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

第一作者： Cao, Yun

作者： Cao, Yun;Wang, Lin;Qian, Yuting;Xu, Yueding;Wu, Huashan;Zhang, Jing;Huang, Hongying;Chang, Zhizhou;Cao, Yun;Xu, Yueding;Wu, Huashan;Zhang, Jing;Huang, Hongying;Chang, Zhizhou;Cao, Yun;Xu, Yueding;Wu, Huashan;Zhang, Jing;Huang, Hongying;Chang, Zhizhou;Wang, Lin

作者机构：

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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