Microwave Technology for Treatment of Fume Hood Exhaust
Publication: Journal of Environmental Engineering
Volume 130, Issue 3
Abstract
CHA Corporation installed a fume hood adsorber (scrubber) unit onto an operating fume hood and microwave regeneration system in the Safety and Risk Management Building at the Advanced Technology Park in Bozeman, Montana. The microwave-based fume hood exhaust purification process is designed to capture hazardous air pollutants in the fume hood exhaust using granular activated carbon (GAC) and natural zeolite, and subsequently either recover or destroy desorbed pollutants by microwave energy during regeneration of the saturated adsorbents. Onsite testing of this prototype microwave system was conducted using a variety of air borne pollutants including toluene, ethyl acetate, methylene chloride and hydrochloric acid. Test results showed that microwave energy, at a frequency of 2,450 MHz, restored the original adsorption capacity of saturated GAC and saturated natural zeolite. The results also demonstrated that microwave-induced catalytic oxidation was capable of providing oxidation efficiencies greater than 99% with oxidation temperatures below
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 130 • Issue 3 • March 2004
Pages: 338 - 348
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: Sep 19, 2002
Accepted: Jan 22, 2003
Published online: Feb 19, 2004
Published in print: Mar 2004
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