Environmental Technology & Innovation最新文献

{"title":"Studies on the bioaugmentation of Mycolicibacterium aubagnense HPB1.1 in aerobic granular sludge from a WWTP: Adaptability of native prokaryotes and enhancement of paracetamol intermediate metabolites biodegradation","authors":"Jorge D. Carlier ,&nbsp;Alba Lara-Moreno ,&nbsp;Benjamin Igbodo ,&nbsp;Maria C. Costa","doi":"10.1016/j.eti.2025.104073","DOIUrl":"10.1016/j.eti.2025.104073","url":null,"abstract":"<div><div>This study aimed to evaluate for the first time the bioaugmentation of <em>Mycolicibacterium aubagnense HPB1.</em>1 in Sequencing Batch Reactors (SBRs) with Aerobic Granular Sludge (AGS), and its effect on the biodegradation of Paracetamol, also known as Acetaminophen and N -acetyl-para-aminophenol (APAP). The bioaugmentation was effective and persisted for at least nine days after five inoculations performed in 24 days (relative abundance of <em>M. aubagnense</em> was 0.13 ± 0.05 % in the test reactors and 0.0079 ± 0.0008 % in the control reactors) and for eight days after seven inoculations performed in 40 days (relative abundance of <em>M. aubagnense</em> was 0.04 ± 0.02 % in the tests and 0.0005 ± 0.0005 % in the controls). In what concerns APAP biodegradation, the results showed a faster removal of its transformation products Hydroquinone (HQ), 2,5-dihydroxy-1,4-benzoquinone (2,5-HO-BQ) and 1,4-benzoquinone (BQ) in the bioreactors bioaugmented with the bacterial strain <em>M. aubagnense</em> HPB1.1 (59 % or 85 % of HQ, 67 % or 85 % of 2,5-HO-BQ and 75 % or 82 % of BQ removals, respectively for assay 1 or assay 2) in comparison to the non-bioaugmented bioreactors (15 % or 31 % of HQ, 36 % or 63 % of 2,5-HO-BQ and no removal of BQ, also for assy 1 and 2, respectively). Regarding the effect on organics and nutrients treatment, overall, the SBR conditions favored ammonia, nitrites, and organics removal. Yet, the conditions did not allow complete denitrification nor higher assimilation than release of PO₄^3-.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104073"},"PeriodicalIF":6.7,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143377739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Adding urease inhibitor into nitrogen fertilizer of hydrothermal aqueous phase decreases NH3 volatilization but may inhibit lettuce root development","authors":"Hua Huang ,&nbsp;Xiaoyan Liu ,&nbsp;Xianying Shan ,&nbsp;Jingrong Yang ,&nbsp;Lijuan Ding ,&nbsp;Rongyu Zhang ,&nbsp;Jiale Dai ,&nbsp;Yanzhong Zhen ,&nbsp;Jian Wang ,&nbsp;Di Guo ,&nbsp;Yu Liu ,&nbsp;Wenfeng Jiang ,&nbsp;Zhirui Niu","doi":"10.1016/j.eti.2025.104075","DOIUrl":"10.1016/j.eti.2025.104075","url":null,"abstract":"<div><div>Since hydrothermal aqueous phase (HAP) contains abundant nutrients and humic-like substances, it is developed as nitrogen (N) fertilizer to improve plant growth and soil quality. However, significant NH₃ volatilization is a major drawback in dryland soil. To solve this problem, a compound fertilizer of HAP and urea was modified with various dosage (0.25 % - 5.0 %) of urease inhibitor N-(n-butyl) thiophosphoric triamide (NBPT). The NH₃, N loss, and lettuce growth were evaluated in parallel soil column and pot experiments. Results showed that increasing NBPT dosage increased soil dissolved organic N (DON) and ON while decreased NH₄-N, NH₃, N loss, urease activity, and <em>ureC</em>. NBPT successfully inhibited ammonification. Increasing NBPT dosage increased NO₃-N but decreased PAO and <em>AOA</em>. The utilization rate of metabolic substrate (NH₄-N) was more important for forming NO₃-N, as evidenced by the negative correlation of NO₃-N and NH₃. The DON from HAP included N-heterocyclic compounds, which are toxic for nitrifiers. The toxic DON also significantly decreased root dry weight by 22.31 % when 5.0 % NBPT was added. The optimal additive dosages were 0.5 % and 2.0 % in the column and pot experiments, respectively, which decreased NH₃ and N loss by 45.38 % and 32.08 %. Further increasing NBPT dosage no longer decreased N loss but did harm to plant root. Therefore, this study demonstrated that an appropriate addition of NBPT to HAP fertilizer can effectively reduce ammonia volatilization and N loss. The innovative technique would promote the utilization of HAP resource within the context of sustainable dryland agriculture.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104075"},"PeriodicalIF":6.7,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143372746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Exploring the potential of distillery vinasses through upcycling: Pathways to a circular economy","authors":"María Fernanda Ramos-Reyes ,&nbsp;Martín Esteban González-López ,&nbsp;Paloma Barajas-Álvarez ,&nbsp;Christian Enrique Garcia-Garcia ,&nbsp;Diego Antonio Tuesta-Popolizio ,&nbsp;Solange I. Mussatto ,&nbsp;Misael Sebastián Gradilla-Hernández","doi":"10.1016/j.eti.2025.104072","DOIUrl":"10.1016/j.eti.2025.104072","url":null,"abstract":"<div><div>Distillery production, particularly for bioethanol and alcoholic beverages, generates substantial quantities of liquid waste known as vinasses. Typically, 10–15 liters of vinasses are produced for every liter of distilled product. This poses significant environmental challenges, including eutrophication and soil pollution. To address these issues, this systematic review comprehensively evaluates various valorization pathways for distillery vinasses management. The review analyzed 72 treatments involving vinasses from the ethanol industry, alcoholic beverage production, and their combinations with agro-industrial residues. These treatments were categorized into three major valorization pathways: waste-to-energy, waste-to-food, and waste-to-product. While the characteristics of the produced products were found to be independent of the substrate used, biotechnological treatments, such as two-stage anaerobic digestion and fungal anaerobic fermentation, demonstrated superior product yield and diversity. Fungal-based treatments stood out as the most effective, particularly for their ability to process complex substrates and enhance the production of high-value products. Furthermore, the production of polymers and enzymes using bacteria highlighted the potential for generating secondary high-value-added products from primary valorization processes, creating additional economic opportunities. Despite these promising findings, the lack of specific and comprehensive regulations addressing vinasses treatment and valorization remains a significant challenge. Moreover, tools like life cycle assessment (LCA) and techno-economic analysis, essential for ensuring sustainable and practical solutions, remain underused in this area.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104072"},"PeriodicalIF":6.7,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143350784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Biodegradation of various phthalic acid esters at high concentrations by Gordonia alkanivorans GH-1 and its degradation mechanism","authors":"Chuanning Peng ,&nbsp;Jie Tang ,&nbsp;Xuan Yu ,&nbsp;Xuerui Zhou ,&nbsp;Mingji Wang ,&nbsp;Yingyue Zhang ,&nbsp;Hu Zhou ,&nbsp;Siqi Huang ,&nbsp;Qi Wen ,&nbsp;Siqi Chen ,&nbsp;Wenliang Xiang ,&nbsp;Qing Zhang ,&nbsp;Ting Cai","doi":"10.1016/j.eti.2025.104066","DOIUrl":"10.1016/j.eti.2025.104066","url":null,"abstract":"<div><div>Dibutyl phthalate (DBP) is one of the most widely used phthalic acid esters (PAEs) and can easily be released into the environment and food, posing a significant threat to food safety and human health. In this study, <em>Gordonia alkanivorans</em> GH-1, which was previously isolated from fermented Pixian Doubanjiang in the laboratory, could effectively degrade various PAEs at high concentrations within 48 h, with the degradation efficiency of 2000 mg/L DBP reaching as high as 93.14 % under optimal degradation conditions. Furthermore, the biodegradation mechanism of DBP by strain GH-1 was explored using GC-MS and genomics technology, and the expression of key genes was validated through RT-qPCR. A novel carboxylesterase gene (<em>est1833</em>) was successfully cloned and expressed and the recombinant strain <em>Escherichia coli</em> BL21-p28a-<em>est1833</em> was demonstrated the capability to degrade DBP. The interaction mechanism between the Est1833 and DBP was predicted by structural modeling and molecular docking. In summary, these findings enhance the understanding of the molecular mechanism of DBP biodegradation by <em>G. alkanivorans</em> GH-1 while providing a scientific foundation for future applications in environmental and food bioremediation.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104066"},"PeriodicalIF":6.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143359499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Influence of irrigation with pulp and paper mill wastewater on bacterial communities of reed fields","authors":"Zhaoxia Li ,&nbsp;Sainan Luo ,&nbsp;Xuan Li ,&nbsp;Tianming Chen ,&nbsp;Weixing Ma ,&nbsp;Liqiang Cui ,&nbsp;Songnian Hu ,&nbsp;Cheng Ding ,&nbsp;Jianing Geng","doi":"10.1016/j.eti.2024.103925","DOIUrl":"10.1016/j.eti.2024.103925","url":null,"abstract":"<div><div>The impact of wastewater on the ecological functioning of constructed wetland systems can be assessed by analyzing the microbial diversity, profiling, and community structure of soils irrigated with wastewater. In this study, we utilized in situ, culture-independent 16S rRNA sequencing technology to comprehensively investigate the biodiversity, abundance, and structure of bacterial communities in reed field soils irrigated with pretreated pulp and paper wastewater (PPW) and freshwater. Our results revealed significant differences in bacterial communities across freshwater-irrigated wetlands, short-term wastewater-irrigated wetlands, and long-term wastewater-irrigated wetlands. Redundancy analysis and Spearman's correlation analysis demonstrated that soil pollutants (TX and AOX), nutrients (TN and TP), and heavy metals significantly influenced the microbial community structure. These findings underscore the importance of microbial monitoring and suggest that irrigation should be discontinued after 10 years to facilitate the recovery of wetland ecosystems.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"37 ","pages":"Article 103925"},"PeriodicalIF":6.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143179488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Arsenic removal by Spherical Agglomeration Technique in groundwater using vegetable oil instead of n-heptane","authors":"O.A. Torres-Corral ,&nbsp;J.C. Rojas-Montes ,&nbsp;S. Valle-Cervantes ,&nbsp;F.A. Alcazar-Medina","doi":"10.1016/j.eti.2024.103955","DOIUrl":"10.1016/j.eti.2024.103955","url":null,"abstract":"<div><div>Arsenic present in groundwater is a global problem that requires innovative remediation, this study used the Spherical Agglomeration Technique (SAT) using Fe(OH)₃ as adsorbent, Agave extract as biosurfactant, and olive oil as humectant. The primary objective was to evaluate the olive oil versus n-heptane efficacy in arsenic removal within the SAT methodology while assessing the synergistic effects of varying adsorbent (AD) and humectant (HD) dosages. Experiments evaluated arsenic-contaminated water models and groundwater with adsorbent concentrations ranging from 30 to 150 g _Fe(OH)₃/L and humectant dosages from 3.0 to 9.0 mL _Hum/g _TMC. Initial arsenic levels in aqueous models were established at 100 µg/L, maintaining pH at 7.0, 300 rpm stirring speed, and 0.5 g _Ext/g _TMC surfactant dosage. The SAT process efficiency was evaluated under optimized conditions for aqueous models and groundwater samples. In aqueous models, optimal arsenic removal was achieved with a AD of 150 g _Fe(OH)₃/L and HD of 6 mL _Hum/g_TMC, resulting in final arsenic concentrations of 3.2 µg/L, with iron and calcium levels compliant with regulatory limits. For groundwater, reduced dosage of 30 g _Fe(OH)₃/L and higher humectant dosage of 9.0 mL _Hum/g _TMC enabled arsenic reduction to 3.5 µg/L while maintaining minimal final concentrations of iron (0.01 mg/L) and calcium; the results highlight olive oil's superior performance over n-heptane, demonstrating the importance of precise dosage optimization for maximum efficacy, this study positions olive oil as a viable and sustainable solution for treating arsenic in water via SAT, which can be tailored to specific circumstances.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"37 ","pages":"Article 103955"},"PeriodicalIF":6.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143178496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Bioaugmentation strategy for mitigating pollutant gas emissions in food waste composting using fermented mixtures","authors":"Anqi Wang,&nbsp;Jingjing Xue,&nbsp;Bo Pang,&nbsp;Haozhe Wang,&nbsp;Zhicheng Xu,&nbsp;Ruixue Chang,&nbsp;Yanming Li","doi":"10.1016/j.eti.2024.103919","DOIUrl":"10.1016/j.eti.2024.103919","url":null,"abstract":"<div><div>The fermented mixtures at different composting stages exhibit varying physicochemical and microbiological properties, adding them to compost, which may show different biological enhancement abilities. This study analyzed the efficiency of fermented mixtures in mitigating pollutant gas emissions during composting, through the co-composting of food waste and sawdust, supplemented with 20 % fermented mixtures from different composting stages: thermophilic (TS), cooling (CS), and mature (MS). Results revealed that fermented mixtures affected the composting process and pollutant gas emissions by regulating bacterial communities. The TS treatment increased the abundance of high-temperature resistant organic matter degrading bacteria, thereby effectively promoting temperature and reaching the highest peak temperature (&gt; 70 °C) in just 2 days. Among all the treatments, TS exhibited the most pronounced reduction in N₂O emissions, inhibiting the proliferation of bacteria engaged in nitrite respiration, which resulted in reducing overall N₂O emissions by 20.7 %. Furthermore, TS outperformed both CK and MS treatments regarding CO₂ reduction, achieving declines of 11.2 % and 20.2 %, respectively. The MS treatment diminished the abundance of acidogens and methanogens bacteria, such as <em>Lactobacillus</em>, <em>Weissella</em>, and <em>Leuconostoc</em>, resulting in a 24.2 % reduction in methane emissions compared to CK. In contrast, the CS treatment had minimal effect, reducing methane emissions by 4.2 %. In conclusion, thermophilic compost demonstrated superior effectiveness in reducing pollutant gas emissions compared to other fermented mixtures. Additionally, owing to its economic advantages, thermophilic compost can be produced significantly faster than the others. Therefore, thermophilic compost is recommended as a bioaugmentation technology that synergistically offers environmental benefits and cost-effectiveness.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"37 ","pages":"Article 103919"},"PeriodicalIF":6.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143179173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Adsorption of arsenic (V) by biologically reductive lanthanum-loaded bentonite: Transportation and injection removal experiments","authors":"Dayong Luo ,&nbsp;XiaoSong Tian ,&nbsp;Ruxiang Qin","doi":"10.1016/j.eti.2024.103922","DOIUrl":"10.1016/j.eti.2024.103922","url":null,"abstract":"<div><div>Iron reducing bacterium <em>Acidiphilium cryputum JF-5</em> was used to biologically load lanthanum on bentonite (BLB) to remove arsenic(V) from solution. By biological reductive release of iron from bentonite and lanthanum loading, new lanthanum-loaded bentonite was prepared and the adsorption efficiency of arsenic(V) was improved from 7.87 mg/g to 22.69 mg/g in bath experiment. The mobilization of the dispersed biologically loaded lanthanum bentonite particles can be described by the Convection-Dispersion Equation. The breakthrough ability of biologically lanthanum-loaded bentonite (BLB) increased by 5.5 times when increasing flow velocities from 90 mL/h to 360 mL/h. When injected BLB into arsenic(V)-containing pre water of quartz column, the concentration of arsenic(V) could quickly decrease the initial concentration of arsenic(V) from 2000 μg/L to lower than limit for drinking water and keep relative stable. Meanwhile, the hydraulic conductivity of treatment system is also improved compared to prinstine bentonite due to iron-deficient in BLB. The results suggest that biologically load lanthanum bentonite may be an effective modified mineral for remediating arsenic(V)-containing soil.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"37 ","pages":"Article 103922"},"PeriodicalIF":6.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143178507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 feasibility analysis of carbon dioxide hydrate sequestration: A numerical study based on horizontal well networks","authors":"Yuxuan Li ,&nbsp;Zhaobin Zhang ,&nbsp;Shouding Li ,&nbsp;Jianming He ,&nbsp;Zhuoran Xie ,&nbsp;Xiao Li ,&nbsp;Cheng Lu ,&nbsp;Xuwen Qin","doi":"10.1016/j.eti.2024.104009","DOIUrl":"10.1016/j.eti.2024.104009","url":null,"abstract":"<div><div>Carbon dioxide sequestration is a crucial strategy for achieving carbon neutrality. This study explores a novel approach to carbon dioxide storage in marine environments in the form of hydrate, addressing the stringent site requirements of traditional geological storage methods. Using a custom-developed simulator, a conceptual model for carbon dioxide sequestration in subsea reservoirs under a horizontal well network configuration was constructed. Key factors, including seawater depth, injection depth, and well spacing, were analyzed through simulations to quantify carbon dioxide storage capacity and assess associated risks under various sequestration scenarios. The results indicate that increasing seawater depth boosts both CO₂ storage capacity and safety, while deeper injection enhances safety but reduces hydrate storage capacity and raises leakage potential. Closer well spacing improves early-stage safety but increases long-term risks. The study outlines distinct sequestration stages and provides detailed analyses of CO₂ migration and phase transformations over time, contributing insights for advancing CO₂ sequestration strategies.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"37 ","pages":"Article 104009"},"PeriodicalIF":6.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143178922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Reinforcing natural attenuation of Cr(VI) in groundwater through single- and composite BDOM-NEVO reagents: Performance contrast and mechanistic insights","authors":"Zhenjun Zhou ,&nbsp;Shiyu Wang ,&nbsp;Baonan He ,&nbsp;Jiangtao He ,&nbsp;Hua Zou ,&nbsp;Mingming Li","doi":"10.1016/j.eti.2024.103967","DOIUrl":"10.1016/j.eti.2024.103967","url":null,"abstract":"<div><div>The natural attenuation by microbes is crucial for removing residual Cr(VI) in remediation processes. However, insufficient natural attenuation can lead to pollutant rebound or tailing phenomena, affecting remediation efficiency. To address this issue, this study explored the enhancement effects and mechanisms of action of environmentally friendly carbon sources (NEVO), soluble biochar (BDOM), and their coupling (BDOM-NEVO) on the removal of residual Cr(VI). The results showed that BDOM-NEVO achieved the best removal performance, significantly outperforming NEVO and BDOM. This superiority is attributed to BDOM-NEVO's smaller particle size (262.2 nm), lower viscosity (1.2 mPa·s), richer oxygen-containing functional groups, as well as higher electron transfer activity (1.2–3.6 times higher). In the cyclic experiments (I-VI), the higher removal efficiency (1.9–2.4 times higher than NEVO) and shorter half-life (half of NEVO's) ensure the long-term effectiveness of BDOM-NEVO. The microbial physiological results indicate that BDOM-NEVO exhibits superior performance, the primary mechanism involves promoting the growth of microbial communities like <em>Sphingomonas</em> containing chromium-resistant genes (ChrA, ChrR, and AzoR), significantly enhancing metabolic pathways and synergistic interactions among microbial communities, thereby improving the natural attenuation efficiency of Cr(VI). These findings offer valuable insights into improving the remediation efficiency of residual Cr(VI) pollution.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"37 ","pages":"Article 103967"},"PeriodicalIF":6.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143179496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}