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EVALUATION OF FOAM SCRUBBING AS A METHOD FOR COLLECTING FINE PARTICULATE
Citation:
Ramsey, G. EVALUATION OF FOAM SCRUBBING AS A METHOD FOR COLLECTING FINE PARTICULATE. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/2-77/197 (NTIS PB271549), 1977.
Description:
The report summarizes the knowledge and data obtained during an investigation of foam scrubbing as a method for collecting fine particulate. The foam scrubber was tested at room temperature, using iron oxide aerosols at concentrations near 0.00137 mg/cu m. Inlet and outlet samples were taken with cascade impactors and total mass filters. These tests were performed with different foam residence times and flow rates. A residence time of 35 seconds yielded a collection efficiency of 58%, while a residence time of 120 seconds yielded an efficiency of 95%. The operating cost of foam scrubbing with 99% surfactant recycle is an order of magnitude higher than that of the most expensive conventional method.