Abstract
The effects of intermittent contaminant loading compared to constant contaminant loading on the bed capacity of an activated carbon filter under constant flow conditions were investigated. Two separate studies were conducted, one with benzene as the contaminant, the other utilizing carbon tetrachloride as the contaminant. A 16% reduction in effective bed capacity was observed for benzene and a 20% reduction occurred with carbon tetrachloride under equal loading and flushing intervals. It was found that a significant reduction in bed capacity under periodic loading - constant air flow conditions occurred when compared with constant loading - constant flow situations.
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