Point source modeling of nitrogen dioxide and particulate matter concentration surrounding Melawa Power Station, Kota Kinabalu

Tan, Cheow Leng (2005) Point source modeling of nitrogen dioxide and particulate matter concentration surrounding Melawa Power Station, Kota Kinabalu. Universiti Malaysia Sabah. (Unpublished)

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Abstract

A study was carried out to model the dispersion of N02 and PM10 concentration from point source at Melawa Power Station, Kota Kinabalu using ISC AERMOD View dispersion model. 10 locations were defined within the 1000 m x 1000 m area to serve as sensitive receptors. The dispersion contour showed a similar trend of a fan-like shaped at the west of the power station due to the dominance of eastern wind. The main contributor of emission within the Melawa Power Station Complex is the SESB stack caused by building downwash which the height of the stack is lower than the building. The maximum 1-hr averaging concentration ofN02 is 123.33 µg/m³ and the maximum 24-hr averaging concentration of PM10 is 84.75 µg/m³ at distance of 0.15 km to the west of the Melawa Power Station Complex. The model was validated by comparing the model output and existing air quality data with 95% of the accumulative frequency distribution by a factor of less than 1.5. Analysis between predicted concentrations with measured data of NO2 and PM10 showed a strong correlation with r-value of 0.926 and 0.932. The highest ground level concentrations predicted at SESB Staff Quarters (R5) is 123 µg/m³ of NO2 and 83 µg/m3 of PM10. Results of the study revealed that the air pollutants from Melawa Power Station were well within the adequate exposure limit to human health and compliance limit of the Malaysian Ambient Air Quality Guideline.

Item Type: Academic Exercise
Uncontrolled Keywords: Melawa Power Station, ISC AERMOD View dispersion model, sensitive receptor, air pollutant, Malaysian Ambient Air Quality Guideline
Subjects: T Technology > TX Home economics > Nutrition. Foods and food supply
Divisions: SCHOOL > School of Science and Technology
Depositing User: MDM SITI AZIZAH IDRIS
Date Deposited: 09 Jan 2014 06:24
Last Modified: 10 Oct 2017 07:48
URI: http://eprints.ums.edu.my/id/eprint/7930

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