Abstract
Air pollution control is concerned with the prevention of emissions into the atmosphere. The control of hazardous contamination given off by industrial processes involves contaminant capture at the point of generation and subsequent contaminant removal from the gas stream by the appropriate air pollution control equipment. This note outlined the importance of contaminant capture in conjunction with contaminant removal. Emissions from an industrial process consist of material escaping two potentially inefficient processes: the contaminants not collected by an exhaust air stream, and contaminants penetrating the air pollution control equipment. A way for measuring capture efficiency is described. The contaminant capture efficiency is equally important as the collection efficiency of the air cleaning device in ensuring low total emissions from the source. (DP)
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