Effect of the use of gasohol on ozone formation for cities in the Tennessee Valley region

Technical Report · Fri Feb 01 04:00:00 EST 1985

OSTI ID:6064704

Bailey, E M; Meagher, J F

The effect on ozone formation of conversion from gasoline to gasohol would be minimal unless gasohol significantly effects the emissions control devices. Since gasohol-fueled vehicles have higher evaporative emissions than gasoline-fueled vehicles, increases in ozone formation of a few percent would be anticipated if the charcoal canisters used for controlling evaporative emissions were degraded by use of gasohol. Larger increases in ozone formation would result if use of gasohol resulted in deterioration of catalytic converters. Changes in ozone formation due to conversion from gasoline to gasohol will be greater (approx.3%) under episodic conditions than under typical ambient conditions. The use of gasohol which has been blended for volatility control will not significantly reduce ozone formation relative to use of unadjusted gasohol. Initial ambient HC and NO/sub x/ concentration has an important effect on the change in ozone formation caused by conversion from gasoline to gasohol. The largest effects on ozone formation were seen at high ratios of ambient NO/sub x//HC. This fact indicates that cities in which the emissions have characteristically high NO/sub x//HC ratios would experience the greatest effect due to the conversion from gasoline to gasohol. 48 refs., 10 figs., 11 tabs.

• Research Organization: Tennessee Valley Authority, Muscle Shoals, AL (USA). Office of Natural Resources and Economic Development
• OSTI ID: 6064704
• Report Number(s): TVA/ONRED/AWR-85/5; ON: DE86901132
• Country of Publication: United States
• Language: English

Related Subjects

500300* -- Environment
Atmospheric-- Radioactive Materials Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ALCOHOL FUELS
ATMOSPHERIC CHEMISTRY
CHEMISTRY
ECOLOGICAL CONCENTRATION
EXHAUST GASES
FLUIDS
FUELS
GASEOUS WASTES
GASES
GASOHOL
LIQUID FUELS
OZONE
SYNTHETIC FUELS
URBAN AREAS
WASTES