Solid digestate biochar amendment on pig manure composting: Nitrogen cycle and balance

文献类型： 外文期刊

第一作者： Wang, Jingwen

作者： Wang, Jingwen;Ma, Xuzhe;Chen, Xing;Liu, Tao;Wang, Quan;Zhang, Zengqiang;Li, Ronghua;Pan, Junting;Li, Songling;Wang, Quan;Zhang, Zengqiang;Li, Ronghua;Wang, Jim J.;Wei, Dan

作者机构：

关键词： Solid digestate biochar; Pig manure; Compost; NH3 loss; Nitrogen cycle

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 349 卷

页码：

收录情况： SCI

摘要： Effect of solid digestate biochar (DB) on nitrogen cycle and balance was evaluated during composting by adding DB into mixtures of pig manure and Lycium chinensis branch filings. Results indicated that DB addition improved composting microenvironment and increased the total N content of the final product. Furthermore, N balance calculation indicated that the NH3 and N2O emissions accounted for 72.14%-81.39% and 0.49%-2.37% of the total N loss without DB addition, respectively. After using DB, the N reductions in the form of NH3 and N2O reduced from 10.78% to < 5.73% and from 0.34% to < 0.041% of total N, respectively. Addition of DB affected N fixation with 92.32%-93.67% of total N fixed in the compost than that of the T1 treatment (85.63%). DB amendment enhanced the aerobic bacterial communities and hindered anaerobic bacterial growth, thus benefiting the NH3 and N2O emission mitigation and N conservation.

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