Effects of operating parameters on in situ NH3 emission control during kitchen waste composting and correlation analysis of the related microbial communities

Environmental Science and Pollution Research International
Ying DingHangjun Zhang

Abstract

Ammonia emission during composting results in anthropogenic odor nuisance and reduces the agronomic value of the compost due to the loss of nitrogen. Adjusting the operating parameters during composting is an emerging in situ odor control technique that is cheap and highly efficient. The effects of in situ NH3 emission control were investigated in this study by simultaneously adjusting key operating parameters (such as C/N ratio, aeration rate, and moisture content) during the composting processes (C1-C9). Results showed that the average NH3 emission concentrations for different treatments were in the order of C1 > C4 > C2 > C5 > C3 > C6 > C7 > C8 > C9. The total content of NH3 emission (21.02 g/kg) in C9 (C/N ratio = 35, aeration rate = 15 L/min, and moisture content = 60%) was much lower than that (65.95 g/kg) in C1 (C/N ratio = 15, aeration rate = 5 L/min, and moisture content = 60%). The nitrogen loss ratio was 27.36% for C1, while 16.15% for C9. The microbial diversity and abundance in C9 and C1 were compared using high-throughput sequencing. The relationship between NH3 emission, operating parameters, and the related functional microbial communities was also investigated. Results revealed that Nitrosospira, Nitrosomonas, ...Continue Reading

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Citations

Sep 19, 2020·Environmental Science and Pollution Research International·Jun JiangSami Rtimi
Sep 30, 2020·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Jun JiangJianhua Li
Aug 1, 2019·Environmental Science and Pollution Research International·Lu Zhang, Xiangyang Sun
Dec 31, 2019·Environmental Science and Pollution Research International·Zhiqiang ChenChunrong Chai
Feb 27, 2021·Applied Biochemistry and Biotechnology·Jayanta AndraskarAtya Kapley
Aug 21, 2021·The Science of the Total Environment·Xingzu GaoWenhai Luo
Aug 21, 2021·Bioresource Technology·Zhicheng XuWenhai Luo

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