环境科学与技术最新文献_第5页

IF 10.8 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-07-29

Siyi Wang, Min Nian, Yu Ma, Xiaojia Chen, Xiaotong Ji, Changzhi Shi, Xing Chen* and Mingliang Fang*,

引用次数: 0

Dehalobacter Dechlorinates Dichloroanilines and Contributes to the Natural Attenuation of Dichloronitrobenzenes at a Complex Industrial Site. 脱氯杆菌使二氯苯胺脱氯，并有助于在一个复杂的工业场所自然衰减二氯硝基苯。

IF 11.3 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-07-29 Epub Date: 2025-07-14 DOI: 10.1021/acs.est.5c04189

Sofia P Araújo, Line Lomheim, Suzana P Q Kraus, Elizabeth Erin Mack, Jim C Spain, Sávia Gavazza, Elizabeth A Edwards

{"title":"Dehalobacter Dechlorinates Dichloroanilines and Contributes to the Natural Attenuation of Dichloronitrobenzenes at a Complex Industrial Site.","authors":"Sofia P Araújo, Line Lomheim, Suzana P Q Kraus, Elizabeth Erin Mack, Jim C Spain, Sávia Gavazza, Elizabeth A Edwards","doi":"10.1021/acs.est.5c04189","DOIUrl":"10.1021/acs.est.5c04189","url":null,"abstract":"The potential for bioremediation of dichloroanilines (2,3- and 3,4-DCA) and dichloronitrobenzenes (3,4-, 2,5-, and 2,3-DCNB) was investigated using inocula from an industrial site in the northeast of Brazil. Anaerobic biotransformation of these chlorinated compounds was observed in microcosms simulating site conditions, particularly when an electron donor was added. To disentangle specific transformation reactions, subcultures from active anaerobic microcosms were enriched with individual DCA or DCNB isomers. In these single-compound enrichment cultures, DCNB isomers were reduced to the corresponding DCA. Each DCA isomer was stoichiometrically dechlorinated to the corresponding monochloroaniline (CA) isomers. Further dechlorination of CA to aniline was noted. The reduction of DCNB to DCA was sustained by known fermenters and possibly Desulfitobacterium, while Dehalobacter was clearly responsible for the dechlorination of DCAs. These findings helped attribute function to the microbial community data retrieved from field samples to improve the conceptual site model and enable the identification of bioactive zones and rate-limiting conditions at a complex site. More generally, these data broaden the understanding of the metabolic repertoire of Dehalobacter and provide a model for incorporating microbial community data into site remediation efforts.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":" ","pages":"15251-15260"},"PeriodicalIF":11.3,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144635726","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}

引用次数: 0

Enrichment and Kinetic Profiling of Candidatus Nitrospira nitrosa Culture Reveal Mechanisms Underlying Its Prevalence in Wastewater Treatment Systems. 硝化螺旋菌培养的富集和动力学分析揭示了其在废水处理系统中流行的机制。

IF 11.3 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-07-29 Epub Date: 2025-07-16 DOI: 10.1021/acs.est.5c04519

Jiaying Hou, Ying Zhu, Yuanji Shi, Limin Lin, Fangang Meng, Meiying Xu, Linyan Yang, Bing-Jie Ni, Xueming Chen

{"title":"Enrichment and Kinetic Profiling of Candidatus Nitrospira nitrosa Culture Reveal Mechanisms Underlying Its Prevalence in Wastewater Treatment Systems.","authors":"Jiaying Hou, Ying Zhu, Yuanji Shi, Limin Lin, Fangang Meng, Meiying Xu, Linyan Yang, Bing-Jie Ni, Xueming Chen","doi":"10.1021/acs.est.5c04519","DOIUrl":"10.1021/acs.est.5c04519","url":null,"abstract":"The discovery of comammox bacteria has revolutionized our understanding of nitrification, challenging the conventional paradigm that this process is mediated by two distinct microbial groups. Although comammox bacteria, particularly Candidatus Nitrospira nitrosa, are prevalent with significant activities in wastewater treatment systems, their physiological and biochemical properties, particularly growth substrates-based kinetics, are yet to be fully disclosed. To this end, we first attempted to enrich Ca. N. nitrosa in a laboratory-scale continuous stirred tank reactor fed with mainstream-level ammonium. Following the 40 d operation, a suite of microbial analyses jointly confirmed the unprecedentedly rapid specific enrichment and absolute dominance of Ca. N. nitrosa with the entire gene repertoire needed for completing the full nitrification process in the sludge. Dedicated batch tests then revealed and validated the affinity constants of Ca. N. nitrosa for total ammonium, nitrite and oxygen (0.393 ± 0.058 mg-N/L, 0.365 ± 0.001 mg-N/L and 0.006 ± 0.001 mg-O2/L, respectively), demonstrating high affinities for substrates that could underpin its widely reported competitive presence and functionality in wastewater treatment systems. This work provides the first kinetic characterization of Ca. N. nitrosa, complementing the currently limited understanding of the comammox process while enabling a better evaluation of its important role in the nitrogen cycle across diverse environments.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":" ","pages":"15272-15281"},"PeriodicalIF":11.3,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144647980","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}

引用次数: 0

IF 10.8 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-07-29

Yinghao Cheng, Ying Wang*, Zihan Xu, Chenglian Feng, Zhaomin Dong, Wenhong Fan, Kenneth M. Y. Leung and Fengchang Wu,

引用次数: 0

IF 10.8 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-07-29

Xu Cheng, Lin Liu, Hong Guo, Lu Liu, Yu Wang, Jin Zhang, Junya Gao, Yan Yan, Jun An, Yafei Tan and Meian He*,

引用次数: 0

IF 10.8 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-07-29

Sarawut Sangkham*, Worradorn Phairuang, Nattapon Pansakun and Alex T. Ford,

引用次数: 0

IF 10.8 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-07-29

Mariam Ayad*, Christine M. Lee, James W. Porter, Ved Chirayath, Camilla L. Nivison, Kelsey M. Vaughn and Raphael Kudela,

引用次数: 0

IF 10.8 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-07-29

Kanying Miu, Yunxiang Meng, Yiqi Yan, Zongsu Wei, Jannis Wenk and Ruiyang Xiao*,

引用次数: 0

Regenerable Membrane Sensors for Ultrasensitive Nanoplastic Quantification Enabled by A Data-driven Raman Spectral Processing Algorithm. 基于数据驱动的拉曼光谱处理算法的超灵敏纳米塑料定量可再生膜传感器。

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-07-29 DOI: 10.1021/acs.est.5c05396

Ziyan Wu,Sarah E Janssen,Michael T Tate,Mohan Qin,Haoran Wei

{"title":"Regenerable Membrane Sensors for Ultrasensitive Nanoplastic Quantification Enabled by A Data-driven Raman Spectral Processing Algorithm.","authors":"Ziyan Wu,Sarah E Janssen,Michael T Tate,Mohan Qin,Haoran Wei","doi":"10.1021/acs.est.5c05396","DOIUrl":"https://doi.org/10.1021/acs.est.5c05396","url":null,"abstract":"The detection of nanoplastics (NPs) in complex natural water systems is hindered by matrix interferences and limitations in current analytical techniques. This study presents Pre_seg, a Raman spectral processing algorithm integrated with regenerable anodic aluminum oxide (AAO) membrane sensors, for ultrasensitive, rapid, and quantitative NP detection at the single-particle level. The AAO membranes function as both filtration substrates and Raman sensors, reducing sample loss and contamination. Pre_seg incorporates statistically determined thresholds for signal-to-noise ratios (SNRs) and full width at half maximums (fwhms) across segmented spectral ranges, effectively minimizing noise and enhancing accuracy and sensitivity of NP detection. Pre_seg achieved 93.5% prediction accuracy of NPs and ≥90.4% rejection accuracy for non-NP entries. Mixed NPs were quantified at the lowest concentration of 0.5 μg L-1. The robustness of Pre_seg was validated in eutrophic and oligotrophic lake matrices following oxidation digestion pretreatment to mitigate organic interferences. Furthermore, the AAO membrane sensors demonstrated stability through multiple regeneration and reuse cycles. This innovative approach advances NP detection by enabling scalable, customizable, and environmentally relevant monitoring.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"45 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144720160","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}

引用次数: 0

Rebuttal to Correspondence on "The Stockholm Convention at a Crossroads: Questionable Nominations and Inadequate Compliance Threaten Its Acceptance and Utility". 对关于“处于十字路口的斯德哥尔摩公约：可疑的提名和不充分的遵守威胁到公约的接受和效用”的信函的反驳。

IF 11.3 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-07-29 Epub Date: 2025-07-16 DOI: 10.1021/acs.est.5c08190

Frank Wania, Michael S McLachlan

引用次数: 0