Effects of microbial agents on nitrogen conversion and bacterial succession during pig manure composting
文献类型： 外文期刊
作者： Liu, Xiaoling 1 ; Sun, Xia 1 ; Li, Ji 2 ; Yan, Xiaoming 1 ; Wei, Yuquan 2 ; Zheng, Shufeng 1 ; Chen, Min 1 ; Kan, Huachun 1 ; Wang, Wei 1 ; Li, Shuying 1 ; Xu, Daoqing 1 ;
作者机构： 1.Anhui Acad Agr Sci, Cotton Res Inst, Hefei 230001, Anhui, Peoples R China
2.China Agr Univ, Coll Resources & Environm Sci, Beijing 100091, Peoples R China
关键词： Microbial agents; Nitrogen transformation; Bacterial community structure; Pig manure; Composting
期刊名称：PROCESS BIOCHEMISTRY （ 影响因子：4.4； 五年影响因子：4.2 ）
ISSN： 1359-5113
年卷期： 2023 年 134 卷
页码：
收录情况： SCI
摘要： Aerobic composting can recycle nutrients from animal manure. Adding microorganism inoculants is an effective way to accelerate composting process. The study aimed to evaluate effects of inoculating with microbial agents on nitrogen conversion and bacterial community succession in pig manure composting. 3 composting treatments were conducted including no microbial inoculant (CK), inoculating thermophilic degrading bacteria (T1), and compound commercial microbial agents (T2). The results showed that T1 advanced the time for entering the thermophilic stage (>50 degree celsius), and accelerated organic matter degradation. T1 produced more NH3 than other treatments. TN in group T1 and T2 was significantly greater than CK in composting maturity stage (after 14-15 d, T <= 40 degree celsius). (Final C/N)/(Initial C/N) of group T1 and T2 was 0.66, 0.65, and GI was 90.7 and 87.6, respectively. T1 improved the relative abundance of Actinobacteria, Firmicutes, Proteobacteria at the phylum level and increased Bacillus genera at genus level during the composting process. In conclusion, we demonstrated that pig manure composting added to thermophilic degrading bacteria effectively improved the quality of compost.
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