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The influences of inoculants from municipal sludge and solid waste on compost stability, maturity and enzyme activities during chicken manure composting

文献类型： 外文期刊

作者： Li, Shuyan 1 ; Li, Jijin 2 ; Yuan, Jing 1 ; Li, Guoxue 1 ; Zang, Bing 1 ; Li, Yangyang 1 ;

作者机构： 1.China Agr Univ, Coll Resources & Environm Sci, Beijing, Peoples R China

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

关键词： Microbial inoculants;catalase activity;urease activity;cellulase activity;composting

期刊名称：ENVIRONMENTAL TECHNOLOGY （ 影响因子：3.247； 五年影响因子：2.699 ）

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收录情况： SCI

摘要： The aim of this study was to investigate the influence of inoculants on compost stability, maturity and enzyme activities during composting of chicken manure and cornstalk. Two microbial inoculants (originated from aerobic municipal sludge and municipal solid waste, respectively) were used in composting at the rate of 0.3% of initial raw materials (wet weight). No microbial inoculums were added to the control. The experiment was conducted under aerobic conditions for 53 days. The results show that enzyme activity is an important index to comprehensively evaluate the composting stability and maturity. Microbes originated from sludge works best in terms of composting stability and maturity (C:N ratio decreased from 15.5 to 10, and germination index increased to 109%). Microbial inoculums originated from sludge and municipal solid waste extended the time of thermophilic phase for 11 and 7 days, respectively. Microbial inoculums originated from sludge and MSW significantly increased the average of catalase activity (by 15.0% and 12.1%, respectively), urease activity (by 21.5% and 12.2%, respectively) and cellulase activity (by 32.1% and 26.1%, respectively) during composting.

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