A basic technical book on the design and application of gas cleaning technologies that use liquids, first published in the 1980's and used by plant and environmental engineers, regulatory personnel, and others concerned with air pollution. The second edition enlarges the discussion on the theory of operation, includes new sections on hybrid scrubber systems and irrigated fiberbed filters that use Brownian motion capture techniques, and incorporates the more stringent air pollution regulations. Annotation copyright by Book News, Inc., Portland, OR