Environmental Technology最新文献

Acid mine drainage treatment using pervious concrete and evaluation of chemical clogging impacts - column experiment. 透水混凝土处理酸性矿井污水及化学堵塞影响评价——柱试验。

IF 2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-10-06 DOI: 10.1080/09593330.2025.2566425

Stephen O Ekolu, Fitsum Solomon, Londi Kubheka

{"title":"Acid mine drainage treatment using pervious concrete and evaluation of chemical clogging impacts - column experiment.","authors":"Stephen O Ekolu, Fitsum Solomon, Londi Kubheka","doi":"10.1080/09593330.2025.2566425","DOIUrl":"https://doi.org/10.1080/09593330.2025.2566425","url":null,"abstract":"An investigation was conducted to evaluate hydraulic performance and chemical clogging of the concrete permeable reactive barrier (PRB) used to treat acid mine drainage (AMD). The pervious concrete PRB system is an emerging technology for AMD treatment. In the present study, pervious concrete mixtures were prepared at a 0.27 water/cementitious ratio using CEM I 52.5R cement with or without 30% fly ash and 9.5 mm granite aggregate. The AMD types used were obtained from a gold mine and from a coal mine. Porosity and permeability properties of the pervious concretes were measured before and after use to treat AMD. Subsequently, 2D slice image analyses were done using X-ray microcomputed tomography (microCT). It was found that the heavy metals comprising Al, Zn, Fe, Mn, Mg, Ni and Co, were removed at the high removal efficiency (RE) levels of 70-100%. Interestingly, critical reductions in porosity (P-crit) and permeability (K-crit) values were utmost at a short distance of 75 mm from the entrance, forming bottleneck clogging. Results showed that chemical clogging that ensued progressively during the experiment, adversely gave values of up to 30-40% reduction in RE values, up to 30-40% reduction in P-crit and 80-90% reduction in K-crit. MicroCT analysis of pore connectivity confirmed the occurrence of bottleneck clogging in the column reactors. Further studies are needed to investigate the long-term adverse impacts of chemical clogging that could potentially be employed to determine the PRB's longevity.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-12"},"PeriodicalIF":2.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145238262","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}

引用次数: 0

Overview of the microbiome and resistome of swine manure in commercial piglet farms and its application in grazing soils. 商品猪场猪粪微生物组和抗性组及其在放牧土壤中的应用综述。

IF 2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-10-06 DOI: 10.1080/09593330.2025.2566429

Maria Eduarda Dias, Gabriela Merker Breyer, Mariana Costa Torres, Camila Rosana Wuaden, Raquel Rebelatto, Jalusa Deon Kich, Marcio Dorn, Franciele Maboni Siqueira

{"title":"Overview of the microbiome and resistome of swine manure in commercial piglet farms and its application in grazing soils.","authors":"Maria Eduarda Dias, Gabriela Merker Breyer, Mariana Costa Torres, Camila Rosana Wuaden, Raquel Rebelatto, Jalusa Deon Kich, Marcio Dorn, Franciele Maboni Siqueira","doi":"10.1080/09593330.2025.2566429","DOIUrl":"https://doi.org/10.1080/09593330.2025.2566429","url":null,"abstract":"The environmental spread of antimicrobial resistance genes (ARGs) through the use of animal manure in agriculture has become a significant concern. This study investigated the impact of applying swine manure treated through biodigestion on the spread of ARGs in agricultural soils in the Midwest region of Brazil. Samples of untreated and treated manure, fertilized soil, and unfertilized soil were collected from three piglet production units. Bacterial communities and ARGs were characterized through metagenomic sequencing and bioinformatics. Bacterial profiles in fertilized and unfertilized soils were highly similar across all farms. In contrast, biodigestion reduced the total number of ARGs in treated manure. Of the 399 ARGs detected in fertilized soils, 67% were also found in unfertilized soils, and 12% were shared exclusively with treated manure. The presence of numerous ARGs in unfertilized soils highlights the role of environmental dissemination routes, such as runoff, dust, or wildlife, in shaping soil resistomes even in areas without manure application. These findings suggest a stable bacterial and resistome profile in soils, regardless of manure application. Although antimicrobial residues were not evaluated, the results reinforce the need for responsible antibiotic use and effective manure management to minimize environmental ARG dissemination.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-11"},"PeriodicalIF":2.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145238310","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}

引用次数: 0

AI-Optimised aeration control in SBR systems: an inverse SVM framework toward carbon-neutral wastewater treatment. 人工智能优化曝气控制在SBR系统：对碳中性废水处理的逆支持向量机框架。

IF 2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-10-04 DOI: 10.1080/09593330.2025.2562373

Qiu Cheng, Zhou Yang, Yang Guodong, Li Ya, Luo Le, Wang Xiuying, Wu Juzhen, Wang Mingxi, Li Qianglin

{"title":"AI-Optimised aeration control in SBR systems: an inverse SVM framework toward carbon-neutral wastewater treatment.","authors":"Qiu Cheng, Zhou Yang, Yang Guodong, Li Ya, Luo Le, Wang Xiuying, Wu Juzhen, Wang Mingxi, Li Qianglin","doi":"10.1080/09593330.2025.2562373","DOIUrl":"https://doi.org/10.1080/09593330.2025.2562373","url":null,"abstract":"This study proposes an inverse support vector machine (ISVM) framework to optimise aeration control in a sequencing batch reactor(SBR), addressing the balancing of energy efficiency and regulatory compliance in wastewater treatment. By integrating data-driven modelling with constrained optimisation, the method dynamically adjusts aeration rate to maintain effluent NH3-N concentrations below 5 mg/L while minimising energy consumption. A support vector machine (SVM) establishes input-output correlations between process parameters (influent NH3-N, ORP, conductivity, aeration rate) and effluent NH3-N concentration, enabling the ISVM to resolve constraint-driven aeration rate optimisation. Experimental validation across 20 operational cycles demonstrated a 20.3% reduction in energy usage compared to conventional fixed-rate aeration, achieving 95% compliance with discharge standards. The framework's penalty-based optimisation and gradient clipping mechanisms ensure stability in applications, overcoming limitations of traditional PID controllers and mechanistic models. This work advances intelligent control strategies for sustainable wastewater management, providing a constraint-aware optimisation template for environmental engineering systems.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-15"},"PeriodicalIF":2.0,"publicationDate":"2025-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145228593","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}

引用次数: 0

Enhancing o-cresol biodegradation in wastewater via T. obliquus/TiO₂ composite: construction and mechanistic insights. 斜斜t /TiO2复合材料增强废水中邻甲酚的生物降解：结构和机理研究。

IF 2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-10-02 DOI: 10.1080/09593330.2025.2566427

Daohong Zhang, Haiyan Yang, Jinxin Guo, Chaocan Li, Yufei Wang

{"title":"Enhancing o-cresol biodegradation in wastewater via T. obliquus/TiO2 composite: construction and mechanistic insights.","authors":"Daohong Zhang, Haiyan Yang, Jinxin Guo, Chaocan Li, Yufei Wang","doi":"10.1080/09593330.2025.2566427","DOIUrl":"https://doi.org/10.1080/09593330.2025.2566427","url":null,"abstract":"Microalgae are widely recognized for their eco-friendly and cost-effective contributions to water pollution mitigation. However, practical applications face efficiency and toxicity tolerance limitations. This study overcomes these hurdles by engineering a titanium dioxide-microalgae composite, T. obliquus/TiO2, specifically to enhance the degradation of phenolic compounds like o-cresol in wastewater treatment. The results demonstrate a significant improvement, with the o-cresol degradation rate using the composite being 1.79 times higher than that of T. obliquus alone. This enhancement is primarily attributed to the synergistic interplay between TiO2 nanoparticles (NPs) and microalgal metabolism, particularly photosynthesis. The TiO2 NPs interact with chloroplasts to reduce bandgap, decrease photoelectron-hole recombination, and improve light energy utilization. Electrochemical analyses, including cyclic voltammetry (CV) and Tafel tests, reveal enhanced extracellular electron transfer, while indicators of respiratory activity and cell energy levels, such as electron transport system activity (ETSA) and adenosine triphosphate (ATP), point to increased intracellular electron transfer. Additionally, the composite shows improved biomass and metabolic activity, as indicated by total chlorophyll content and nicotinamide adenine dinucleotide (NADH) levels, alongside reduced oxidative stress markers like malondialdehyde (MDA) and superoxide dismutase (SOD). These findings offer valuable insights into sustainable strategies for organic wastewater treatment and remediation.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-11"},"PeriodicalIF":2.0,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145212028","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}

引用次数: 0

Limitations of biochemical methane potential testing in forecasting farm-scale digester performance under psychrotrophic conditions. 生化甲烷电位测试在预测农场规模沼气池在精神营养条件下的性能方面的局限性。

IF 2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-10-02 DOI: 10.1080/09593330.2025.2567079

Glen Madrigal, Liz Quispe, Diyane Mango, Jaime Jaimes-Estévez, Oscar Mendieta, Liliana Castro-Molano, Humberto Escalante, Jaime Martí-Herrero

{"title":"Limitations of biochemical methane potential testing in forecasting farm-scale digester performance under psychrotrophic conditions.","authors":"Glen Madrigal, Liz Quispe, Diyane Mango, Jaime Jaimes-Estévez, Oscar Mendieta, Liliana Castro-Molano, Humberto Escalante, Jaime Martí-Herrero","doi":"10.1080/09593330.2025.2567079","DOIUrl":"https://doi.org/10.1080/09593330.2025.2567079","url":null,"abstract":"This study evaluated the extent to which laboratory-scale biochemical methane potential (BMP) assays predict actual methane production in a full-scale tubular anaerobic digester operating under psychrotrophic conditions. The 8 m³ farm-scale digester, situated in a cold, high-altitude climate, was retrofitted with passive solar heating, resulting in an average sludge temperature of 21.5 ± 1.2°C. In contrast, the mean ambient temperature was kept at 10.6 ± 1.4°C. BMP tests were conducted using the digester influent and effluent as substrate and inoculum, respectively, at mesophilic (35 ± 2°C) and psychrotrophic (23 ± 2°C) temperatures. The methane yield in the full-scale system (0.36 Nm³ CH₄ kg-¹ VS), operated at an average temperature of 21.5°C, significantly exceeded the values obtained in the batch BMP tests (0.19 Nm³ CH₄ kg-¹ VS at 35°C and 0.18 Nm³ CH₄ kg-¹ VS at 23°C). No statistically significant correlation was found between laboratory and field data. These findings show the limited predictive power of BMP testing for farm-scale digester performance in decentralized, low-temperature environments.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-11"},"PeriodicalIF":2.0,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145212136","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}

引用次数: 0

Mechanistic insights into the sludge biodrying process: the evolution of sludge structure and microbial community. 污泥生物干燥过程的机理研究：污泥结构和微生物群落的演变。

IF 2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-10-02 DOI: 10.1080/09593330.2025.2564904

Lei Chen, Ning Li, Zhijian Li, Yajun Shi, Bing Zhu

引用次数: 0

Attenuation of the toxic effects of aluminium by organic acids in rice cultivars. 有机酸对铝在水稻品种中毒性作用的衰减。

IF 2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-10-02 DOI: 10.1080/09593330.2025.2565529

Everaldo Zonta, Rosane Nora Castro, Maura Santos Reis de Andrade da Silva, Camilla Santos Reis de Andrade da Silva, Manlio Silvestre Fernandes, Roberto Oscar Pereyra Rossiello

{"title":"Attenuation of the toxic effects of aluminium by organic acids in rice cultivars.","authors":"Everaldo Zonta, Rosane Nora Castro, Maura Santos Reis de Andrade da Silva, Camilla Santos Reis de Andrade da Silva, Manlio Silvestre Fernandes, Roberto Oscar Pereyra Rossiello","doi":"10.1080/09593330.2025.2565529","DOIUrl":"https://doi.org/10.1080/09593330.2025.2565529","url":null,"abstract":"Soil acidity, specifically the presence of Al + 3 at toxic levels for most crop plants, is one of the main factors limiting agricultural production. However, the relationship between organic acid exudation and its direct influence and magnitude on aluminium tolerance in rice plants remains poorly elucidated in the literature. In order to verify the complexing effect of organic acids on Al, trials were carried out with rainfed rice seedlings of the Comum Branco and Caiapó varieties, under controlled growth conditions, in addition to evaluating the exudation of organic acids and possible changes in their internal root contents as a function of Al. It can be concluded that citric acid was effective in mitigating the toxic effects of Al³+ on the root system of the evaluated rice cultivars. In the absence of aluminium, malic acid promoted an increase in root length. The cultivar Comum Branco exhibited a greater tolerance to Al³+ compared to Caiapó, which may be associated with its higher exudation and accumulation of organic acids in the roots. These results suggest that the action of these mechanisms contributes to the greater aluminium tolerance observed in this cultivar.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-10"},"PeriodicalIF":2.0,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145212035","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}

引用次数: 0

Inhibiting the release of polyvinyl chloride nanoplastics via superoxide ion-induced self-flocculation during polyvinyl chloride microplastics degradation. 超氧离子诱导自絮凝抑制聚氯乙烯微塑料降解过程中聚氯乙烯纳米塑料的释放。

IF 2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-10-02 DOI: 10.1080/09593330.2025.2562602

Yunjiang Zhao, Xin Li, Yiran Qiu, Haiming Yang, Dong Yan, Xin Geng, Lixiang Li, Maowei Ju

{"title":"Inhibiting the release of polyvinyl chloride nanoplastics via superoxide ion-induced self-flocculation during polyvinyl chloride microplastics degradation.","authors":"Yunjiang Zhao, Xin Li, Yiran Qiu, Haiming Yang, Dong Yan, Xin Geng, Lixiang Li, Maowei Ju","doi":"10.1080/09593330.2025.2562602","DOIUrl":"https://doi.org/10.1080/09593330.2025.2562602","url":null,"abstract":"Microplastics (MPs) and nanoplastics (NPs) have attracted widespread attention due to their detrimental effects on the ecosystem and human health. NPs, which are smaller and more harmful than MPs, are generated during the degradation of MPs. The present study aimed to inhibit the release of polyvinylchloride NPs (PVC-NPs) generated during the degradation of PCV-MPs, by using Ultraviolet/ sulphite (UV/SO32-) in the presence of O2 (UV/SO32-/O2). Under optimal conditions, the dechlorination rate and weight loss of PVC-MP were 72.4% and 61.7%, respectively. The chemical changes of the treated PVC-MPs and the intermediates during the degradation of PVC-MPs were investigated. It was confirmed that PVC-NPs form during the degradation PVC-MPs. In addition, PVC-NPs were successfully removed from the water by superoxide ion (O2-)-induced self-flocculation, resulting in a reduced release of PVC-NPs into the water. The weight of the self-flocculation containing PVC-NPs was 5.2 mg. Self-flocculation was investigated by scanning electron microscopy, Fourier transform infrared, and X-ray photoelectron spectroscopy. Numerous C-O-C groups were identified in the self-flocculation. The results indicate a potential process for the removal of PVC-NPs by self-flocculation. This study introduces a new method of degradation of PVC-MPs while simultaneously reducing the release of PVC-NPs.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-13"},"PeriodicalIF":2.0,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145212144","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}

引用次数: 0

Effective removal of water-soluble azo dyes by cubic MgO micromotors. 立方MgO微马达对水溶性偶氮染料的有效去除。

IF 2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-10-01 Epub Date: 2025-06-24 DOI: 10.1080/09593330.2025.2521042

Yanxia Nan, Bozhi Kang, Xiaole Mei, Qi Zhang, Wenjie Zhao

{"title":"Effective removal of water-soluble azo dyes by cubic MgO micromotors.","authors":"Yanxia Nan, Bozhi Kang, Xiaole Mei, Qi Zhang, Wenjie Zhao","doi":"10.1080/09593330.2025.2521042","DOIUrl":"10.1080/09593330.2025.2521042","url":null,"abstract":"As one of the main dyes in the textile industry, azo dyes have a serious impact on the ecological environment and health through their wastewater discharge. It has become crucial to develop effective methods for removing these substances. Currently, research on micro-nano technology is underway to develop new micro-nano systems and materials that can rapidly and effectively remove pollutants and heavy metals from water. This study reported the successful preparation of cubic magnesium oxide (MgO) micromotors dynamic nanomaterials through chemical deposition-hydrothermal-ion sputtering and explored the adsorption performance and mechanism of MgO micromotors on methyl orange (MO) azo dye. The surface morphology, composition and motion trajectory of nanomaterials were analysed using scanning electron microscopy (SEM), transmission electron microscopy (TEM), BET automatic specific surface area and pore size analyser, X-ray diffraction (XRD), upright optical microscopy and NIS-Elements software. The MgO micromotors exhibit a mean square displacement of 4.599 μm2 and an average velocity of 3.87 ± 0.54 μm/s in a 6% H2O2 solution, demonstrating their self-propulsion ability in static water. Furthermore, the adsorption capacity of MgO micromotors for MO is significantly enhanced with increasing H2O2 concentration, reaching a removal rate as high as 97.46% at a 6% H2O2 concentration. Fourier transform infrared spectroscopy (FTIR) analysis confirmed that a strong chemical bond (coordinate bond) was formed between the negatively charged anionic azo dye MO and the MgO micromotors which could be hydrolysed to produce easily dissociated magnesium hydroxide (Mg(OH)2) in aqueous solution, resulting in enhanced adsorption properties.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4831-4841"},"PeriodicalIF":2.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144483718","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}

引用次数: 0

Effect of additives on the electrocatalytic reduction of Fe(II)EDTA complexed NO absorbent. 添加剂对Fe(II)EDTA络合NO吸附剂电催化还原的影响。

IF 2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-10-01 Epub Date: 2025-06-28 DOI: 10.1080/09593330.2025.2522479

Jing Ding, Yue Liang, Ziwei Liu, Hua Tong

{"title":"Effect of additives on the electrocatalytic reduction of Fe(II)EDTA complexed NO absorbent.","authors":"Jing Ding, Yue Liang, Ziwei Liu, Hua Tong","doi":"10.1080/09593330.2025.2522479","DOIUrl":"10.1080/09593330.2025.2522479","url":null,"abstract":"The Fe(II)EDTA complexing nitric oxide (F-NO) absorption solution was regenerated using an electrocatalytic reduction system with Fe-Pd/NF as the working electrode. The study investigated the effects of additives such as sodium citrate, sodium acetate, sodium formate and ascorbic acid on the reduction of F-NO, using indicators like the F-NO removal rate, N2 selectivity, Fe2+ regeneration rate, and N2 Faraday efficiency. Linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS) analysis revealed that adding these additives increases current density, ion conductivity, and mass transfer rate, facilitating the reduction reaction. While all additives enhanced the F-NO removal rate and Fe2+ regeneration rate, their concentration does not significantly impact the removal rate. Sodium formate exhibited the highest F-NO reduction efficiency, reaching 88.26%. The inclusion of ascorbic acid increases the Fe2+ regeneration rate to 98%. N2 selectivity was found to be related to the presence of active hydrogen. When using 30 mmol/L of sodium formate or ascorbic acid alone, the effect on N2 selectivity and Faraday efficiency were notably high, with N2 selectivity reaching 87.91% and 82.12%, respectively, and corresponding Faraday efficiencies is 76.74% and 78.75%. The research results highlight that the pH buffering capabilities of sodium citrate, sodium acetate, and sodium formate facilitate a favorable reduction reaction within an acidic pH range of 2.5-4.5. Additionally, the reductive properties of sodium formate and ascorbic acid promote the generation of active hydrogen during electrocatalysis, which aids in the regeneration of Fe(II) and enhances nitrogen selectivity.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4932-4951"},"PeriodicalIF":2.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144527021","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}

引用次数: 0