Gas separation: processes – Selective diffusion of gases – Selective diffusion of gases through immobilized liquid
Patent
1996-11-21
1999-09-21
Spitzer, Robert
Gas separation: processes
Selective diffusion of gases
Selective diffusion of gases through immobilized liquid
95 45, 95 50, 435266, B01D 5322
Patent
active
059548584
ABSTRACT:
The present invention provides a method for treating volatile hazardous air pollutant (VHAP) and volatile organic compound (VOC) waste products from gas streams. The system disclosed herein employs microporous hydrophobic membranes to remove VHAPs/VOCs from a gas stream into an oleophilic stripping fluid. The stripping fluid is directed into a separate biomembrane reactor wherein the VHAPs/VOCs are transferred across a second microporous hydrophobic membrane into an aqueous nutrient medium, where the extracted VHAPs/VOCs are degraded by microorganisms residing on the surface of the membrane. VHAPs/VOCs are degraded to carbon dioxide, water, and cell debris. The disclosed system uncouples biotreatment from waste generation, such that operation of the biotreatment unit can be continuous and optimized independently of plant work schedules or fluctuations in pollutant concentrations entering the system.
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Peretti Steven William
Shepherd, Jr. Robert Donald
Thomas Stuart Marc
North Carolina State University
Spitzer Robert
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