Estimation of odor emission from livestock farms and an approach to reducing odor intensity
2004
Kajikawa, M. (Gifu-ken. Livestock Research Inst., Kiyomi (Japan)) | Hayakawa, H. | Itoh, H. | Torimoto, Y. | Mori, C. | Takahara, Y. | Umeda, I.
In this experiment , odor emission from livestock farms in Gifu Prefecture was examined and odor emission rate(OER)was used for measuring odor intensity. 1) Places responsible for odor emission were the barn. sewage disposal facilities and compost depot in swine farms, the waste-drying space and compost depot in layer-type chicken farms, the poultry house in broiler chicken farms, and the compost depot in dairy and beef cattle farms 2) Major odor compounds were ammonia and sulfuric compounds such as methylmercaptane in composting facilities, and lower fatty acids such as normal butyric acid in swine and broiler chicken houses 3) OER in livestock farms was season-dependent and tended to increase during from summer to autumn months OER in all farms tested was above the control value(1x10**5). 4) A deodorization device . which facilitates collection of air out of composting equipment and exposes the outlet air to water shower, was developed. The device proved to remove more than 80% of ammonia but not sulfuric compounds. Thus, this introduced a new subject of inquiry.
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