Selection of bad odor reduction microbe for composting of pig and poultry feces
2018
Onoue, T. (Fukuoka Agriculture and Forestry Research Center, Chikushino, Fukuoka (Japan)) | Kusaka, Y. | Yamashita, S. | Shimokawa, T. | Maeda, M. | Saito, H. | Nishio, Y. | Asada, K.
Ammonia and sulfur compounds that cause pig and poultry feces to have a bad odor are present mainly in composting facilities. In this study, to reduce this bad odor at pig and poultry composting facilities, microbe stocks that have the ability to reduce bad odor were selected using a laboratory-scale composting system. Selected microbes were injected into poultry feces and composted, and the microbes' ability to reduce ammonia was tested. However, no microbe stock tested reduced poultry feces odor to a sufficient degree, so none were selected. On the other hand, composting of pig feces injected with Bacillus licheniformis Z21 stock which could reduce ammonia maximum concentration during composting by 40-60%, and feces injected with Bacillus licheniformis M3 stock which could reduce methyl-mercaptan maximum concentration during composting by 78%, were selected. Practical use of these microbes as bad odor reduction materials at composting facilities for pig feces is expected.
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