Effect of covering composting piles with mature compost on ammonia emission and microbial community structure of composting process.
Effect of covering composting piles with mature compost on ammonia emission and microbial community structure of composting process.
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DOI：
10.2134/jeq2008.0083
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发表时间：
2009-02
影响因子：
2.4
通讯作者：
K. Maeda;R. Morioka;T. Osada
中科院分区：
文献类型：
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作者：
K. Maeda;R. Morioka;T. Osada
为了控制奶牛(Bos Taurus)粪便堆肥过程中氨(NH3)的挥发，将腐熟的堆肥覆盖在堆肥堆上，利用动态室系统对堆肥过程中的气体排放进行评估。堆肥后NH(3)挥发峰值由196 mg/m~3降至62 mg/m~(3)。还观察到NH(4)-N在覆盖腐熟堆肥中的积累。堆肥复盖和与腐熟堆肥混合对微生物群落结构没有影响。然而，随着时间的推移，由于堆肥中易降解有机化合物的减少，微生物群落结构发生了变化。挥发性脂肪酸(VFA)的有效性被认为是堆肥中微生物群落结构的重要因素。挥发性脂肪酸消失后，NO(3)-N浓度升高，纤维素菌等纤维素降解菌数量增加。
To control ammonia (NH(3)) volatilization from the dairy cattle (Bos taurus) manure composting process, a compost pile was covered with mature compost and the gas emissions evaluated using the dynamic chamber system. The peak of NH(3) volatilization observed immediately after piling up of the compost was reduced from 196 to 62 mg/m(3) by covering the compost pile with mature compost. The accumulation of NH(4)-N to the covered mature compost was also observed. Covering and mixing the compost with mature compost had no effect on the microbial community structure. However, over time the microbial community structure changed because of a decrease in easily degradable organic compounds in the compost piles. The availability of volatile fatty acids (VFA) was considered to be important for microbial community structure in the compost. After the VFA had disappeared, the NO(3)-N concentration increased and the cellulose degrading bacteria such as Cytophaga increased in number.