• K.Pravallika
• Dr.N.Munilakshmi

Power Plants are the major source of criteria air pollutants. Coal is the primary fuel used for generation of electricity in India and its usage is continually increasing to meet the growing energy demands of the country. Emission of greenhouse gases and Nitrogen Oxide (NOx), is the increasing parallel to the growing demands of electricity. This paper deals with the case study for prediction of the NOx pollution caused by thermal power plant Dr. Narla Tata Rao Thermal Power Plant (NTTP), located at Ibrahimpatnam, Vijayawada, Andhra Pradesh State. An atmospheric dispersion model AERMOD-9.1(American Meteorological Environmental Protection Agency Regulatory Model) was used. Meteorological data for one year was processed using AERMET processor. The model was run for modeling of dispersion of pollutants NOx, for all the months of the study period from July 2017 to June 2018 over study area. Model also runs for yearly, monthly, averaged emission scenarios. The isopleths were plotted for the same and these concentration contours are very important in determining the spatial distribution of NOx pollutant over the modeled area. For the Ambient Air Quality Monitoring Stations, the predicted concentrations were found to be in good agreement with the measured concentrations. For AERMOD model, values of coefficient of determination R2 are in the range 0.78 to 0.94. The model output was compared with NAAQS, 2017 norms. For the Ambient Air Quality Monitoring Stations, the predicted concentrations were found to be in good agreement with the measured concentrations. The predictions are of reasonable accuracy and may be used for any other industry in its vicinity up to 50 km Diameter.

AERMOD, Pollutant, Dispersion, Impact, Modeling, Isopleths.

"MODELING OF DISPERSION OF NITROGEN OXIDE (NOx) FROM Dr. NARLATATA RAO THERMAL POWER PLANT USING AERMOD MODEL", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.159-166, June 2019, Available :http://www.jetir.org/papers/JETIR1906V24.pdf

"MODELING OF DISPERSION OF NITROGEN OXIDE (NOx) FROM Dr. NARLATATA RAO THERMAL POWER PLANT USING AERMOD MODEL", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp159-166, June 2019, Available at : http://www.jetir.org/papers/JETIR1906V24.pdf