283"},"PeriodicalIF":0.0,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4441/17/2/283/pdf?version=1737368249","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147889853","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":"Glucose as a Metabolic Enhancer: Promoting Nonylphenol Detoxification by Chlorella pyrenoidosa","authors":"Jing Yuan, Lin Zhao, Yanting Li, Guangnan Xing, Danning Chen, Yongkui Yang","doi":"10.3390/w17020244","DOIUrl":"https://doi.org/10.3390/w17020244","url":null,"abstract":"The environmental treatment of endocrine-disrupting compounds (EDCs) has attracted significant attention. Nonylphenol (NP), a highly toxic EDC with widespread distribution, presents an urgent challenge requiring effective removal strategies. Although microalgae-based treatments offer environmentally friendly and cost-effective solutions, the high toxicity level of NP impedes this process. Analysis was conducted on cell biomass, cell morphology, extracellular polymeric substances (EPSs), and the degradation of nonylphenol in Chlorella pyrenoidosa treated with nonylphenol and glucose. Glucose restored the algal biomass to 2.23 times its original level, reduced cellular damage, and maintained normal physiological activities. Glucose also stimulated algal metabolism and promoted the secretion of EPSs. The polysaccharide content of soluble EPSs (S-EPSs) increased by 32.7%, whereas that of the bound EPSs (B-EPSs) increased by 55.5%. The three-dimensional excitation–emission matrix fluorescence spectroscopy of B-EPS indicated that glucose enhanced tryptophan secretion. Glucose showed great potential as a biostimulant to enhance NP bioremediation efficiency in aquatic ecosystems. This finding indicates that the nonylphenol remediation of wastewater can be integrated with microalgal biomass recovery, creating opportunities for revenue generation.","PeriodicalId":23623,"journal":{"name":"Water SA","volume":"17 2","pages":"244-244"},"PeriodicalIF":0.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4441/17/2/244/pdf?version=1737096016","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147332249","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":"Removal of TP, COD, and NH4+-N in Simulated Slaughtering Wastewater by Two Kinds of Immobilized Microalgal Spheres","authors":"Wei Xu, Xiaoping Zhang, Xiaoping Zhang, Guichang Zhang, Xin Zhang, Xin Zhang","doi":"10.3390/w17020179","DOIUrl":"https://doi.org/10.3390/w17020179","url":null,"abstract":"The treatment of wastewater using microalgae is regarded as a green and potential technology. However, its engineering application has been largely hindered because of the limitation of microalgae separation and harvesting. Therefore, immobilization technology has been widely used to embed microalgae for wastewater treatment. In this paper, sodium alginate (SA) and polyvinyl alcohol (PVA) as the common immobilized carriers were used to immobilize ankistrodesmus falcatus for simulated slaughtering wastewater (SSW) treatment. The experimental results of the mass transfer and adsorption of immobilized carriers were found to show that the mass transfer of SA-SiO2 gel balls (SS-GB) was better than PVA-SA gel balls (PS-GB) and that the adsorption of PS-GB was better than SS-GB. When immobilizing microalgae with the two kinds of carriers, it was found that SA-SiO2 microalgal spheres (SS-MS) were better than PVA-SA microalgal spheres (PS-MS) for the maintenance of microalgal cell activity and that PS-MS were better than SS-MS for the resistance to biodegradation. This is because the carrier of PS-MS had a thick shell and dense structure, while the carrier of SS-MS had a thin shell and loose structure. The results of SSW treatment by PS-MS and SS-MS were found to show that the total phosphorus (TP) removal rates of PS-MS and SS-MS were 90.31% and 86.60%, respectively. This indicates that the TP removal effect of PS-MS was superior to that of SS-MS. The adsorption kinetics simulation showed that the adsorption of TP onto PS-GB was controlled by chemisorption and that the adsorption of TP onto SS-GB was controlled by physical adsorption. The chemical oxygen demand (COD) and ammonium nitrogen (NH4+-N) removal of PS-MS were 9.30% and 10.70%, respectively, and the COD and NH4+-N removal of SS-MS were 54.60% and 62.08%, respectively. This indicates that the COD and NH4+-N removal effect of SS-MS were superior to PS-MS. This is the result of the combined action of the degradation by microalgal cells and adsorption by the carrier.","PeriodicalId":23623,"journal":{"name":"Water SA","volume":"17 2","pages":"179-179"},"PeriodicalIF":0.0,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4441/17/2/179/pdf?version=1736508439","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147902725","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":"Photo-Catalytic Reduction of Nitrate by Ag-TiO2/Formic Acid Under Visible Light: Selectivity of Nitrogen and Mechanism","authors":"Yuanyuan Shi, Yi Min Xie, Jun Xia, Xiaolin Zhang, Hui Cheng, Jialin Chen","doi":"10.3390/w17020155","DOIUrl":"https://doi.org/10.3390/w17020155","url":null,"abstract":"Ubiquitous nitrate (NO3−) in groundwater sources is considered a hazard compound for human health. Photo-catalytic reduction by Ag-TiO2/formic acid/visible light represents an emerging method for NO3− removal without secondary pollution. In this contribution, the removal of NO3− by photo-catalytic reduction and the selectivity of N2 were systematically investigated under varied conditions, including concentrations of Ag-TiO2, NO3−, and formic acid (HCOOH). The removal efficiency of NO3− reached 84.47%, 82.68% of which was converted to N2 under the optimal conditions: NO3− at 50 mg-N/L, Ag-TiO2 at 1.0 g/L, HCOOH at 20.05 mmol/L, and reaction time at 120 min. The removal of NO3− was enhanced mainly by CO2− rather than by photo-generated electrons or HCOO−. The results of this study indicated that the production of ·CO2− by Ag-TiO2 and HCOOH under visible light catalysis can achieve efficient NO3− removal.","PeriodicalId":23623,"journal":{"name":"Water SA","volume":"17 2","pages":"155-155"},"PeriodicalIF":0.0,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4441/17/2/155/pdf?version=1736402023","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147914632","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":"An Efficient Photocatalytic Material, rGO-TiO2, That Can Be Industrially Produced: Fabrication and Structural Characterization","authors":"Nan Xiong, Yansen Guo, Yanyan Nie, Yuqing Yao, Zhemian Ying, Wei Zhang, Renduo Liu, Xiaoling Wu, He Zhou, Limin Zhou, Ying Wang, Jianying He, Yan Long","doi":"10.3390/w17020161","DOIUrl":"https://doi.org/10.3390/w17020161","url":null,"abstract":"As a well-known photocatalyst, TiO2 still suffers from rapid electron–hole recombination and limited visible light absorption. To overcome these challenges, the combination of graphene and TiO2 has been proposed. However, traditional methods such as ball milling and hydrothermal synthesis face limitations, including high energy consumption and complex procedures. Here, we develop a simple and industrially feasible method to prepare reduced graphene oxide (rGO)-coated TiO2 nanoparticles, referred to as rGO-TiO2 composites. The optimized rGO-TiO2 composites exhibit an enhanced photocatalytic degradation of rhodamine B (RhB) under simulated sunlight conditions, about 99.95% for 4% rGO-TiO2 within 80 min. The first-order reaction rate constant (k) of 4% rGO-TiO2 (0.0867 min−1) is 5.42 times higher than that of nano TiO2 (0.0135 min−1). The key reactive species involved in the degradation process are identified. Additionally, the effects of pH and NaCl concentration on the degradation efficiency of rGO-TiO2 are also investigated. The 4% rGO-TiO2 composite exhibits an excellent photocatalytic activity within the pH range of 3.87–11.89, and the NaCl concentration does not affect its photocatalytic efficiency. After characterization, the enhanced photocatalytic activity is ascribed to the introduction of rGO and the generation of surface oxygen vacancies (OV) and Ti3+ in TiO2 crystals.","PeriodicalId":23623,"journal":{"name":"Water SA","volume":"17 2","pages":"161-161"},"PeriodicalIF":0.0,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4441/17/2/161/pdf?version=1736418132","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147906567","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":"Comprehensive Assessment of Per- and Polyfluoroalkyl Substances (PFAS) Pollution in a Coastal Region: Contributions from Nearshore and Offshore Sources","authors":"Chen-Yu Chen, Ying Wang, Fei Chen, X. Wang, Qiao Zhang, Jialong Sun, Si Li, Qiang Chen, Fangze Shang, Hui Zhang","doi":"10.3390/w17020149","DOIUrl":"https://doi.org/10.3390/w17020149","url":null,"abstract":"Per- and polyfluoroalkyl substances (PFAS) have become a well-known class of anthropogenic pollutants in coastal regions. It is known that PFAS primarily enter the sea from nearshore sources, dry deposition, and wet deposition. However, the contribution of offshore sources to PFAS pollution in the sea remains poorly understood. Our study aims to investigate the occurrence of 74 PFAS across 15 groups in a coastal region of eastern China and to characterize their spatial distribution by focusing on the critical roles of both nearshore and offshore sources. Results revealed that 26 PFAS were detected in the coastal region (i.e., Ou River and Wenzhou Bay), with detection frequencies ranging from 4.3% to 100.0%. Notably, over 10 PFAS were detected for the first time in the region, such as perfluorooctane sulfonamide (FOSA), hexafluoropropylene oxide dimer acid (HFPO-DA), and 6:2 fluorotelomer sulfonic acid (6:2 FTSA), among others. The concentrations of detected PFAS ranged from 0.0018 to 76.31 ng/L, with perfluorooctanoic acid (PFOA) as the dominant congener. Spatial analysis indicated that the nearshore area was more severely polluted compared to the offshore area, with specific hotspots identified near industrialized areas. However, the distribution of certain PFAS, such as perfluorobutane sulfonic acid (PFBS) and perfluoro-3,6-dioxaheptanoic acid (PFDHA), exhibited a contrasting pattern, with higher concentrations observed in the offshore area and near island perimeters. These findings suggest that PFAS pollution in Wenzhou Bay originates from both nearshore and offshore sources, highlighting a complex interplay between nearshore and island-related activities.","PeriodicalId":23623,"journal":{"name":"Water SA","volume":"17 2","pages":"149-149"},"PeriodicalIF":0.0,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4441/17/2/149/pdf?version=1736330385","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147913037","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 Sodium Hypochlorite Disinfection on Polyvinylidene Fluoride Membranes in Microplastic Ultrafiltration","authors":"Guanghua Wang, Tongyu Li, Wenxuan Yin, Jianhua Zhou, Dongwei Lu","doi":"10.3390/w17010099","DOIUrl":"https://doi.org/10.3390/w17010099","url":null,"abstract":"With the widespread use of plastic products, microplastic (MP) pollution has become an important factor threatening the water environment and human health. Ultrafiltration (UF) technology, based on organic polymer membranes, is a common method to remove MPs in water treatment processes, offering high removal efficiency and scalability. However, in water treatment plants (WTPs), oxidation pretreatment is often applied before UF, and the presence of oxidants can affect membrane performance. In this study, we constructed a polyvinylidene fluoride (PVDF) ultrafiltration membrane for a gravity filtration system to investigate the impact of sodium hypochlorite oxidation pretreatment on the removal of polystyrene (PS) MPs under gravity filtration. As a result, pre-chlorination reduced PS microplastic deposition on membranes by improving flux stability (15.1%) but significantly decreased the removal rate (from 36.6% to 22.6%). Pre-oxidation facilitated a shift in fouling behavior toward intermediate blocking while reducing standard blocking and enhancing irreversible fouling recovery. However, continuous chlorine exposure increased membrane porosity and pore size, substituted fluorine with chlorine, and led to organic carbon leaching, indicating pre-oxidation jeopardizes membrane stability and separation performance. These findings provide insights into the development of novel strategies aimed at enhancing the efficiency and sustainability of membrane treatment processes in WTPs.","PeriodicalId":23623,"journal":{"name":"Water SA","volume":"17 1","pages":"99-99"},"PeriodicalIF":0.0,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4441/17/1/99/pdf?version=1735800015","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147330683","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":"Kinetics Modeling for Degradation of Geosmin and 2-Methylisoborneol by Photo-Electrogenerated Radicals","authors":"Luowei Pei, Shuo Wang, Ye Tian, Xinyi Zhu, Zhangying Ye, Xiaoling Huang","doi":"10.3390/w17010057","DOIUrl":"https://doi.org/10.3390/w17010057","url":null,"abstract":"With increasingly severe cyanobacterial blooms, the overflow of off-flavor compounds represented by geosmin (GSM) and 2-methylisoborneol (2-MIB) is becoming a global water quality issue. The UV photo-electrochemical process is considered an environmentally friendly technology for GSM and 2-MIB degradation. In this study, a kinetics model using the pseudo-first-rate constants for the elimination of GSM and 2-MIB was developed in the UV photo-electrochemical process. The model can be applied successfully to predict the degradation of GSM and 2-MIB under different electrolyte concentrations, initial pH values of the solutions, and current densities. The GSM and 2-MIB degradation rates improved with increases in the electrolyte concentration. With an increase in the pH value from 5 to 11, the rate constants for the degradation of GSM and 2-MIB were reduced by 52.9% and 69.5%, respectively. The degradation of GSM and 2-MIB showed positive correlations with the current density in the kinetic model. Furthermore, the significant roles of HO• and Cl• were evaluated by scavenging experiments and kinetics modeling. HO• was the dominant radical for GSM degradation, and Cl• played a crucial role in 2-MIB elimination. The results demonstrate that the UV photo-electrochemical process could be an efficient way for the mineralization of off-flavor compounds.","PeriodicalId":23623,"journal":{"name":"Water SA","volume":"17 1","pages":"57-57"},"PeriodicalIF":0.0,"publicationDate":"2024-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4441/17/1/57/pdf?version=1735377621","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147900958","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}