Air quality assessment and modelling of pollutants emission from a majorcement plant complex in Nigeria

Adeniran, J. A and Yusuf, R. O and Fakinle, B. S and Sonibare, J. A (2019) Air quality assessment and modelling of pollutants emission from a majorcement plant complex in Nigeria. Atmospheric Pollution Research, 10.

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Cement manufacturing contributes to the elevation of air pollutants in the atmosphere and thus impact on thenearby communities. This study assessed air quality in a major Cement Plant in Ibese Ogun State, Nigeria,through an ambient air quality monitoring and air emission dispersion modelling. Particulate Matter (PM) andgaseous pollutants were measured using portable samplers and AERMOD View was used for the emission dis-persion modelling. Combustion products including SO2, NO, NO2, CO and VOCs were the gaseous pollutantsdetected along the complex fenceline and in the receptor environments. Pollutants measurements were under-taken at 23 locations within the fence line and receptor locations. The daily SO2and NO2Federal Ministry ofEnvironment - Nigeria (FMEnv) limits were exceeded in ten (10) andfive (5) locations along the fenceline,respectively. Particulates were detected in all the locations along the fenceline and in the communities. Thecumulative gaseous pollutants resulting from simultaneous operations of all the identified plant air emissionpoint sources are 0.01–276.13% of their respective 24-h limits along the fenceline, with 1-h SO2within thethreshold limit at all fenceline locations, but 1-h NOXexceeds the threshold limit at all locations 16–21 times.The 24-h CO and VOCs are within their limits at all fenceline locations; however the 24-h SO2and NOXarebreaching the limits at some locations 30–34 times (0.34–0.39% of the investigation period) and 44–87 times,respectively. Daily and Annual averaging concentrations of PM10was 14.32–31.54% and 4.90–52.60% of theirrespective limits. Process facilities are the major point sources of atmospheric emissions identified in the factory.Several fugitive emission sources were also identified during thefield work. Comprehensive evaluation of thefugitive emission sources should be carried out in the cement plant for immediate attention.

Item Type: Article
Subjects: T Technology > TP Chemical technology
Date Deposited: 18 Sep 2019 14:27
Last Modified: 18 Sep 2019 14:27

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