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Driving effects of minerals on humic acid formation during chicken manure composting: Emphasis on the carrier role of bacterial community

文献类型: 外文期刊

作者: Yu, Huimin 1 ; Zhao, Yue 1 ; Zhang, Chuang 1 ; Wei, Dan 2 ; Wu, Junqiu 1 ; Zhao, Xinyu 3 ; Hao, Jingkun 1 ; Wei, Zimin 1 ;

作者机构: 1.Northeast Agr Univ, Coll Life Sci, Harbin 150030, Heilongjiang, Peoples R China

2.Beijing Acad Agr & Forestry Sci, Inst Plant Nutr & Resources, Beijing 100097, Peoples R China

3.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China

关键词: Composting; Biochar; Montmorillonite; Humic acid formation; Core bacterial community

期刊名称:BIORESOURCE TECHNOLOGY ( 影响因子:9.642; 五年影响因子:9.237 )

ISSN: 0960-8524

年卷期: 2019 年 294 卷

页码:

收录情况: SCI

摘要: This work was aimed to determine the effects of different minerals on humic acid (HA) formation. Minerals can stimulate the formation of complex compounds, however, whether they can promote the conversion of complex compounds to HA has not been verified. Four treatments were setup from chicken manure mixed with rice hull and then added biochar (BC), montmorillonite (MMT) and biochar combined with montmorillonite (BC-MMT) for composting, while the control check (CK) was composted without minerals. The results showed that HA concentration was increased by 28.09%, 40.79%, 45.39% and 38.96% during CK, BC, BC-MMT and MMT composting. However, the bacterial community was the main reason for affecting HA concentration. Network analysis showed that obligate and facultative core microbes drove HA formation, and these driving effects were affected by minerals. Therefore, the core bacterial community promoted HA formation, which provided an insightful method to improve HA production.

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