title: Improved fermentation performance in an expanded ectopic fermentation system inoculated with thermophilic bacteria.
abstract: Previous research showed that ectopic fermentation system (EFS) inoculated with thermophilic bacteria is an excellent alternative for cow wastewater treatment. In this study, the effects of thermophilic bacterial consortium on the efficiency and quality of the fermentation process in EFS were evaluated by measuring physicochemical and environmental factors and the changes in organic matter composition. In parallel, the microbial communities correlated with fermentation performance were identified. Inoculation of EFS with thermophilic bacterial consortium led to higher temperatures, increased wastewater requirements for continuous fermentation, and improved quality of the litters in terms of physicochemical factors, security test, functional group analysis, and bacterial community composition. The relationship between the transformation of organic component and the dominant bacteria species indicated that environmental factors contributed to strain growth, which subsequently promoted the fermentation process. The results highlight the great potential of EFS model for wide application in cow wastewater treatment and re-utilization as bio-fertilizer.
authors.affiliation: College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Guo
authors.affiliation: Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China.
authors.forename: Changxiong
authors.initials: C
authors.lastname: Zhu
authors.affiliation: Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China.
authors.forename: Bing
authors.initials: B
authors.lastname: Geng
authors.affiliation: Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China.
authors.forename: Xue
authors.initials: X
authors.lastname: Liu
authors.affiliation: Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Ye
authors.affiliation: Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China.
authors.forename: Yunlong
authors.initials: Y
authors.lastname: Tian
authors.affiliation: College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China. Electronic address: bjfu220@163.com.
authors.forename: Xiawei
authors.initials: X
authors.lastname: Peng
mesh_terms: D000818:Animals; D001105:Archaea; D019149:Bioreactors / Q000382:microbiology*; D002417:Cattle; D005260:Female; D005285:Fermentation; D008372:Manure; D062065:Wastewater; D018508:Water Purification / Q000379:methods*
chemical_list: D008372:Manure; D062065:Wastewater
keywords: Cow wastewater; Ectopic fermentation system; T-RFLP; Thermophilic bacterial consortium