New insights into different surfactants’impacts on sludge fermentation:Focusing on the particular metabolic processes and microbial genetic traits

作     者：Jingyang Luo Shiyu Fang Wenxuan Huang Feng Wang Le Zhang Fang Fang Jiashun Cao Yang Wu Dongbo Wang Jingyang Luo;Shiyu Fang;Wenxuan Huang;Feng Wang;Le Zhang;Fang Fang;Jiashun Cao;Yang Wu;Dongbo Wang

作者机构：Key Laboratory of Integrated Regulation and Resource Development on Shallow LakesMinistry of EducationHohai UniversityNanjing 210098China College of EnvironmentHohai UniversityNanjing 210098China State Key Laboratory of Pollution Control and Resource ReuseSchool of Environmental Science and EngineeringTongji UniversityShanghai 200092China College of Environmental Science and EngineeringHunan UniversityChangsha 410082China 

出 版 物：《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿（英文）)

年 卷 期：2022年第16卷第8期

页      面：221-234页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：The work is financially supported by the National Natural Science Foundation of China(Grant No.52070069) Fundamental Research Funds for the Central Universities(China)(No.B200202099) Jiangsu Province Natural Science Foundation(China)(BK20211207) Shanghai Post-doctoral Excellence Program(China)(No.2020419) China Postdoctoral Science Foundation(No.2021M692423) the State Key Laboratory of Pollution Control and Resource Reuse Foundation(China)(No.PCRRF20005) 

主　　题：Waste activated sludge(WAS) Volatile fatty acids(VFA) Surfactant types Functional microorganisms Metabolic activity upregulation 

摘      要：Surfactants were expected to exhibit positive effects on the waste activated sludge(WAS)***,the systematic comparison of different categories of surfactants on the WAS fermentation and the functional mechanisms,especially microbial metabolic traits,have not yet been precisely *** study revealed the positive effects of different surfactants on the volatile fatty acid(VFA)production,which followed the order of alkyl polysaccharides(APG)sodium dodecylbenzene sulfonate(SDBS)hexadecyl trimethyl ammonium bromide(HTAB).Mechanistic exploration found that the presence of different surfactants improved solubilization and hydrolysis steps,and then contributed to the subsequent acidification with different *** functional microorganisms associated with VFA generation were enriched in surfactant-conditioned *** analysis further indicated that the key genes involved in the particular process of VFA generation were *** simultaneous bioavailable substrate improvement,functional bacterial enrichment,and metabolic activity upregulation induced by different surfactants jointly contributed to VFA promotion during WAS *** study could provide a comprehensive realization of surfactants’impacts on theWAS fermentation process,and more importantly,it reminded the public to discern the distinct interplaying effects induced by different chemicals in regulating the WAS disposal and resource recovery.