A SHORT COMMUNICATION ON ESTIMATION OF THE AIRBORNE POLLUTANTS EMISSIONS FROM CONSUMPTION OF GASOLINE AND DIESEL FUEL IN ISFAHAN

The main objective of this study was to determine total carbon monoxide, sulfur oxides, nitrogen oxides, volatile organic compounds (VOCs), PM10 and PM2.5 emitted to air by burning gasoline and diesel fuel in the city of Isfahan.
In this study it is assumed that all distributed fuel in Isfahan (including gasoline and diesel fuel) is consumed by diesel and gasoline engines and other their usages are negligible. Then, with the help of emission factors provided by the relevant international organizations such as European Environmental Agency, the total amounts of pollutants were calculated.
The results of this study showed that from 20 March 2016 to 20 March 2017 about 987 million liters of diesel fuel and 1052 million liters of gasoline were distributed in the city of Isfahan by the Oil Refining & Distribution Company of Isfahan, which produced 433115537 and 497070000 million BTU of energy from these fuels, respectively. The results of this study are not limited to fuels that used in vehicle engines in the city of Isfahan and also covers other fuel uses. Also, the results show that nitrogen oxides and carbon monoxide released by diesel engines were 865248 and 186391 tons, respectively. Also, nitrogen oxides and carbon monoxide released by gasoline engines, were as much as 367032 and 222921 tons, respectively.
Nearly 87 and 54 % of VOCs and carbon monoxide in Isfahan are emitted by gasoline engines, respectively. The share of diesel fuel engines in emission of nitrogen oxides, sulfur oxides and PM are estimated equal of 73, 76 and 73%, respectively.