Contributions of Thermotolerant Bacteria to Organic Matter Degradation under a Hyperthermophilic Pretreatment Process during Chicken Manure Composting
文献类型： 外文期刊
作者： Cao, Yun 1 ; Wang, Lin 1 ; Qian, Yuting 1 ; Xu, Yueding 1 ; Wu, Huashan 1 ; Zhang, Jing 1 ; Huang, Hongying 1 ; Chang, Zh 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Circular Agr Res Ctr, Nanjing 210014, Jiangsu, Peoples R China
2.Minist Agr, Key Lab Crop & Livestock Integrated Farming, Nanjing 210014, Jiangsu, Peoples R China
3.Jiangsu Collaborat Innovat Ctr Solid Organ Waste, Nanjing 210014, Jiangsu, Peoples R China
4.Nanjing Inst Agr Sci Jiangsu Hilly Area, Nanjing 210046, Jiangsu, Peoples R China
关键词： Hyperthermophilic pretreatment; Animal manure waste; Nitrogen retention; Thermotolerant bacteria; Microbial community
期刊名称：BIORESOURCES （ 影响因子：1.614； 五年影响因子：1.923 ）
ISSN： 1930-2126
年卷期： 2019 年 14 卷 3 期
页码：
收录情况： SCI
摘要： Composting technology comprising hyperthermophilic pretreatment (at >= 85 degrees C for 2 to 4 h, HTPRT) and aerobic composting was adopted to accelerate organic matter transformation and enhance nitrogen retention in chicken manure composting. The differences in physio-chemical parameters, successions, and metabolism functions of the bacterial community between HTPRT (85 degrees C, 4 h) and conventional composting (CK) were compared. The HTPRT composting system reached maturity 18 days in advance of CK. The HTPRT piles showed a lower maximum N loss (27.1% vs. 39.0%). The bacterial structure in the HTPRT system differed remarkably from that in CK. Ureibacillus (22.7%) and Ammoniibacillus (14.1%) were the most predominant species in the thermophilic phase of HTPRT pile, while the curing phase was dominated by Thermobifida (12.8%) and Saccharomonospora (11.8%). The authors' results suggest that HTPRT improved the physical properties of the feedstock by reducing the bulk density, which favored microbiological activity, and thus improving composting efficiency.
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