Fluidized-bed catalytic oxidation/caustic scrubbing for control of halogenated VOC emissions
- URS Consultants, Inc., Sacramento, CA (United States)
- URS Consultants, Inc., Denver, CO (United States)
- McClellan Air Force Base, Sacramento, CA (United States)
A fluidized-bed catalytic oxidation system with caustic scrubbing was used to control emissions of halogenated volatile organic compounds (VOCS) during soil remediation at McClellan Air Force Base (McAFB), California. Emissions from the off-gases of soil vapor extraction (SVE) systems included primarily trichloroethene (TCE), tetrachloroethene (PCE), and Freons. Oxidation of these gases creates acid gases (hydrochloric [HCl] and hydrofluoric [HF]), which are removed in a caustic scrubber. Testing for VOC destruction and removal efficiency (DRE), acid gas scrubbing efficiency, dioxin/furan formation, and criteria pollutant emission rates was conducted. Over 8,150 pounds of halogenated VOCs have been extracted and treated through May, 1995. Various emission control technologies, including condensation, photolytic oxidation, carbon adsorption, biofiltration, and catalytic oxidation, were considered for emissions control. Technology selection was based on pilot testing data and feasibility evaluations. Halogenated VOC concentrations in the 2,000 to 10,000 parts per million volume (ppmv) range indicated use of a thermal technology for emissions control. To limit nitrogen oxide (NOx) emissions, the choice of thermal technologies was limited to fixed-bed or fluidized-bed catalytic oxidizers.
- OSTI ID:
- 215508
- Report Number(s):
- CONF-951139--
- Country of Publication:
- United States
- Language:
- English
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