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Energy Technology Bulletin
Volatile Organic Compound Removal from Air Streams
by Membrane Separation
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Energy Technology Bulletin Volatile Organic Compound Removal from Air Streams by Membrane Separation (22K)
U.S. EPA Superfund Innovative Technology Evaluation (SITE) Program
VaporSepTM Membrane Process
Membrane Technology and Research, Inc.
ABSTRACT
This technology uses synthetic polymer membranes to remove organic vapors from contaminated air streams. The membrane, which is 10 to 100 times more permeable to organic compounds than to air, generates a clean air stream and a condensed (liquid) organic stream for reuse or disposal. Typical applications include cleaning process vent emissions, air stripper exhausts and for the recovery of CFCs and HCFCs. The concentration of organics in the residual air stream is usually low enough for direct discharge into the atmosphere. The permeation process is further enhanced by a low vapor pressure on the permeate side of the membrane. These systems can be designed for a wide range of flow rates and compositions and are significantly smaller than carbon adsorption systems of a similar capacity. Removal efficiencies vary between 90 and 99%, depending on the organic constituents present. In 1991, an Emerging Technology
project was completed for both the bench and pilot scales. In both cases, removal efficiencies of over 99.5% were achieved.
Back to SITE Home Page
Posted June 22, 1999
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