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ADSORPTION PROCESS FOR ODOR EMISSION CONTROL AT A PILOT SCALE DAIRY MANURE COMPOSTING FACILITY
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Pp. 189-196 in Air Pollution from Agricultural Operations III, Proceedings of the 12-15 October 2003 Conference (Research Triangle Park, North Carolina USA), Publication Date 12 October 2003. 701P1403.(doi:10.13031/2013.15511)
Authors: A. Tanaka, K. Yakushido, and C. Shimaya
Keywords: Odor, Ammonia emission, Compost, Adsorption, Dairy manure
The odors emitted during the first 2 weeks of composting were conveyed into replicated adsorption reactors (3.8m x 7.2m), loaded with finished compost, to remove odors at a pilot scale composting facility. The initial composting material (50 m3) consisted of dairy cattle manure and sawdust. Finished compost of the same volume filled the adsorption reactors. The ammonia emission during the first 72-h of composting decreased significantly (¡« 94% , P<0.01,) with the adsorption treatment. Dimethyl disulfide was reduced significantly (P<0.05) with reduction rates ranging from 97% to 100%. However, n-valeric acid increased significantly (P<0.05) by the adsorption treatment. The ammonia concentration after the adsorption was still 2.5 times greater than the Japanese¡¯s lower-side regulation, thus the exhaust air from the adsorption reactor would still require to be diluted 2.5 times with fresh air to meet emission standards.
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