Browsing by Author "Abdulraheem, K. A."

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    Modelling of gaseous pollutant emissions from savannah vegetation fires
    (Published by the Nigerian Society of Chemical Engineers., 2023) Abdulraheem, K. A.; Adeniran, J.A.; Aremu, A.S
    The concentration and transport dynamics of emissions during savannah vegetation fires are not wellunderstood. This study aims at modelling the ground level concentrations (GLC) of gaseous pollutants on the receptor environment using the American Meteorological Society/Environmental Protection Agency Regulatory Model (AERMOD). Three (3) scenarios were investigated based on the vegetation density of the savannah grasses. The model revealed that the 24-hour averaging period for CO, NO2, SO2 and volatile organic compounds (VOC) ranged from 50 – 5,046 µg/m3; 0.049 – 4.97 µg/m3; 0.6 - 55.9 µg/m3 and 63 – 6,253 µg/m3 for Scenario 1; 288 – 28,825 µg/m3; 0.08 – 8.31 µg/m3; 2 – 203 µg/m3 and 65 – 6,498 µg/m3 for Scenario 2; 394 and 39,435 µg/m3; 0.2 and 22.3 µg/m3; 4 – 419 µg/m3; and 118 - 11,782 µg/m3 for Scenario 3, respectively. The study revealed that the World Health Organization (WHO) guideline of 4 mg/m3 for the 24-hour concentration of CO was breached under Scenarios 2 and 3 by 150%. The findings of this study will help in the accurate estimation of emissions from the savannah fires and in the development of appropriate mitigation strategies for emission control. Keywords: Ground level concentrations; gaseous pollutants; modelling; emissions.