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Roles of bacterial community in the transformation of organic nitrogen toward enhanced bioavailability during composting with different wastes

文献类型： 外文期刊

作者： Zhu, Longji 1 ; Zhao, Yue 1 ; Zhang, Wenshuai 1 ; Zhou, Haixuan 1 ; Chen, Xiaomeng 1 ; Li, Yingjun 2 ; Wei, Dan 3 ; Wei, 1 ;

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

2.Beijing Vocat Coll Agr, Beijing 100012, Peoples R China

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

关键词： Waste; Bioavailable organic-N; Bacterial community; Composting; Molecular weight; Transformation

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 285 卷

页码：

收录情况： SCI

摘要： This study aimed to explore the roles of bacterial community in the transformation of bioavailable organic-N (BON) during different wastes composting. BON fractions with different forms and molecular weights were identified in this study. Results indicated that core bacterial communities improved the availability of BON by degrading high molecular weights BON into low molecular weights BON during different wastes composting. A total of fifty-two core bacterial genera involved in BON transformation were identified by network analysis. Three types of high molecular weights BON fractions (amino acid-N, amine-N and amino sugar-N) were degraded by bacteria during chicken manure and garden waste composting, while only amine-N was degraded during municipal solid waste composting. Finally, moisture, C/N and pH were identified as the key operational parameters affecting BON transformation mediated by microorganisms, which can be used to improve bioavailability of organic-N and reduce N loss during composting.

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