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CONTROL CHARACTERISTICS OF CARBON BEDS FOR GASOLINE VAPOR EMISSIONS
Citation:
Manos, M. AND W. Kelly. CONTROL CHARACTERISTICS OF CARBON BEDS FOR GASOLINE VAPOR EMISSIONS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/2-77/057.
Description:
The report gives results of a study of the practical working capacity of activated carbon to cyclically adsorb gasoline vapor which would otherwise be lost to the atmosphere; e.g., during gasoline transfer operations at a service station. Quantitative measurements, made in the laboratory, were extrapolated to represent typical operation of a carbon control system at a service station pumping 50,000 gallons of gasoline per month. Eight types of activated carbon from four manufacturers were evaluated to determine working capacity, basically defined as the amount of gasoline vapor which could be cyclically adsorbed per 100 grams of virgin activated carbon. Tests were conducted at various levels of fuel volatility, lead content, carbon bed shape, ambient temperature and humidity, purge air flow rate and temperature, and vacuum-stripping pressure and temperature.