Journal of Environmental Sciences-china最新文献

{"title":"Enhanced remediation of soil contaminated with selected non-steroidal anti-inflammatory drugs by the bioaugmentation with newly isolated strain Serratia marcescens MC-2/23","authors":"Magdalena Klim ,&nbsp;Agnieszka Żmijowska ,&nbsp;Mariusz Cycoń","doi":"10.1016/j.jes.2025.04.009","DOIUrl":"10.1016/j.jes.2025.04.009","url":null,"abstract":"<div><div>Excessive use of non-steroidal anti-inflammatory drugs (NSAIDs) has resulted in environmental pollution, including soil contamination. Hence, various methods are required to remove these pollutants. One such approach is bioaugmentation, which involves introducing microorganisms capable of degrading organic contaminants into different environmental matrices. The novelty of this work relates to the isolation of a new bacterial strain <em>Serratia marcescens</em> MC-2/23, from raw sewage, capable of degrading the most commonly used NSAIDs, i.e. ibuprofen, diclofenac, and naproxen. Moreover, this is the first study wherein bioaugmentation with bacteria has been used for the degradation of NSAIDs in soil. Experiments using a mineral medium supplemented with individual drugs revealed that the MC-2/23 strain utilizes these compounds as carbon and energy sources. The highest degradation rates were observed for ibuprofen and naproxen, with DT50 values of 3.5 and 3.0 days, respectively. Additionally, introducing the MC-2/23 strain into sterile soil confirmed its ability to degrade these drugs. When applied to soil contaminated with the target NSAIDs, the MC-2/23 strain reduced the DT50 values of ibuprofen, diclofenac, and naproxen by 13-, 3.1-, and 4-fold, respectively, compared to the soil with natural microflora. These findings suggest that this strain could be effective for the bioremediation of NSAID-contaminated soils. However, the molecular and biochemical aspects of NSAID degradation need to be investigated in depth to elucidate the underlying pathways and accurately assess the survival and competitiveness of the MC-2/23 strain with native microflora to understand its interaction with the soil environment before it can be used in large-scale bioremediation.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"160 ","pages":"Pages 231-240"},"PeriodicalIF":6.3,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Niche vs habitat: Insights of aging microplastics and wetland types on bacterial community assembly","authors":"Yansong Shi ,&nbsp;Longrui Liang ,&nbsp;Liang Meng ,&nbsp;Jingwen Hou","doi":"10.1016/j.jes.2025.04.010","DOIUrl":"10.1016/j.jes.2025.04.010","url":null,"abstract":"<div><div>Microorganisms can colonize the surface of microplastics (MPs) to form a distinctive microbiome, known as a “plastisphere” which is regarded as an anthropogenic niche for microbial growth. However, bacterial community assembly in virgin and aging MP plastispheres across different habitats is poorly understood. This study aims to assess the variations in bacterial community assembly across different niches and habitats with an in situ experiment, in which constructed forest wetland (FW), natural lake wetland (LW), and lotus pond wetland (LP) were habitats, and plastispheres of virgin and aging low-density polyethylene (LDPE) MPs, as well as surrounding wetland soils were niches. Significant niche-related differences in bacterial communities were observed, with lower diversity and enrichment of potential plastic-degrading bacteria in the plastisphere than in the soil bacterial communities. Furthermore, habitat-related differences exerted a more pronounced influence on the beta-diversity patterns of the bacterial communities. The linear regression analyses indicated that the local species pool contributed more to bacterial community assembly in the LW wetland, whereas the relative abundance of species was the primary factor in the LP wetland. The null model analysis indicated that plastisphere bacterial communities were predominantly driven by the stochastic process, with a more deterministic assembly observed in the LP wetland and soil bacterial communities. Additionally, the primary ecological process shaping plastisphere communities shifted from drift in the virgin LDPE to homogenising dispersal in the aging LDPE. This study provides new insights into the fate and ecological impacts of MPs in wetlands, thereby facilitating the effective regulations of plastic pollution.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"159 ","pages":"Pages 221-232"},"PeriodicalIF":6.3,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144771628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Algae penetration and taste and odor compounds production in drinking water treatment plants: seasonal variations and risk assessment","authors":"Ya Cheng,&nbsp;Caiyun Ma,&nbsp;Gang Wen,&nbsp;Chaoyang Zheng,&nbsp;Wenle Tian,&nbsp;Kailin Sha,&nbsp;Xinru Han,&nbsp;Tinglin Huang","doi":"10.1016/j.jes.2025.04.002","DOIUrl":"10.1016/j.jes.2025.04.002","url":null,"abstract":"<div><div>In the conventional water treatment process, algae have a propensity to breach the filter barriers and potentially seep into the water distribution system, leading to an elevation in taste and odor compounds (T&amp;O compounds). This investigation delved into the seasonal fluctuations of algae penetration and the production of T&amp;O compounds within the treatment units of Reservoir Water Plant 1 (W1) and River Water Plant 2 (W2). The findings indicated that despite the application of the ‘pre-oxidation, coagulation and sedimentation (PCS), sand filtration, and disinfection’ process, certain robust-walled filamentous Cyanobacteria, Bacillariophyta species, and small Chlorophyta genera managed to bypass the filters. The leakage of algal cells during autumn at W1 was particularly striking, with a peak of 1,170,000 cells/L. The concurrent assessment of the potential for T&amp;O compound formation revealed an alarming high potential for 2-methylisoborneol (2-MIB) in the water leaving the plants, with concentrations soaring to 197.20 ng/L at W1 in autumn and 54.78 ng/L at W2 in summer. This underscores the significant capacity of residual algal cells to generate T&amp;O compounds. Tracking the retention and penetration dynamics of algal cells across each drinking water treatment stage is crucial for surface water treatment facilities to develop effective operational and management strategies, thereby enhancing the safety and quality of drinking water for the end consumer.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"160 ","pages":"Pages 319-329"},"PeriodicalIF":6.3,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Hydrochemical characteristics, evolution, and controlling factors of a karstic river with reservoirs: Insights from spatial-temporal analysis","authors":"Jiang Wu ,&nbsp;Ting Wang ,&nbsp;Tang Liu ,&nbsp;Jia-Ju Liu ,&nbsp;Nan Xu ,&nbsp;Hui Zeng ,&nbsp;Ling-Yan He","doi":"10.1016/j.jes.2025.04.005","DOIUrl":"10.1016/j.jes.2025.04.005","url":null,"abstract":"<div><div>Understanding water chemistry in karst regions is crucial for improving global water resource management and deepening our knowledge of the biogeochemical cycles shaping these sensitive environments. Despite advancements in karst hydrology, significant gaps remain in long-term trends, underlying processes, and quantitative effects of environmental changes. This is especially true in areas like the Wujiang River (WJ) in China, where human activities such as reservoir construction and land use/cover changes have accelerated hydrochemical changes. We combined recent and historical monitoring data to provide a detailed analysis of the spatial and temporal characteristics, evolution, and controlling factors of major ions in WJ. These findings are important for local water management and contribute to global efforts to manage similar karst systems facing human-induced pressures. Our research shows clear seasonal differences in solute concentrations, with higher levels during the dry season. WJ's water is rich in calcium, with Ca-HCO₃ ion pairs being the most common. Reservoir monitoring stations show much higher levels of NO₃⁻ and SO₄²⁻ compared to river-type stations, likely due to longer hydraulic retention time and increased acid deposition. The study confirms the significant role of pH and water temperature in rock weathering processes. Land use/cover changes were identified as the primary drivers of solute variations (46.37 %), followed by lithology (13.92 %) and temperature (8.35 %). Over the past two decades, intense carbonate weathering has been observed, especially during wet seasons. Among karstic provinces, Guizhou Province stands out with the highest ion concentrations, indicative of its extensive karst coverage and heightened weathering processes.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"159 ","pages":"Pages 108-119"},"PeriodicalIF":6.3,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144724283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Submerged aquatic plants affect the priming effect of dissolved organic carbon degradation in shallow lakes","authors":"Xiaokang Tian ,&nbsp;Xi Huang ,&nbsp;Y. Jun Xu ,&nbsp;Menglin Liu ,&nbsp;Zhengtong Li ,&nbsp;Xinyu Gao ,&nbsp;Huaiwei Sun ,&nbsp;Yang Wang ,&nbsp;Danni Yuan ,&nbsp;Siyue Li","doi":"10.1016/j.jes.2025.04.003","DOIUrl":"10.1016/j.jes.2025.04.003","url":null,"abstract":"<div><div>Aquatic plants have been widely used for lake ecological restoration. The effect of aquatic plants on lake biogeochemical cycling has been investigated intensively, however, plants’ effect on biodegradation of dissolved organic carbon (DOC) is rarely studied. Here we designed an indoor incubation experiment to explore the priming effect (PE) of aquatic plant leaching solution on DOC in shallow lakes, referring to as the input of active dissolved organic matter (DOM) that would arouse changes in the degradation rate of original refractory DOM. Waters from 20 urban lakes of different tropic states were incubated to study their PE on DOC by adding leaching solutions from two submerged freshwater plants, <em>Hydrilla</em> (H) and <em>Vallisneria</em> (V). The study showed a clear influence of aquatic plants on PE with varying directions and intensities. The H incubation group showed a PE range of -6.19 %–9.79 %, with an average of 2.15 % ± 2.70 %, whereas the V incubation group exhibited a PE range of -10.03 % to 3.60 %, with an average of -0.65 % ± 3.11 %. The positive and negative PEs by the two plant species indicate a key role of plants over trophic states on organic carbon dynamics in freshwater lakes. From the perspective of plant leaching input, our results reveal that planting aquatic plants whose leaching solution can reduce PE like V could be used to enhance carbon storage and constrain carbon emission.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"160 ","pages":"Pages 336-343"},"PeriodicalIF":6.3,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Coffee grounds-derived core-shell aerogels: Preparation and application for diesel pollutant degradation in water","authors":"Lihua Chen,&nbsp;Bin Zhang,&nbsp;Yang Jin,&nbsp;Yanyu He,&nbsp;Yuhan Zhang,&nbsp;Wenyu Zheng,&nbsp;Shaopeng Chen","doi":"10.1016/j.jes.2025.04.004","DOIUrl":"10.1016/j.jes.2025.04.004","url":null,"abstract":"<div><div>The effective and environmentally friendly management of oily wastewater, alongside the beneficial conversion of waste biomass, holds paramount importance for environmental conservation, public health, and sustainable societal progress. In this research, an innovative biomass core-shell bioreactor (CGC@SiO₂ aerogel) with selective adsorption and degradation properties was developed. The reactor's core is composed of coffee cellulose aerogel, offering a porous framework conducive to microbial colonization while safeguarding microorganisms from adverse external factors. The shell integrates hydrophobic silica enriched with polydimethylsiloxane, which alters the material's hydrophilic properties, enabling it to remain afloat on water for up to 100 days. This superhydrophobic layer maintained a contact angle of 150° even after ten consecutive rubbings. Experimental results indicate that the material performs exceptionally well in oil-water separation, as demonstrated by its success in 9 consecutive oil-water separations. It achieved 99 % selective adsorption, 91 % removal, and 46.2 % degradation of a 3 wt.% diesel solution under conditions of 37 °C, 120 r/min, and pH = 7. Additionally, tests assessing environmental tolerance revealed the material's robust adaptability and stability across varying pH levels and temperatures. Compared to traditional hydrophobic and lipophilic materials or free-floating microorganisms, CGC@SiO₂ aerogel not only efficiently captures oil pollutants but also degrades them into non-hazardous substances. Combining biodegradation with selective adsorption has shown to be an effective approach for treating oily wastewater, offering significant practical application potential. The low-carbon production of CGC@SiO₂ aerogel aligns with circular economy principles, underscoring its role in sustainable development.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"160 ","pages":"Pages 264-273"},"PeriodicalIF":6.3,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Distribution, assessment, and sources of nutrients in river water in the headwaters of the Shule River Basin, Northeastern Qinghai-Tibet Plateau","authors":"Qin Yang ,&nbsp;Donghui Shangguan ,&nbsp;Tianding Han ,&nbsp;Da Li ,&nbsp;Asim Qayyum Butt","doi":"10.1016/j.jes.2025.04.008","DOIUrl":"10.1016/j.jes.2025.04.008","url":null,"abstract":"<div><div>Nitrogen (N) and phosphorus (P) are essential nutrients and can significantly impact primary productivity of the ecosystem causing water environmental problems. However, their cycling mechanisms are not well understood in alpine mountains with climate change. Hence, 94 samples of river water were collected from 2018 to 2020 in the headwaters of the Shule River Basin to assess the nutrients spatiotemporal distribution and combined approach of water quality index to assess water quality and potential sources. The findings depict that high nutrient concentrations were found to coincide with snowmelt and glacial meltwater and rainfall recharge periods, while total flux peaked from June to September due to increased runoff. Notably, total nitrogen (TN) concentrations were significantly higher near the town, primarily attributed to the replenishment of nitrate (NO₃^‒-N) from livestock manure. The high total P (TP) was near the glacier, which was attributed to the transportation of glacial sediments into the river, and pH was another critical factor. N was the primary nutrient limiting factor for the growth of phytoplankton in river water. Although the migration and transport of nutrients have altered with climate change, river water quality is good in alpine mountains based on an overall evaluation. These findings contribute to enriching nutrient datasets and highlight the importance of water resource management and water quality assessment in sensitive and fragile alpine mountains.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"159 ","pages":"Pages 502-511"},"PeriodicalIF":6.3,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144829025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Investigation of natural and anthropogenic effects on aerosols optical properties over the Western Pacific ocean by the research vessel KEXUE","authors":"Jinyuan Xin ,&nbsp;Yining Ma ,&nbsp;Xiangguang Zhang ,&nbsp;Yongjing Ma ,&nbsp;Xiaoyan Wu ,&nbsp;Fangkun Wu ,&nbsp;Quan Liu ,&nbsp;Yilong Lyu ,&nbsp;Jiawei Jiang","doi":"10.1016/j.jes.2025.04.001","DOIUrl":"10.1016/j.jes.2025.04.001","url":null,"abstract":"<div><div>In winter 2018, an aerosol physicochemical experiment was conducted in the Western Pacific Ocean (WPO) aboard the Research Vessel KEXUE of Chinese Academy of Sciences. This study systematically investigated both natural and anthropogenic effects on marine aerosols optical properties, as well as the applicability of multi-satellite products and IMPROVE equation. The averaged aerosol optical depth (AOD_{500 nm}) was 0.31 ± 0.16 and Ångström exponent_{440–675 nm} was 0.29 ± 0.30. In offshore China, significant anthropogenic emissions affected the marine environment. In remote WPO, dust aerosols transported from northern China, Siberia, Central Asia, and those settling from the upper troposphere originating from north Africa, Arabian peninsula, and western India, were dominant. The spatial trends of AOD were opposite in the mid-latitude and southern seas of WPO. The highest AOD, 0.32 ± 0.23, appeared along the coast of South Asia at mid-latitude, decreasing from offshore seas to remote oceans. In low-latitude and equatorial seas, AOD significantly increased from coast to remote oceans. Ångström exponent dropped significantly from the coast to remote oceans as anthropogenic influence diminished across the entire WPO. Correlation analysis showed that both MODIS-C6 and Himawari AOD products showed similar applicability in coastal urban areas, while Himawari AOD is highly recommended for coastal background and marine environment due to its finer resolution. The extinction coefficient derived from PM_2.5 chemical compositions using IMPROVE algorithm exhibited a significant correlation (<em>R</em>² = 0.58) with the concurrently measured AOD in the absence of long-distance transport, suggesting that the IMPROVE is a reasonable proxy of the columnar average of marine aerosol extinctions free from transport influences.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"159 ","pages":"Pages 596-605"},"PeriodicalIF":6.3,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144830784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Dynamics of cadmium and arsenic in the soil-rice system: Insights from different forms manganese fertilizer application","authors":"Tianyi Yan ,&nbsp;Quan Zhang ,&nbsp;Haifei Chen ,&nbsp;Jingheng Zhou ,&nbsp;Qiren Wen ,&nbsp;Bo Li ,&nbsp;Qihong Zhu ,&nbsp;Daoyou Huang ,&nbsp;Chao Xu ,&nbsp;Hanhua Zhu","doi":"10.1016/j.jes.2025.03.056","DOIUrl":"10.1016/j.jes.2025.03.056","url":null,"abstract":"<div><div>Manganese (Mn) is widely used to control cadmium (Cd) and arsenic (As) uptake by rice, but the effects of different Mn forms and concentrations on Cd/As movement in the soil-rice system are unclear. The study investigated the mechanisms by which three Mn compounds affected the accumulation of Cd/As in rice under different application rates. MnO₂, MnSO₄, and MnCO₃ treatments significantly reduced grains Cd levels by 27.6 %, 30.2 %, and 28.1 %, respectively, while As levels were less consistently affected. Three forms of Mn fertilizers enhanced the conversion of exchangeable to carbonate bound-Cd, which closely related to the increase of soil pH. MnO₂ and MnCO₃ reduced Cd translocation by increasing Cd/As adsorption on iron plaques, and MnSO₄ and MnCO₃ decreased Cd translocation by boosting root SOD and Cys levels. Transcriptome analysis revealed that Mn²⁺ upregulated genes involved in the antioxidant defense system, limited Cd transport by enhancing OsABCC1 and OsHMA3 expression, and promoted As translocation by increasing OsLsi2 expression. Overall, different forms of Mn fertilizers effectively reduced Cd toxicity by fixing Cd in soil carbonate and iron plaques, and restricting Cd transport. Although Mn fertilizers reduced As availability in soil and affected As absorption in rice, they have certain limitations and need to be further explored. These findings reveal the mechanism by which different forms of Mn regulate the fixation and migration behavior of Cd and As, providing new ideas and theoretical basis for reducing the environmental risk of Cd and As.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"160 ","pages":"Pages 253-263"},"PeriodicalIF":6.3,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Visible light photocatalytic enhanced heterogeneous cobalt catalyzed peroxymonosulfate synergistic process to degradation atrazine: Efficiency, influencing factors, by-products removal and mechanism","authors":"Qingkong Chen ,&nbsp;Jieyu Xia ,&nbsp;Fengjun Liu ,&nbsp;Jianping Fan ,&nbsp;Peng Yan ,&nbsp;Mika Sillanpää","doi":"10.1016/j.jes.2025.03.058","DOIUrl":"10.1016/j.jes.2025.03.058","url":null,"abstract":"<div><div>This study developed a novel heterogeneous Vis-Photo+Fenton-like system by integrating visible-light-responsive Co₃O₄/TiO₂ photocatalysis with peroxymonosulfate (PMS) activation for efficient atrazine (ATZ) degradation. The synergistic process achieved complete ATZ removal within 60 min under near-neutral pH (6.9), outperforming individual Fenton-like (39 %) and photocatalytic (24 %) processes. Key factors influencing the degradation efficiency included light sources (UV &gt; visible), pH (optimal at 6.9), catalyst dosage (0.01 g Co₃O₄/TiO₂), and PMS:ATZ molar ratio (1:2). The system exhibited a synergistic coefficient of 5.03 (degradation) and 1.97 (mineralization), attributed to enhanced radical generation and accelerated Co³⁺/Co²⁺ redox cycling through photoinduced electron transfer. Intermediate analysis revealed dealkylation, dechlorination, and oxidation pathways, with reduced toxicity of by-products (e.g., CEAT, CIAT) confirmed by ecotoxicity assessments. The mineralization efficiency (Vis-Photo+Fenton-like) reached 83.1 %, significantly higher than that of standalone processes (Fenton-like: 43.2 %; photocatalysis: 30.5 %). The catalyst demonstrated excellent stability (nearly 90 % recovery, &lt; 1 μg/L Co leaching) and practical applicability. This study provides an efficient, sludge-free, and solar-compatible strategy for eliminating persistent herbicides in water treatment.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"159 ","pages":"Pages 166-177"},"PeriodicalIF":6.3,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144750335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}