ACS ES&T water最新文献_第4页

Bifunctional Catalyst ZVI@PDA Mediated the Reduction Coupling Oxidation Reaction of Triclosan to Achieve a High Mineralization Rate 双功能催化剂ZVI@PDA介导三氯生还原偶联氧化反应实现高矿化率

IF 4.8

ACS ES&T water Pub Date : 2025-04-22 DOI: 10.1021/acsestwater.5c0005710.1021/acsestwater.5c00057

Xiaowei Wu, Jianhua Hu, Guoxin Sun, Zhimin Gong, Bo Fan*, Shipeng Dong, Kun Lu*, Shixiang Gao, Yanting Mao and Baokun Lei,

{"title":"Bifunctional Catalyst ZVI@PDA Mediated the Reduction Coupling Oxidation Reaction of Triclosan to Achieve a High Mineralization Rate","authors":"Xiaowei Wu, Jianhua Hu, Guoxin Sun, Zhimin Gong, Bo Fan*, Shipeng Dong, Kun Lu*, Shixiang Gao, Yanting Mao and Baokun Lei, ","doi":"10.1021/acsestwater.5c0005710.1021/acsestwater.5c00057","DOIUrl":"https://doi.org/10.1021/acsestwater.5c00057https://doi.org/10.1021/acsestwater.5c00057","url":null,"abstract":"Zerovalent iron (ZVI)-based advanced oxidation processes for dechlorination degradation of chlorophenol pollutants are limited due to the existence of highly electronegative chlorine atoms on benzene. This study developed a polydopamine (PDA)-coated ZVI bifunctional catalyst (ZVI@PDA) to undergo a sequential reduction–oxidation reaction for the degradation of triclosan (TCS). Results showed that the solution TOC decreased by 17.89 and 24.09% after the separate reduction and oxidation process of TCS, while the solution TOC decreased by 76.90% through the sequential reduction–oxidation process. Mechanism exploration showed that the only oxidation process was not conducive to the dechlorination and mineralization of TCS, and the oxidation products of TCS were mainly 3-Cl and 2-Cl products. The predechlorination of TCS catalyzed by ZVI@PDA via a hydrogen atom (H•) could form 2-Cl and 1-Cl products, which were more easily oxidized and mineralized into lower-molecular-weight products during the oxidation process. Density functional theory calculations also showed that the 2-Cl and 1-Cl products of TCS reduction were more prone to be oxidized to lower-molecular-weight products. Overall, these findings proposed a sequential reduction–oxidation strategy that could efficiently and harmlessly eliminate chlorinated organic chemicals in aquatic ecosystems.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 5","pages":"2490–2501 2490–2501"},"PeriodicalIF":4.8,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Insights from a Long-Term Outdoor Mesocosm Study: eDNA Metabarcoding Reveals Exacerbated but Transient Impacts from a Nanoenabled Pesticide Formulation (Nano-TiO₂-Coated Carbendazim) on Freshwater Microbial Communities. 一项长期室外环境研究的见解：eDNA元条形码揭示了纳米农药制剂（纳米二氧化钛包被多菌灵）对淡水微生物群落的加剧但短暂的影响。

IF 4.8

ACS ES&T water Pub Date : 2025-04-22 eCollection Date: 2025-05-09 DOI: 10.1021/acsestwater.5c00014

Martin van der Plas, Tom A P Nederstigt, Krijn B Trimbos, Emilie A Didaskalou, Martina G Vijver

{"title":"Insights from a Long-Term Outdoor Mesocosm Study: eDNA Metabarcoding Reveals Exacerbated but Transient Impacts from a Nanoenabled Pesticide Formulation (Nano-TiO2-Coated Carbendazim) on Freshwater Microbial Communities.","authors":"Martin van der Plas, Tom A P Nederstigt, Krijn B Trimbos, Emilie A Didaskalou, Martina G Vijver","doi":"10.1021/acsestwater.5c00014","DOIUrl":"https://doi.org/10.1021/acsestwater.5c00014","url":null,"abstract":"Fungicides currently encompass the second-most-used class of agricultural pesticides globally. Residues are frequently detected in freshwater, leading to undesired ecological impacts. Nanoenabled pesticide formulations have recently gained prominence in the scientific literature and have been suggested to exhibit favorable properties over conventional pesticide formulations by facilitating reductions in emissions toward nontarget locations. However, data on unintended effects on nontarget aquatic communities are scarce, especially concerning microbial communities. In this study, long-term effects of nano titanium-dioxide- (nTiO2)-coated carbendazim and its constituents on (pelagic) freshwater microbial communities in simulated agricultural ditches were investigated over a period of 14 weeks using environmental DNA (eDNA) metabarcoding. Impacts on bacterial diversity (α and β) were observed 2 weeks after the treatment application and most pronounced in the nTiO2-coated carbendazim treatment, followed by its active substance, i.e., noncoated carbendazim. The observed patterns possibly imply that nTiO2-coated carbendazim imposed more pronounced and potentially delayed or extended effects compared to the noncoated form of carbendazim. Bacterial communities also proved to be resilient under the tested conditions as they returned to the control-state within 5 weeks after the treatment application. Overall, our data suggest that eDNA metabarcoding data on microbial communities can help uncover time-dependent effects of nanoformulated pesticides.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 5","pages":"2421-2431"},"PeriodicalIF":4.8,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12070410/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144082716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterization of Aquatic Acinetobacter baumannii during the COVID-19 Outbreak in Wuhan, China 武汉2019冠状病毒病暴发期间水生鲍曼不动杆菌的特征

IF 4.8

ACS ES&T water Pub Date : 2025-04-22 DOI: 10.1021/acsestwater.4c0127810.1021/acsestwater.4c01278

Jie Mao, Qiaojuan Wang, Xijuan Wang, Sha Shi, Yaohui Bai* and Jiuhui Qu,

{"title":"Characterization of Aquatic Acinetobacter baumannii during the COVID-19 Outbreak in Wuhan, China","authors":"Jie Mao, Qiaojuan Wang, Xijuan Wang, Sha Shi, Yaohui Bai* and Jiuhui Qu, ","doi":"10.1021/acsestwater.4c0127810.1021/acsestwater.4c01278","DOIUrl":"https://doi.org/10.1021/acsestwater.4c01278https://doi.org/10.1021/acsestwater.4c01278","url":null,"abstract":"Acinetobacter baumannii is an emerging nosocomial pathogen that poses a significant challenge to healthcare systems. Antibiotics remain the primary approach for treating A. baumannii infections. Clinical strains of A. baumannii may share ecological and genetic links with environmental isolates, particularly in aquatic environments, making the investigation of resistance profiles in environmental strains relevant to developing treatment strategies for A. baumannii-related infections. Metagenomic binning was employed to reconstruct two metagenome-assembled genomes (MAGs) of A. baumannii from surface water samples collected from the Yangtze River during the COVID-19 pandemic. Analyses revealed that these MAGs harbored antibiotic resistance genes associated with β-lactams, multidrug resistance, and tetracyclines. In addition, phylogenetic analysis showed that the assembled A. baumannii strains were closely related to the IC11 clade of clinical A. baumannii isolates, based on a comparison with 28 clinical strains. According to the resistance gene profiles of the MAGs, we found that 2 (13 in total) commonly used antibiotics in China and 20 (29) WHO-recommended “last-resort” antibiotics had potential efficacy in the treatment. The findings underscore the value of environmental surveillance for understanding resistance mechanisms in A. baumannii and informing strategies to mitigate its clinical and public health impact.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 5","pages":"2373–2380 2373–2380"},"PeriodicalIF":4.8,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Innovative PN/A Process Optimization with Dual Intensification Strategies for Nitrogen Removal from Rare Earth Tailwater 基于双强化策略的稀土尾气脱氮创新PN/A工艺优化

IF 4.8

ACS ES&T water Pub Date : 2025-04-21 DOI: 10.1021/acsestwater.5c0005810.1021/acsestwater.5c00058

Yu Zhang, Yongxing Chen, Jiayi Li, Yiyi Wu, Junfeng Yang, Qiu Li, Zhenyu Wang, Guoqing Ren, Chuanhang Xu and Xiaojun Wang*,

{"title":"Innovative PN/A Process Optimization with Dual Intensification Strategies for Nitrogen Removal from Rare Earth Tailwater","authors":"Yu Zhang, Yongxing Chen, Jiayi Li, Yiyi Wu, Junfeng Yang, Qiu Li, Zhenyu Wang, Guoqing Ren, Chuanhang Xu and Xiaojun Wang*, ","doi":"10.1021/acsestwater.5c0005810.1021/acsestwater.5c00058","DOIUrl":"https://doi.org/10.1021/acsestwater.5c00058https://doi.org/10.1021/acsestwater.5c00058","url":null,"abstract":"The partial nitrification/anammox (PN/A) process represents a significant innovation in the treatment of nitrogen-containing wastewater. However, due to the relatively low ammonium concentration in rare earth tailwater (RET), the application of the PN/A process requires two critical adjustments: stable nitrite accumulation and the enhancement of anammox bacteria activity. This study evaluates a pilot-scale PN/A system for low-ammonium RET treatment, incorporating two innovative intensification strategies to enhance the stability and efficiency. The PN reactor used zeolite packing to elevate in situ free ammonia, washing out nitrite-oxidizing bacteria, and maintaining a nitrite accumulation ratio above 90%. Exogenous hydrazine (4 mg/L) added to the anammox reactor enhanced the secretion of extracellular polymeric substances and improved the sludge activity. Furthermore, the supplementary electrons provided by hydrazine influenced nitrogen metabolic pathways, thereby enhancing the reactor’s resistance to nitrogen fluctuations. Nitrosomonas (13.42%) was the dominant genus in the PN reactor and Candidatus Brocadia (15.26%) in the anammox reactor. Candidatus Brocadia and Saccharimonadales form a cooperative syntrophic microbial community. These innovations demonstrate the effectiveness of dual intensification strategies in improving PN/A system performance, addressing nitrogen management challenges in rare earth mining effluents, and showing the potential for broader applications in low-ammonium wastewater treatment.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 5","pages":"2502–2511 2502–2511"},"PeriodicalIF":4.8,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Porphyrin-Based Metal–Organic Frameworks as Sustainable Photocatalysts for Micropollutant Degradation: A Critical Review on Structure, Mechanism and Future Perspectives 基于卟啉的金属-有机框架作为微污染物降解的可持续光催化剂：结构、机理及未来展望

IF 4.8

ACS ES&T water Pub Date : 2025-04-21 DOI: 10.1021/acsestwater.5c0001310.1021/acsestwater.5c00013

Neda Afreen, Naseem Ahmad, Greesh Kumar, Abdul Hakeem Anwer, Abdelbaki Benamor, Frederic Coulon* and Nafees Ahmad*,

{"title":"Porphyrin-Based Metal–Organic Frameworks as Sustainable Photocatalysts for Micropollutant Degradation: A Critical Review on Structure, Mechanism and Future Perspectives","authors":"Neda Afreen, Naseem Ahmad, Greesh Kumar, Abdul Hakeem Anwer, Abdelbaki Benamor, Frederic Coulon* and Nafees Ahmad*, ","doi":"10.1021/acsestwater.5c0001310.1021/acsestwater.5c00013","DOIUrl":"https://doi.org/10.1021/acsestwater.5c00013https://doi.org/10.1021/acsestwater.5c00013","url":null,"abstract":"The growing concerns due to the presence of micropollutants in the environment necessitate the development of advanced and sustainable technologies for their degradation. For this problem, Porphyrin-based Metal–Organic Frameworks (P-MOFs) are used as highly efficient photocatalysts for the degradation of micropollutants. The incorporation of metal ions into Porphyrin moieties offers a synergistic approach, combining the unique properties of P-MOFs with porosity, redox behavior, and band gap energy. This critical review provides an overview of the structures, synthesis methods, and mechanisms underlying the photocatalytic activity of P-MOFs. Recent advances and research findings are discussed, highlighting the promising outcomes and breakthroughs achieved. Performance evaluations, comparative analyses, and considerations of practical applications are explored, emphasizing the environmental impact and sustainability of the P-MOFs. Moreover, current challenges, future perspectives, and proposals for further research to enhance the efficacy of P-MOFs in addressing environmental remediation are discussed. The review concludes with insights that P-MOFs can be used as effective and stable photocatalysts for the degradation of a wide range of micropollutants without losing their activity.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 5","pages":"2028–2040 2028–2040"},"PeriodicalIF":4.8,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Generation of Eroded Nanoplastics from Real World Wastes and Their Capacity for Heavy Metal Adsorption 从现实世界的废物中生成侵蚀纳米塑料及其对重金属的吸附能力

IF 4.8

ACS ES&T water Pub Date : 2025-04-21 DOI: 10.1021/acsestwater.4c0119110.1021/acsestwater.4c01191

Ananda Pokhrel, Mohammad Saiful Islam and Somenath Mitra*,

{"title":"Generation of Eroded Nanoplastics from Real World Wastes and Their Capacity for Heavy Metal Adsorption","authors":"Ananda Pokhrel, Mohammad Saiful Islam and Somenath Mitra*, ","doi":"10.1021/acsestwater.4c0119110.1021/acsestwater.4c01191","DOIUrl":"https://doi.org/10.1021/acsestwater.4c01191https://doi.org/10.1021/acsestwater.4c01191","url":null,"abstract":"Our study investigates the generation of nanoplastics (NPs) from real-world plastic waste and their capacity to adsorb heavy metal (HM) ions. NPs, synthesized from polyethylene terephthalate (PET), polystyrene (PS), and polypropylene (PP) using a milling method, were characterized using dynamic light scattering (DLS) and scanning electron microscopy (SEM), confirming particle sizes below 200 nm. Manganese (Mn2+), cobalt (Co2+), zinc (Zn2+), cadmium (Cd2+), and lead (Pb2+) at concentrations ranging from 50.0 parts per billion (ppb) to 2.0 ppm (ppm) were exposed to the NPs. Residual HM concentrations were measured using inductively coupled plasma mass spectrometry (ICP-MS). PP exhibited the highest adsorption capacities, with Langmuir maximum adsorption capacity (qm) values of 90.91 μg per gram (μg/g) for Mn2+, 114.94 μg/g for Co2+, 101.01 μg/g for Zn2+, and 107.53 μg/g for Cd2+. Pb2+ showed rapid adsorption, with over 99% adsorption within 5 min, with a capacity of 396.1 μg/g on PP, 390.6 μg/g on PET, and 393.2 μg/g on PS. Adsorption kinetics followed a pseudo-second-order model, suggesting chemisorption, while Langmuir and Freundlich isotherms supported monolayer adsorption.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 5","pages":"2291–2299 2291–2299"},"PeriodicalIF":4.8,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rapid Colorimetric Indicator for Oil Sands Process-Affected Water: An Alternative to Vertebrate Assays for Whole Effluent Toxicity Determination 油砂工艺影响水的快速比色指示剂：一种替代脊椎动物试验的全流出物毒性测定方法

IF 4.8

ACS ES&T water Pub Date : 2025-04-20 DOI: 10.1021/acsestwater.4c0095110.1021/acsestwater.4c00951

Zi Qi Chen, Timothy M. C. Leshuk, Kerry Peru, John Headley and Frank Gu*,

{"title":"Rapid Colorimetric Indicator for Oil Sands Process-Affected Water: An Alternative to Vertebrate Assays for Whole Effluent Toxicity Determination","authors":"Zi Qi Chen, Timothy M. C. Leshuk, Kerry Peru, John Headley and Frank Gu*, ","doi":"10.1021/acsestwater.4c0095110.1021/acsestwater.4c00951","DOIUrl":"https://doi.org/10.1021/acsestwater.4c00951https://doi.org/10.1021/acsestwater.4c00951","url":null,"abstract":"The Athabasca oil sands in northern Alberta are estimated to hold over 170 billion barrels of crude oil reserves. The bitumen mining and extraction process generates large amounts of oil sands process-affected water (OSPW), the discharge of which is currently prohibited. One of the federal regulatory guidelines emphasizes using Whole Effluent Toxicity (WET) to determine aquatic acute and chronic toxicity. This process is costly and lengthy and involves potentially ethically concerning fish assays. This study proposes a rapid colorimetric indicator based on the selective chemical labeling of toxic components in OSPW. The new method can aid the development of treatment monitoring systems and discharge guidelines as an alternative to conventional approaches. The developed method was tested on raw and photocatalytically treated OSPWs sourced from industry. An s-shaped dose–response curve was obtained between the WET to rainbow trout (Oncorhynchus mykiss) and the sensor signal. Furthermore, a clear correspondence was established between signals from the proposed method and the established biomimetic extraction method, demonstrating comparable mechanisms and accuracy. This method presents a new tool for OSPW treatment monitoring toward natural resource reclamation.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 5","pages":"2180–2188 2180–2188"},"PeriodicalIF":4.8,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of Novel Helical Liquid-Bridge Descending Flow in the Wastewater Treatment Process 新型螺旋液桥下降流在废水处理中的应用

IF 4.8

ACS ES&T water Pub Date : 2025-04-18 DOI: 10.1021/acsestwater.4c0090510.1021/acsestwater.4c00905

Ranran Jia, Zhen Zhang, Haifeng Cong* and Xingang Li,

{"title":"Application of Novel Helical Liquid-Bridge Descending Flow in the Wastewater Treatment Process","authors":"Ranran Jia, Zhen Zhang, Haifeng Cong* and Xingang Li, ","doi":"10.1021/acsestwater.4c0090510.1021/acsestwater.4c00905","DOIUrl":"https://doi.org/10.1021/acsestwater.4c00905https://doi.org/10.1021/acsestwater.4c00905","url":null,"abstract":"Carrier packing is an important place for biofilm growth and reproduction, and the activity and quantity of the biofilm attached to it, as well as the hydrodynamic conditions, determine the effect of wastewater treatment. However, the applied packings still have difficulties, such as biofilm clogging, inadequate self-distribution performance, and uneven removal of pollutants in wastewater. The helical liquid-bridge flow has the advantages of superior self-distribution performance, small pressure drop, and fast renewal frequency. Based on this flow form, this study developed a helical liquid-bridge descending flow structured packing for enhanced biofilm wastewater treatment process. The experimental results showed that at a suitable liquid flow rate of 100 mL/min and a pitch of 2.0 mm, the film hanging time of the helical packing could be shortened to 5 days. With the increase of pitch and oxygen contents, a removal rate of more than 90% for both ammonia nitrogen and COD could be achieved, which effectively improved the efficiency of wastewater treatment. This study provides new directions for the structural design and development of biological packings, and the newly developed packing shows significant potential for optimizing the biofilm wastewater treatment process.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 5","pages":"2134–2144 2134–2144"},"PeriodicalIF":4.8,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced Anaerobic Sludge Digestion by Calcium Peroxide Pretreatment Combined with Manganese Dioxide: Performances and Mechanisms 过氧化钙预处理联合二氧化锰强化厌氧污泥消化：性能与机理

IF 4.8

ACS ES&T water Pub Date : 2025-04-18 DOI: 10.1021/acsestwater.4c0122510.1021/acsestwater.4c01225

Lei Liu, Gang Liu, Fangxiao Ruan, Xiaodong Xin, Liguo Zhang* and Haoran Duan,

{"title":"Enhanced Anaerobic Sludge Digestion by Calcium Peroxide Pretreatment Combined with Manganese Dioxide: Performances and Mechanisms","authors":"Lei Liu, Gang Liu, Fangxiao Ruan, Xiaodong Xin, Liguo Zhang* and Haoran Duan, ","doi":"10.1021/acsestwater.4c0122510.1021/acsestwater.4c01225","DOIUrl":"https://doi.org/10.1021/acsestwater.4c01225https://doi.org/10.1021/acsestwater.4c01225","url":null,"abstract":"Anaerobic digestion (AD) of waste-activated sludge for producing methane is a sustainable and efficient sludge treatment technology, yet it faces challenges such as a slow hydrolysis rate and a low methane production rate. This study proposes a novel approach combining calcium peroxide (CaO2) pretreatment and manganese dioxide (MnO2) addition to address these limitations. CaO2 disrupts extracellular polymeric substances and enhances hydrolysis, while MnO2 facilitates direct interspecies electron transfer, boosting the microbial activity and methane production. The results showed that the cumulative methane production increased by 32.22% and 19.91% via the novel combination compared to MnO2 or CaO2 treatment alone. The activity of coenzyme F420 and electron transport system increased to 146.26% and 144.71%, respectively. In addition, microbial community analysis showed that the novel combination enriched hydrogenotrophic methanogens of Methanobacterium and Methanobrevibacte and acetotrophic methanogens of Methanosarcina. The synergistic effect between Geobacter bacteria and Methanosarcina or Methanosaeta increased the methane yield. The emergence of direct electron transfer in microbial communities as an alternative or supplement to indirect electron transfer (via hydrogen or formic acid) significantly improved microbial metabolic activity during AD, which could accelerate organic matters decomposition and methane production. This study provides an efficient sludge treatment way for bioenergy recovery through methane production.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 5","pages":"2333–2342 2333–2342"},"PeriodicalIF":4.8,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical-Based and Hybrid Technologies: Remediation Strategies and Resource Recovery from Dairy Wastewater 基于电化学和混合技术：乳品废水的修复策略和资源回收

IF 4.8

ACS ES&T water Pub Date : 2025-04-18 DOI: 10.1021/acsestwater.5c0003110.1021/acsestwater.5c00031

Aliyu Ahmed Ibrahim, Akeem Adeyemi Oladipo* and Mustafa Gazi,

引用次数: 0