Biodrying of biogas residue through a thermophilic bacterial agent inoculation: Insights into dewatering contribution and microbial mechanism
文献类型： 外文期刊
作者： Xu, Mingyue 1 ; Sun, Haishu 1 ; Yang, Min 1 ; Xie, Dong 1 ; Sun, Xiaohong 2 ; Meng, Jie 1 ; Wang, Qunhui 1 ; Wu, Chuanfu 1 ;
作者机构： 1.Univ Sci & Technol Beijing, Sch Energy & Environm Engn, Dept Environm Sci & Engn, 30 Xueyuan Rd, Beijing 100083, Peoples R China
2.Beijing Acad Agr & Forestry Sci, Beijing Agrobiotechnol Res Ctr, Beijing 100097, Peoples R China
3.Univ Sci & Technol Beijing, Beijing Key Lab Resource oriented Treatment Ind Po, 30 Xueyuan Rd, Beijing 100083, Peoples R China
关键词： Biogas residue; Biodrying; Thermophilic bacterial agent; Dewatering contribution; Microbial community
期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：11.889； 五年影响因子：11.139 ）
ISSN： 0960-8524
年卷期： 2022 年 355 卷
页码：
收录情况： SCI
摘要： Biogas residue (BR) is difficult to transport and compost due to its high moisture content. The purpose of this study was to elucidate the dewatering and microbial mechanisms underlying the inoculation of a thermophilic bacterial agent (TBA) onto BR with a high moisture content (i.e., 90.4%). TBA accounted for 78.7% of the water loss rate in BR, dramatically higher than the effects of aeration, external heat, or indigenous microorganisms (i.e., 1.8%, 0.1%, and 19.4%, respectively). Furthermore, TBA inoculation resulted in a stable product [with a low moisture content (9.4%) and a high seed germination index (107.3%)]. Finally, TBA increased microbial diversity and the abundance of functional bacteria (Proteobacteria and Bacteroidota), which might be beneficial for refractory organic compound decomposition and plant growth. Thus, biodrying BR via inoculation with a TBA is recommended economically.
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