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Potential of biochar integrated manganese sulfate for promoting pig manure compost humification and its biological mechanism

文献类型： 外文期刊

作者： Zhao, Xinyu 1 ; Xu, Kaili 1 ; Wang, Jingwen 1 ; Wang, Ziqi 1 ; Pan, Ruokun 1 ; Wang, Quan 1 ; Li, Songling 2 ; Kumar, Sunil 3 ; Zhang, Zengqiang 1 ; Li, Ronghua 1 ;

作者机构： 1.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Peoples R China

2.Qinghai Univ, Qinghai Acad Agr & Forestry Sci, Qinghai 810016, Peoples R China

3.Council Sci & Ind Res India, Solid & Hazardous Waste Management Div, Natl Environm Engn Res Inst, Nehru Marg, Nagpur 440020, India

关键词： Compost humification; Biochar; Manganese sulfate; Microbial community; Biological mechanisms

期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：11.889； 五年影响因子：11.139 ）

ISSN： 0960-8524

年卷期： 2022 年 357 卷

页码：

收录情况： SCI

摘要： This study aimed to clarify the effect of the integrated addition of different proportions of biochar (0 and 5%) and MnSO4 (0, 0.25%, and 0.50%) to pig manure compost. The results indicated the integrated use of biochar (BC) and Mn2+ advanced the compost humification. In particular, the integrated use of 0.50% Mn2+ and 5% BC showed higher total organic carbon degradation (20.67%) and humic acid production (81.26 g kg-1) than other treatments. Microbial community analysis showed the integrated use of BC and Mn2+ regulated the diversity and community structure of organic matter-mineralizing microbes by maintaining the relative abundance of bacteria Firmicutes (54.62%) and Proteobacteria (38.05%) at high levels during the thermophilic period and boosting those of the fungi of Ascomycota (58.91%) and Actinobacteria (15.60%) during the maturity period of composting. This study illustrated the potential and biological mechanisms of integrating BC and Mn2+ as additives in compost humification.

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