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Moisture Sensing Methods for Biofilters Treating Exhaust Air from Livestock Buildings
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Paper number 054051, 2005 ASAE Annual Meeting . (doi: 10.13031/2013.19899) @2005
Authors: Matthew J Robert, Ted L. Funk, J. Malia Appleford, Yong Chen
Keywords: Biofilters, livestock odor, moisture measurement, odor control
Biofilters using media of crop residue materials have been shown effective in removing
odorants from air exhausted from livestock buildings, especially swine facilities. Adequate media
moisture is critical in maintaining biological growth in filters, and most biofilter installations use either
portable or permanently installed equipment for adding water to the media. A reliable method is
needed for continuously evaluating media moisture, to determine when water should be added to the
filter to replenish moisture levels deep within the filter.