Environmental Technology最新文献

{"title":"Mechanistic insights into acetochlor degradation by the UV/sulphite process: a transition state calculation approach.","authors":"Ju-Xiang Chen, Jun-Jie Zhang, Shi-Jian Mao, Shang-Ye Yang, Yu-Qiong Gao, Nai-Yun Gao","doi":"10.1080/09593330.2026.2702877","DOIUrl":"10.1080/09593330.2026.2702877","url":null,"abstract":"<p><p>To mitigate the environmental risks posed by the herbicide acetochlor in aquatic ecosystems, this study systematically evaluated its degradation across three advanced UV-based reductive processes: UV/Na₂SO₃, UV/Na₂S, and UV/Na₂S₂O₄. Under 254 nm irradiation, the UV/sulphite (UV/Na₂SO₃) system demonstrated superior degradation efficiency, achieving optimal removal under neutral-to-weakly alkaline conditions (pH 7.0-10.0) with rates scaling proportionally to the initial sulphite concentration. Mechanistic investigations revealed that hydrated electrons (e_aq^-), sulphite radicals (SO₃^•^-), and hydrogen atoms (H^•) collectively drove the degradation, contributing 58.72%, 37.95%, and 3.33%, respectively. Matrix effect evaluations indicated that NO₃^-, NO₂^-, and HCO₃^- significantly inhibited the e_aq^--mediated reduction, whereas Cl^- and SO₄²^- exhibited negligible interference. Crucially, density functional theory (DFT) and transition state calculations were employed to elucidate the microscopic degradation pathways. These theoretical models confirmed that the initial electron-induced dechlorination at the C-Cl bond is a barrierless process. Furthermore, transition state analysis uncovered a water-assisted, stepwise hydrogen transfer and hydrolysis mechanism, wherein water clusters function as essential proton shuttles to facilitate C-N bond activation. By seamlessly integrating experimental kinetics with advanced computational modelling, this study delineates the precise degradation mechanisms of acetochlor, providing a robust theoretical foundation and technical framework for the application of UV/sulphite processes in water remediation.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"2820-2832"},"PeriodicalIF":2.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148548220","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 removal behaviour of unconventional pollutants by activated carbon injection in coal-fired flue gas.","authors":"Xiuwei Ma, Junjie Liu, Yao Luo","doi":"10.1080/09593330.2026.2696550","DOIUrl":"10.1080/09593330.2026.2696550","url":null,"abstract":"<p><p>Reducing emissions of unconventional pollutants (UPs: organic pollutants (OPs), gaseous mercury (GM), and condensable particulate matter (CPM)) from coal-fired flue gas is crucial for continuous improvement of atmospheric environmental quality. In this work, activated carbon injection (ACI) was first employed for UPs synergistic removal in a pilot-scale system. At the dust collector outlet, the UPs concentrations in flue gas followed the order: CPM (20.31 mg/m3) > OPs (1.90 mg/m3) > GM (8.11 μg/m³). For unmodified AC, removal efficiency of OPs and GM was related to SBET and Vt, while that was determined by pore size distribution for CPM. With nitric acid modification (AC1-A), the adsorption efficiencies for OPs, GM, and CPM reached 58.4%, 69.2%, and 53.6%, respectively. Among OPs, VOCs adsorption was weaker than that of SVOCs. The increased heteroatomic groups on AC1-A enhanced the hydrogen bonding formation and electron donor-acceptor interactions with oxygenated VOCs. GM was more readily captured near oxygen-containing groups, the surface chemistry had a greater influence than pore structure. For CPM, the inorganic fraction showed higher removal efficiency (61.2%) than that of organic fraction (49.1%). Although organics exhibited stronger affinity to ACs, their larger molecular weight and volume limited the diffusion rate, decreasing the adsorption efficiency. Functional groups showed weaker influence on organic fraction removal. Although competitive adsorption existed among various pollutants, their low total concentration still ensured good removal performance of UPs. Expanding pore size distribution and increasing heteroatomic groups on AC are effective strategies for UPs removal from coal-fired flue gas.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"2777-2790"},"PeriodicalIF":2.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148396426","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 Fe-Mn co-doped biochar for enhanced periodate activation: unveiling dual-radical and non-radical pathways in oxytetracycline degradation.","authors":"Qingbo Yang, Huanhuan Guo, Yiyuan Lu, Jiaxin Sun, Qianqian Zhong, Xiaohua Ren","doi":"10.1080/09593330.2026.2707423","DOIUrl":"https://doi.org/10.1080/09593330.2026.2707423","url":null,"abstract":"<p><p>The contamination of wastewater by antibiotics poses significant ecological risks. Here, a novel Fe-Mn co-doped nitrogen-doped biochar (Fe-Mn@NBC) was synthesized from corn straw via impregnation-chelation-pyrolysis to activate periodate (PI) for oxytetracycline (OTC) degradation. The Fe-Mn@NBC/PI system demonstrated outstanding degradation performance, achieving an OTC removal rate of 96.2% within 90 min, with a reaction constant of 0.237 min-1. The unit degradation efficiency of OTC for Fe-Mn@NBC/PI system was calculated to be 320.7 mg·(g·mmol)-1, outperforming many similar catalysts reported in the literature. This enhanced performance is attributed to the porous structure, large surface area, and abundant active sites of Fe-Mn@NBC, which optimize charge distribution and facilitate electron transfer. The system maintained good degradability and reusability under various hydraulic conditions (pH, inorganic anions, humic acid, actual water). Mechanistic studies revealed that 1O2, O2•-, and IO3• were the dominant reactive species. Using HPLC-MS and Fukui function analysis, electron-rich groups (-CONH2, -COOH) were identified as primary attack sites, leading to three proposed OTC degradation pathways, with key intermediates showing low toxicity via T.E.S.T. analysis. This study not only presents a sustainable approach for repurposing waste corn stalk biomass but also offers a cost-effective and eco-friendly solution to combat antibiotic pollution in wastewater.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":"47 20","pages":"2912-2927"},"PeriodicalIF":2.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148701189","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":"Rapid and complete inorganic nitrogen removal from real aquaculture wastewater via heterotrophic nitrification-aerobic denitrification by <i>Pseudomonas putida</i> 4-HYK.","authors":"Longqi Wang, Sitong Li, Xiaotong Wang, Weiyu Du, Shiyu Feng, Li Wang, Yuan Wang, Jing Gu, Yuting Cong, Yanan Lu, Lianshun Wang, Guojun Yang, Hua Wang","doi":"10.1080/09593330.2026.2708922","DOIUrl":"10.1080/09593330.2026.2708922","url":null,"abstract":"<p><p>The accumulation of inorganic nitrogen in intensive aquaculture systems necessitates treatment strategies that combine rapid conversion kinetics with operational robustness. In this study, <i>Pseudomonas putida</i> 4-HYK was isolated and systematically evaluated for inorganic nitrogen removal under both synthetic media and real aquaculture wastewater conditions. Batch experiments demonstrated complete removal of ammonium, nitrite, and nitrate (20 mg L^-1) within 15, 18, and 21 h, respectively, with maximum removal rates reaching 1.67, 1.33, and 1.04 mg L^-¹ h^-¹ and no detectable accumulation of intermediate nitrogen species. Under mixed-nitrogen conditions, the strain exhibited a consistent sequential utilisation pattern, preferentially assimilating ammonium prior to nitrite and nitrate reduction. Stable nitrogen removal was maintained across a broad operational window (C/N ratio 3-20, pH 7-9, and 25-35 °C), while measurable activity persisted at pH 4 and salinity up to 40‰, indicating strong environmental tolerance relevant to aquaculture settings. Dissolved oxygen availability was identified as a critical factor for achieving complete nitrogen removal. Process validation using real industrial aquaculture wastewater (NH₄⁺-N 8.36 mg L^-¹; NO₂^--N 5.12 mg L^-¹; NO₃^--N 2.85 mg L^-¹) showed that complete inorganic nitrogen removal could be achieved within 24 h at inoculation levels of 0.5-2% when brown sugar was applied as an economical external carbon source, supporting the technical feasibility of low-cost biological treatment. These results demonstrate that 4-HYK enables rapid and complete nitrogen removal with strong tolerance to variable environmental conditions, providing a practical biological option for nitrogen control in aquaculture wastewater treatment systems.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"2954-2968"},"PeriodicalIF":2.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148600444","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":"Effects of different pyrolysis conditions on chemical speciation transformation and immobilization of heavy metals in sludge.","authors":"Yuan Qu, Chao Luo, Shuai He, Yiqiong Zhang, Weihong Zhou","doi":"10.1080/09593330.2026.2708215","DOIUrl":"10.1080/09593330.2026.2708215","url":null,"abstract":"<p><p>With the acceleration of global industrialization, the environmental risks posed by heavy metals in sludge have become increasingly prominent. Traditional treatment methods struggle to effectively reduce the bioavailability of these metals, whereas pyrolysis facilitates the fixation and transformation of heavy metals via high-temperature conversion. This study investigated the migration and transformation of heavy metals during sludge pyrolysis, focusing on the influence of pyrolysis temperature and heating rate on the distribution and morphology of these metals. The results revealed that both the pyrolysis temperature and heating rate significantly affected the fixation efficiency, migration behavior, and chemical form of the heavy metals. Pyrolysis temperature and heating rate significantly affect heavy metal behavior. Optimal stabilization is achieved at 700 and 10 °C min^-1, which drastically reduces the potential ecological risk index (RI) from 156.97 to 9.83 and 10.80. These conditions facilitate metal migration into gas/liquid phases and convert active fractions (F1/F2) into the stable residual fraction (F4). The crystal structure and functional group changes of the pyrolysis products were further analyzed by X-ray diffraction and infrared spectroscopy. The results show that the higher pyrolysis temperature will weaken the characteristic peak intensity of SiO2. The faster heating rate will enhance the crystallization of graphite carbon and accelerate the dehydration/alkane decomposition reaction, which can be confirmed by the weakening of -OH and -CH stretching vibration intensity. This study provides a theoretical foundation for optimizing the sludge pyrolysis process and contributes to the realization of resource utilization in sludge treatment.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"2928-2940"},"PeriodicalIF":2.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148668508","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":"Hydraulic characteristics and enhanced nitrogen removal performance of a fold-flow iron-based bioretention pond.","authors":"Zizeng Lin, Wei Dai, Yuhao Ji","doi":"10.1080/09593330.2026.2692658","DOIUrl":"10.1080/09593330.2026.2692658","url":null,"abstract":"<p><p>Bioretention ponds often suffer from limited denitrification under variable stormwater conditions. To address this, a concave fold-flow board and sponge iron filler were introduced into a bioretention system. Three configurations - direct-flow sand-based (control), fold-flow sand-based, and fold-flow iron-based - were evaluated via tracer experiments, CFD simulation, long-term operation under different rainfall intensities, and 16S rRNA sequencing. The fold-flow structure significantly improved hydraulic performance. Under medium rainfall, the standardized variance of residence time distribution increased from 0.08-0.27 and hydraulic efficiency λ from 0.82-0.97, indicating a transition from near plug flow to mixed flow with better space utilization. The fold-flow board also created alternating aerobic-anaerobic zones favourable for nitrogen transformation. Under high rainfall, the fold-flow iron-based pond achieved removal rates of 81.66% for NH₄⁺-N, 94.11% for NO₃^--N, and 89.54% for TN. Compared with the fold-flow sand-based pond, removals increased by 1.72%, 18.55%, and 13.10%, respectively; relative to the direct-flow sand-based pond, increases were 4.99%, 40.77%, and 40.56%. Microbial analysis revealed higher relative abundances of Bacteroidota and Chryseolinea and a lower abundance of Patescibacteria in the iron-amended system, suggesting a microbial community more conducive to denitrification. Overall, the enhanced nitrogen removal is attributed to the synergistic coupling of hydraulic regulation, redox zonation, and microbial adaptation. Combining a simple fold-flow structure with low-cost sponge iron offers a promising strategy for designing or retrofitting stormwater bioretention systems.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"2698-2712"},"PeriodicalIF":2.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148351184","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":"Fouling of waste-based ceramic membranes in an anaerobic membrane bioreactor: effect of membrane type and sludge characteristics.","authors":"Sourbh Dhiman, Malini Balakrishnan, Naved Ahsan","doi":"10.1080/09593330.2026.2688596","DOIUrl":"10.1080/09593330.2026.2688596","url":null,"abstract":"<p><p>This study assessed fouling of waste sugarcane bagasse ash-based ceramic membranes (SBA-CMs) in a sequential batch reactor (SBR)-anaerobic membrane bioreactor (AnMBR) treating low-strength wastewater (total chemical oxygen demand, tCOD∼180 mg/L). The system was operated at a hydraulic retention time of 18 h and permeate flux of 14.9 L/m² h. Different SBA-CMs were screened, followed by testing the effect of varying mixed liquor suspended solids (MLSS) on filtration performance and long-term system performance using the optimal SBA-CM and MLSS concentration. Single-layer SBA-CM with no coating (pore size 8.6 μm, porosity 46%) displayed 50% lower filtration resistance (1.1 × 10¹² /m) compared to two-layer coated SBA-CMs. Higher MLSS (5 g/L) was associated with higher transmembrane pressure, and unstable flux; 2.5 g/L MLSS proved to be optimal. Stable flux was sustained over 64 days by applying fouling control measures, viz., filtration-relaxation, backflushing, and physical cleaning. FTIR, SEM, and particle size analysis of the membrane surface deposits identified extracellular polymeric substances, colloids, and micro-and macroparticles as key components of the fouling layer. The total filtration resistance indicated both surface deposition (50%, 1.7 × 10¹² /m) and pore blockage (40%, 1.4 × 10¹² /m) as key fouling mechanisms. Statistical analysis further indicated F/M ratio (ρ = -0.43) and MLSS (ρ = 0.38) showed relatively strong associations with fouling rate compared to EPS content and composition (ρ ≈ 0.19-0.33). Overall, this study demonstrates the optimal operation conditions and provides insights into the fouling behaviour of an SBA-CM-equipped AnMBR treating low-strength wastewater.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"2600-2614"},"PeriodicalIF":2.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148294023","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":"Comparative analysis of anaerobic sludge digestion in conventional and high-rate activated sludge systems.","authors":"Ali Tamer Cetinkaya, Goksin Ozyildiz, Nergis Dilsizoglu Akyol, Emine Cokgor, Güçlü Insel","doi":"10.1080/09593330.2026.2694731","DOIUrl":"10.1080/09593330.2026.2694731","url":null,"abstract":"<p><p>Anaerobic sludge digestion is widely applied in municipal wastewater treatment plants for sludge stabilisation and renewable energy recovery through biogas production. However, digestion performance is governed by upstream biological treatment configuration, which determines sludge origin and biodegradability. This study presents a comparative assessment based on experimentally generated from a full-scale high-rate activated sludge (HRAS) system and literature-based datasets for conventional activated sludge (CAS) systems. Long-term anaerobic batch digestion tests were conducted under mesophilic conditions using plant-representative mixed sludge prepared from primary and secondary sludges collected from HRAS treatment line of a full-scale municipal wastewater treatment plant in Türkiye. Methane production and solids reduction were evaluated. The experimental results were further interpreted using plant-wide modelling implemented in the SUMO simulation platform. Methane yields normalised to volatile solids fed varied substantially with sludge origin and sludge age. The HRAS plant operated at the lowest sludge age exhibited the highest methane yield (530 L CH₄/kg VS_fed), whereas literature reported CAS systems yielded between 193 and 375 L CH₄/kg VS_fed. When normalised to treated wastewater, biogas production from CAS systems in Türkiye was significantly lower than that from HRAS configurations and reported CAS systems in Europe and North America, reflecting differences in carbon capture and upstream processes. Good agreement between experimental observations and plant-wide modelling confirms that anaerobic digestion performance cannot be optimised independently of upstream treatment design. Overall, the results highlight the importance of high-rate carbon capture strategies and unit wastewater-based performance indicators for improving plant-wide energy recovery in wastewater treatment systems.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"2750-2761"},"PeriodicalIF":2.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148535788","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":"Combined removal of ammonia-nitrogen from wastewater by ultrasonic cavitation and electrochemical oxidation.","authors":"Fengbin Liu, Xiumin Ma, Pengde He, Xingfan Chang, Weiwei Cui, Xudong Yan","doi":"10.1080/09593330.2026.2689003","DOIUrl":"10.1080/09593330.2026.2689003","url":null,"abstract":"<p><p>This study systematically explored the purification performance of high-strength ammonia nitrogen(NH3-N) removal wastewater using three processes: ultrasonic cavitation (Process One), electrochemical oxidation (Process Two), and their coupling (Process Three). NH3-N removal rates were determined via ultraviolet spectrophotometry under different parameters. Furthermore, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and laser scanning confocal microscopy (LSCM) characterized the surface morphology and composition of ruthenium-iridium coated titanium electrodes before and after combined treatment. For 1200 mg·L-1 NH3-N removal wastewater, the standalone ultrasonic experiment (40 kHz, 150 W, aeration) showed that the removal rate increased sharply as pH rose from 6.5 to 12.5, owing to pH-dependent NH3-N speciation. The optimal parameters for standalone electrochemical oxidation were 1300 mg·L-1 chloride ions, a current density of 133 mA·cm-2, and pH 10.5, verifying the key roles of high current density and suitable pH. Under these optimized conditions, the coupled process achieved a 96.88% NH3-N removal rate in just 30 min, significantly outperforming single technologies.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"2628-2646"},"PeriodicalIF":2.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148276532","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":"Enhanced nitrogen and phosphorus removal from mining-affected waters by micro-nano aeration coupled with microbial remediation.","authors":"Kaixin Liu, Guoliang Chen, Zhihui Qu, Pengfei Wang, Zhigang Li, Yihong Chen","doi":"10.1080/09593330.2026.2695940","DOIUrl":"10.1080/09593330.2026.2695940","url":null,"abstract":"<p><p>Nitrogen and phosphorus enrichment in mining-affected waters can cause oxygen depletion, eutrophication, and deterioration of aquatic ecosystems. In this study, a combined micro-nano aeration and microbial remediation strategy was developed for nutrient removal from mining-affected water. Field investigation showed that the mining water was black and odorous, with low dissolved oxygen and elevated nitrogen and phosphorus concentrations. Simulated mining-affected wastewater was therefore prepared according to the measured field-water characteristics to ensure experimental reproducibility. The effects of aeration duration, aeration pressure, microbial activation method, inoculation dosage, and initial pH on nutrient removal were systematically evaluated. The optimal operating conditions were identified as micro-nano aeration at 0.25 MPa for 3 h, microbial inoculation at 15 mL/L, and an initial pH of 7. Under these conditions, the combined micro-nano aeration-microbial system achieved removal efficiencies of 76.70% for NH₃-N, 75.84% for TN, and 73.64% for TP within 3 days, outperforming the single aeration and microbial treatments. The enhanced performance was mainly associated with improved oxygen availability and possible microbial nutrient transformation under micro-nano aeration conditions, although the detailed nitrogen and phosphorus transformation pathways require further verification. These results suggest that micro-nano aeration can alleviate oxygen limitation and strengthen microbial remediation of nutrient-polluted mining waters, providing a potential low-impact approach for ecological restoration in mining areas.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"2762-2776"},"PeriodicalIF":2.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148351195","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}