Water ResearchPub Date : 2025-01-23DOI: 10.1016/j.watres.2025.123160
Ruizhe Pei, Erik de Vries, Angel Estévez, João Sousa, Henk Dijkman, Jelmer Tamis, Alan Werker
{"title":"Demonstrating performance in scaled-up production and quality control of polyhydroxyalkanoates using municipal waste activated sludge","authors":"Ruizhe Pei, Erik de Vries, Angel Estévez, João Sousa, Henk Dijkman, Jelmer Tamis, Alan Werker","doi":"10.1016/j.watres.2025.123160","DOIUrl":"https://doi.org/10.1016/j.watres.2025.123160","url":null,"abstract":"Significant progress has been made over the past decade with pilot scale polyhydroxyalkanoate (PHA) production by <em>direct accumulation</em> using municipal waste activated sludge (WAS). However, industrial upscaling experiences are still lacking in the research literature. In this study, a demonstration scale (4<!-- --> <!-- -->m<sup>3</sup>) PHA production process was operated using industrially relevant equipment and compared favourably to those from parallel pilot scale (200<!-- --> <!-- -->L) production runs. WAS grab samples from a Dutch full scale municipal wastewater treatment plant (WWTP) was used as the biomass source. Final biomass PHA contents and production yields, that are critical for technology viability, were statistically the same between the experiments conducted at pilot scale (0.41 ± 0.02 gPHA/gVSS and 0.42 ± 0.02 gCOD/gCOD) and demonstration scale (0.45 ± 0.05 gPHA/gVSS and 0.39 ± 0.07 gCOD/gCOD). The results furthermore aligned with previous 1<!-- --> <!-- -->m<sup>3</sup> piloting experiences and five year old historical data that similarly used WAS sourced from the same WWTP. Scalability for the technology and a robustness of the applied PHA production methods using WAS were demonstrated. Temperature and foaming control were identified to be critical to upscaled process engineering and design towards successful industrial implementations. The results of the present study, combined with previously produced PHAs and those historical data, support that feedstock quality predictably determines both the average PHA co-monomer content, as well as the blend distribution. PHA solvent extraction from WAS is inherently a blending process. Extraction homogeneously mixes polymer contributions from collectively stored granules from all species of microorganisms in the biomass. Dried PHA-rich biomass batches can be stockpiled and batches can be blended in extraction processes for both recovery and formulation to reach consistent polymer qualities across production batches. More centralized extraction facilities are therefore anticipated to offer economic benefits due to scale and greater opportunities for product quality specification and control. Research findings are presented herein of the production scale comparative study along with practical perspectives of technological readiness for realizing WAS based industrial scale PHA production, quality control, and the supply chains that will be necessary for successful commercial implementation.","PeriodicalId":443,"journal":{"name":"Water Research","volume":"2 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143027101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Distribution, removal and potential factors affecting antibiotics occurrence in leachate from municipal solid waste incineration plants in China","authors":"Xuan Rui, Huabo Gong, Jinwen Hu, Haiping Yuan, Yawei Wang, Lixia Yang, Nanwen Zhu","doi":"10.1016/j.watres.2025.123187","DOIUrl":"https://doi.org/10.1016/j.watres.2025.123187","url":null,"abstract":"Leachate from municipal solid waste (MSW) incineration harbors a plethora of contaminants, including antibiotics and antibiotic resistance genes (ARGs). However, the understanding of such leachate is markedly scant in comparison to that of landfill leachate. In this study, the distribution and removal of 8 sulfonamides (SAs), 4 quinolones (FQs), and 4 macrolides (MLs) antibiotics in leachate from 14 MSW incineration plants in representative cities across different regions of China were investigated. In addition, potential factors affecting the contamination levels of antibiotics and ARGs in fresh leachate were evaluated. The results showed that the total concentration of target antibiotics in fresh leachate ranged from 4406.1 to 14930.6 ng/L. Notably, the antibiotic distribution in leachate exhibited regional disparities, influenced by economic status, climatic conditions, and waste separation policies. The absolute abundance of total ARGs ranged from 1.3 × 10<sup>7</sup>-4.0 × 10<sup>8</sup> copies/mL, with the mobile genetic elements <em>intl1</em> facilitates the dissemination of <em>qnrS, sul1</em> and <em>sul2.</em> No distinct regional distribution of the ARGs was observed among different cities. Antibiotic and ARGs distributions were significantly correlated with total organic carbon, pH, ammonia nitrogen, heavy metals, and microbial communities. Moreover, SAs were identified as contributors to the proliferation and spread of corresponding ARGs. Fourteen typical \"anaerobic-anoxic/aerobic-anoxic/aerobic-ultrafiltration-nanofiltration \" treatment processes removed the target antibiotics effectively (76.1%-97.0%). Biodegradation was considered to be the dominant antibiotic removal pathway, removing 62.0%-90.9% of antibiotics, while sludge adsorption removed only 1.0%-11.7%. This research furnishes valuable insights into the fate of antibiotics in MSW incineration leachate.","PeriodicalId":443,"journal":{"name":"Water Research","volume":"74 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143026841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Roles and opportunities of quorum sensing in natural and engineered anaerobic digestion systems","authors":"Xuran Liu, Jianying Luo, Qing Xu, Qi Lu, Bing-jie Ni, Dongbo Wang","doi":"10.1016/j.watres.2025.123190","DOIUrl":"https://doi.org/10.1016/j.watres.2025.123190","url":null,"abstract":"Anaerobic digestion (AD) is a biological process in which anaerobic microorganisms convert organic matter into methane-rich gas, contributing to the cycling of carbon and other nutrients. Quorum sensing (QS), a microbial communication mechanism, plays a critical role in regulating population-level behaviors within AD systems. This review systematically examines the roles and applications of QS in AD, emphasizing its importance in enhancing process efficiency. The review begins by exploring the pathways and characteristics of QS in key functional microorganisms involved in AD. We analyze the response mechanisms of QS to key environmental variables and their effects on the structure and function of microbe communities and extracellular polymeric substances secretion. Potential applications of QS in engineered AD systems are discussed, with a focus on promoting system startup, improving operational efficiency, and enhancing resistance and stability. The use of exogenous signaling molecules and quorum quenching reagents to optimize AD performance is also evaluated. Additionally, the ecological significance of QS in natural environments, such as seafloor sediments and wetlands, is explored, emphasizing its role in regulating AD-related microorganisms within complex microbial communities. Finally, the review identifies current knowledge gaps and outlines future research directions in AD, including QS database development, QS-engineered bacteria excavation, and advanced analytical methods assistants. This comprehensive review aims to bridge existing gaps in QS-related knowledge in AD and provide fresh perspectives for studying microbial communication and collaboration through QS.","PeriodicalId":443,"journal":{"name":"Water Research","volume":"32 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143020233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Water ResearchPub Date : 2025-01-22DOI: 10.1016/j.watres.2025.123134
Axumawit Tequam Tesfamariam, Elisangela Heiderscheidt, Markus Sunela, Arttu Pitkänen, Lauri Rantala, Pekka M. Rossi
{"title":"Corrigendum to “The estimation of infiltration and inflow in a sewage network by combining continuous monitoring of hydrological parameters, flow and temperature with stable isotopes of oxygen and hydrogen” [Water Research 255 (2024) 121505]","authors":"Axumawit Tequam Tesfamariam, Elisangela Heiderscheidt, Markus Sunela, Arttu Pitkänen, Lauri Rantala, Pekka M. Rossi","doi":"10.1016/j.watres.2025.123134","DOIUrl":"https://doi.org/10.1016/j.watres.2025.123134","url":null,"abstract":"The authors regret < In March, the mean δ<sup>18</sup>O isotopic signal of groundwater was -13.16 ‰, while in May it was -13.10 ‰. The drinking water, on the other hand, had more <strong><em>depleted</em></strong> signals of -11.53 ‰ in March and -12.26 ‰ in May. >.","PeriodicalId":443,"journal":{"name":"Water Research","volume":"45 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Water ResearchPub Date : 2025-01-22DOI: 10.1016/j.watres.2025.123188
Yalan Gan, Futoshi Kurisu, Dai Simazaki, Mitsunori Yoshida, Hanako Fukano, Takeshi Komine, Hiromi Nagashima, Yoshihiko Hoshino, Ikuro Kasuga
{"title":"Unveiling Significant Regrowth and Potential Risk of Nontuberculous Mycobacteria in Hospital Water Supply System","authors":"Yalan Gan, Futoshi Kurisu, Dai Simazaki, Mitsunori Yoshida, Hanako Fukano, Takeshi Komine, Hiromi Nagashima, Yoshihiko Hoshino, Ikuro Kasuga","doi":"10.1016/j.watres.2025.123188","DOIUrl":"https://doi.org/10.1016/j.watres.2025.123188","url":null,"abstract":"The health burden of waterborne nontuberculous mycobacteria (NTM) is a rising concern. While the water supply systems can serve as a potential reservoir for NTM, their abundance, diversity, and transmission pathways remain unknown. This study aimed to characterize the prevalence and regrowth of NTM in building water supply system in a hospital where many <em>M. abscessus</em> were isolated from patients. The depletion of residual chlorine after stagnation and supply of warm water at the point of use promoted significant microbial regrowth, including NTM, in the hospital. The absolute abundance of <em>Mycobacterium</em> spp. 16S rRNA genes in tap water and shower water samples increased to approximately 10<sup>4</sup> copies/mL, while it was below the quantification limit in the finished water from a drinking water treatment plant. Amplicon sequencing of NTM-specific <em>hsp</em>65 genes revealed that <em>M. abscessus</em> was prevalent in all samples, while the dominant NTM species varied depending on locations even in the same building. The presence of <em>M. abscessus</em> in water suggested the possibility of waterborne transmission in the hospital. <em>M. abscessus</em> was frequently isolated from tap water, shower water, and shower biofilms. These isolates demonstrated high clonality and were closely affiliated with the ABS-GL4 cluster of <em>M. abscessus</em> subsp. <em>abscessus</em>. Even though the automatic mixing equipment at the point of use was replaced with new one, the settlement and growth of NTM were reproducibly observed, suggesting mixing equipment as a hotspot for NTM proliferation. Additional interventions including water quality control are required as the hospital water supply system is a hot spot for NTM regrowth.","PeriodicalId":443,"journal":{"name":"Water Research","volume":"120 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Highly Efficient Removal of Per- and Polyfluoroalkyl Substances by Extrusion-regenerated Aminated Polyurethane Sponges","authors":"Xinhao Wang, Hanyang Chen, Wenran Wang, Xiufang Shen, Jiabao Wang, Sen Chen, Xueru Yu, Chew Tin Lee, Zhanghao Chen, Cheng Gu","doi":"10.1016/j.watres.2025.123189","DOIUrl":"https://doi.org/10.1016/j.watres.2025.123189","url":null,"abstract":"Per- and polyfluoroalkyl substances (PFAS) are a class of persistent organic compounds widely detected in the environments. Due to their chemical stability, physical adsorption has emerged as one of the most promising techniques for remediating PFAS-containing wastewater, while some newly synthesized functional absorbents in powder form suffer from separation issues. Inspired by mussel biology, we have successfully synthesized a porous spongy absorbent termed aminated polyurethane (PU-PDA-PANI) with over 99.5% removal efficiency for initial 10 mg L<sup>−1</sup> perfluorooctanoic acid (PFOA), corresponding to the maximum adsorption capacity of 1.42 g g<sup>−1</sup>, which was superior to the ion exchange resin (Purolite® PFA694E, 0.764 g g<sup>−1</sup>). In addition to PFOA, PU-PDA-PANI also showed excellent removal efficiencies for other typical PFAS (i.e. perfluorooctane sulfonates, perfluorobutyric acid, perfluorooctane-1,8-dioic acid, hexafluoropropylene oxide trimer acid, etc), and the adsorption processes resistant to pH changes and co-existing environmental matrixes. Furthermore, PU-PDA-PANI can be readily reused and regenerated by coupling extrusion and elution procedures. The adsorption mechanism of electrostatic, hydrogen bond and hydrophobic synergistic interaction was further proposed with the support of theoretical calculation. In conclusion, this study develops an efficient and recyclable PFAS adsorbent and proposes some new insights for the design of PFAS-selective adsorbents.","PeriodicalId":443,"journal":{"name":"Water Research","volume":"27 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143020236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Metagenomic and enzymatic mechanisms underpinning efficient water treatment of 2-ethylhexyl diphenyl phosphate (EHDPP) by the microbial consortium 8-ZY","authors":"Yuanyuan Yu, Wantang Huang, Shaoyu Tang, Ying Xiang, Lizhu Yuan, Xifen Zhu, Hua Yin, Zhi Dang, Junfeng Niu","doi":"10.1016/j.watres.2025.123178","DOIUrl":"https://doi.org/10.1016/j.watres.2025.123178","url":null,"abstract":"The ubiquitous presence, potential toxicity, and persistence of 2-ethylhexyl diphenyl phosphate (EHDPP) in the environment have raised significant concerns. In this study, we successfully isolate a novel microbial consortium, named 8-ZY, and we demonstrate its remarkable ability to degrade EHDPP using an extremely low concentration of the inoculate. A total of 11 degradation metabolites were identified, including hydrolysis, hydroxylated, methylated, glucuronide-conjugated, and previously unreported byproducts, enabling us to propose new transformation pathways. Further, we unveiled the active members of the microbial consortium 8-ZY during the degradation of EHDPP. We observed the presence of diverse active populations, which included <em>Bradyrhizobium, Rhodopseudomonas, Sphingomonas, Hyphomicrobium, Chitinophaga, Aminobacter</em>, and <em>Ralstonia</em>. A metagenomic analysis revealed the presence of genes that encode phosphatase, phosphodiesterase, cytochrome P450, and hydroxylase enzymes, thus indicating their crucial role in EHDPP degradation. Furthermore, we successfully isolated <em>Burkholderia cepacia</em> ZY1, <em>Sphingopyxis terrae</em> ZY2, and <em>Amycolatopsis</em> ZY3 from the 8-ZY consortium, confirming their significance in EHDPP degradation and metabolite formation. These findings underscored the diversity of strains and functional genes responsible for the transformation of EHDPP within the consortium 8-ZY, highlighting the essential role of synergistic interactions during EHDPP biodegradation processes. Molecular docking and dynamics simulation suggested that alkaline phosphatase, cytochrome P450, and hydroxylase stably bonded to EHDPP within their respective active pockets, targeting distinct sites on the EHDPP molecule. These findings provide a comprehensive understanding of the transformation mechanisms of OPEs and contribute valuable insights into their fate in the environment.","PeriodicalId":443,"journal":{"name":"Water Research","volume":"145 4 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Water ResearchPub Date : 2025-01-21DOI: 10.1016/j.watres.2024.123042
Sallamaari Siponen, Balamuralikrishna Jayaprakash, Anna-Maria Hokajärvi, Vicente Gomez-Alvarez, Jenni Inkinen, Ivan Ryzhikov, Pia Räsänen, Jenni Ikonen, Anna Pursiainen, Ari Kauppinen, Mikko Kolehmainen, Jussi Paananen, Eila Torvinen, Ilkka T. Miettinen, Tarja Pitkänen
{"title":"Corrigendum to “Composition of active bacterial communities and presence of opportunistic pathogens in disinfected and non-disinfected drinking water distribution systems in Finland” [Water Research, Volume 248 (2024) 120858]","authors":"Sallamaari Siponen, Balamuralikrishna Jayaprakash, Anna-Maria Hokajärvi, Vicente Gomez-Alvarez, Jenni Inkinen, Ivan Ryzhikov, Pia Räsänen, Jenni Ikonen, Anna Pursiainen, Ari Kauppinen, Mikko Kolehmainen, Jussi Paananen, Eila Torvinen, Ilkka T. Miettinen, Tarja Pitkänen","doi":"10.1016/j.watres.2024.123042","DOIUrl":"https://doi.org/10.1016/j.watres.2024.123042","url":null,"abstract":"The authors regret incorrect gene copy numbers of opportunistic pathogens in chapter 3.2 and an incorrect sample volume in chapter 3.3. The conclusions and figures in the article are correct. Also, authors noticed errors in the significance of <em>Pseudomonas</em> gene copy number results. The corrected text is below. The authors would like to apologise for any inconvenience caused.","PeriodicalId":443,"journal":{"name":"Water Research","volume":"57 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142991011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Water ResearchPub Date : 2025-01-21DOI: 10.1016/j.watres.2025.123170
Jialong Qin, Hengzhi Liu, Zhuoya Fang, Junjun Pei, Kai Yin, Kaixing Fu, Jinming Luo
{"title":"Selective Gold Extraction from E-waste Leachate via Sulfur-Redox Mechanisms Using Sulfhydryl-Functionalized MOFs","authors":"Jialong Qin, Hengzhi Liu, Zhuoya Fang, Junjun Pei, Kai Yin, Kaixing Fu, Jinming Luo","doi":"10.1016/j.watres.2025.123170","DOIUrl":"https://doi.org/10.1016/j.watres.2025.123170","url":null,"abstract":"Urban mining of precious metals from electronic waste (e-waste) offers a dual advantage by addressing solid waste management challenges and supplying high-value metals for diverse applications. However, traditional extraction methods generally suffer from poor selectivity and limited capacity in complex acidic leachate. Herein, we present a sulfhydryl-functionalized zirconium-based metal-organic framework (Zr-MSA-AA) as a recyclable and highly selective adsorbent for efficient gold recovery. Specifically, the Zr-MSA-AA exhibits high recovery capacity (1021 mg g<sup>-1</sup>), remarkable pH-universal, and superb selectivity (K<sub>d</sub> of 2.2 × 10<sup>7</sup> mL g<sup>-1</sup>) for gold ions across wide pH range and competitive conditions. Comprehensive mechanistic investigations highlight the pivotal role of sulfhydryl groups in selectively capturing gold ions. The redox-transformation of sulfhydryl and sulfonic acid groups mediated the reduction of Au(III) to Au(0) through the nucleation of chlorine-stabilized gold clusters. This unique mechanism, driven by the redox activity of designed sulfhydryl sites, not only mitigates interference from competing cations but also facilitates rapid adsorption kinetics (k<sub>f</sub> of 1.17 × 10<sup>-7</sup> m s<sup>-1</sup>) for gold ions, surpassing the performance of previous adsorbents. Consequently, Zr-MSA-AA demonstrates exceptional practical applicability, achieving high-purity gold recovery (23.8 Karat) from real e-waste leachate through straightforward physical separation methods. This study introduces an alternative practical strategy for utilizing sulfur's redox activity in adsorbent design, advancing the sustainable recycling of non-renewable metal resources while contributing to environmental conservation.","PeriodicalId":443,"journal":{"name":"Water Research","volume":"15 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142990778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Vacuum UV-based processes for water and wastewater purification: From unitary to multicomponent systems","authors":"Chuang Wang, Xiaohui Wang, Jinying Du, Renjian Deng, Bozhi Ren, Saijun Zhou, Baolin Hou, Yaoyao huang, Zhiwei Zhao","doi":"10.1016/j.watres.2025.123175","DOIUrl":"https://doi.org/10.1016/j.watres.2025.123175","url":null,"abstract":"Vacuum ultraviolet (VUV) is profitable to strengthen the efficiencies of UV and reduce chemicals use, attracting more attention to water and wastewater purification. Herein, VUV-based water treatment processes from unitary VUV to multicomponent systems were reviewed for the first time to promote VUV applications. The rate of pollutant removal by unitary VUV was 1.3-57 times that of UV, in which hydroxyl radical oxidation was dominant. And the reducibility of hydrated electron and hydrogen atom radical in unitary VUV dehalogenated organics and reduced metal ions. Besides, VUV-based binary systems mainly included processes of VUV/H<sub>2</sub>O<sub>2</sub>, VUV/persulfate, VUV/ozone, VUV/chlorine, VUV/sulfite, VUV/iron ion, and VUV-based heterogeneous oxidation. VUV-based ternary systems basically contained three types: VUV-based Fenton-like, VUV coupling dual oxidants, and VUV combined with other technologies activating oxidants. Performance, characteristics, reactive species, and mechanisms of VUV-based binary and ternary systems were summarized. Moreover, the characterization, contribution, and role of reactive species in VUV-based processes were analyzed, and the combination of multiple methods was conducive to accurately identifying the mechanism of reactive species. Furthermore, the combination of VUV and other technologies expanded the application potential of VUV. Compared to UV-based processes, VUV-based processes significantly reduced energy consumption and were more promising in removing contaminants in actual waters. Finally, hot spots and directions (develop new techniques, reduce by-products, combine simulation and experiment, broaden removal objects, enhance pilot studies) of VUV-based water treatment technologies in future were prospected. Overall, VUV-based advanced oxidation processes are expected to be used in water treatment to improve process efficiency.","PeriodicalId":443,"journal":{"name":"Water Research","volume":"62 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}