期刊
BIORESOURCE TECHNOLOGY
卷 272, 期 -, 页码 521-528出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.10.070
关键词
Hyperthermophilic pretreatment composting (HPC); N retention; Ammonification rate; Enzyme activities; Microbial communities
资金
- National Key Research and Development Program of China [2017YFD0801403]
- China Postdoctoral Science Foundation [2017M621666]
- National Natural Science Foundation of China [21808093, 41807132]
- Natural Science Foundation of Jiangsu Province [BK20170113]
- Jiangsu Agriculture Science and Technology Innovation Fund [CX(16)1003-1]
Hyperthermophilic pretreatment composting (HPC) is superior to traditional composting (TC) with shortened maturity period and increased nitrogen (N) retention. However, the mechanism associated with N retention in HPC remains unclear. In this study, we compared the impact of HPC and TC on N retention, and found the proportion of N retained in the final compost was 83.3% and 67.2% for HPC and TC, respectively. Decreased ammonification rate, urease and protease activities together with an elevated temperature were found in HPC. Illumina amplicon sequencing showed that HPC caused a major decline in microbial community richness and diversity in the thermophilic phase. Notably, bacterial (Pseudomonas and Bacillus) and fungal ammonifiers (Acremonium, Alternaria and Penicillium) decreased remarkably in HPC during this phase. Changes in the microbial community could be related to unfavorable modifications of environment from HPC, and which resulted in decreased ammonification and enzyme activities and improved N retention.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据