Dispersion Modeling of Gas Emission and Total Suspended Particulate in Java’s Coal-Fired Power Plant Using AERMOD
Keywords:
AERMOD, Emission, Dispersion, Coal Fired Power PlantAbstract
This study analyzes the dispersion of SO₂, NOₓ, and total suspended particulates (TSP) from a coal-fired power plant using the AERMOD model. Meteorological and terrain data were processed via WRPLOT, AERMET, and AERMAP. Results show that SO₂ and NOₓ predominantly disperse eastward and southward, with peak concentrations recorded around 1.5 km south of the emission source. Maximum SO₂ concentrations reached 1,937.27 µg/m³ (1-hour), 298.59 µg/m³ (24-hour), and 55 µg/m³ (annual), with exceedances of regulatory limits for short- and medium-term periods. NOₓ concentrations peaked at 15,494.63 µg/m³ (1-hour), 1,909.30 µg/m³ (24-hour), and 175 µg/m³ (annual), surpassing the respective limits of 1-hour and 24-hour standard. In contrast, TSP concentrations remained below the 24-hour limit, with a maximum of 109.42 µg/m³. Model evaluation showed good performance for SO₂ (RMSE and MAE <10%, bias within –0.3 to 0.3), while NOₓ was overestimated and TSP underestimated due to AERMOD’s limitations in simulating chemical reactions and terrain effects. The study recommends incorporating non-fugitive sources, high-resolution land data, and chemical transformation modules to enhance model accuracy and support effective air quality management in complex terrain.
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