Health Impact Of Air Pollution On Dhaka City By Different Technologies Brick Kilns
Mohammad Abdul Motalib, Rodel D. Lasco, Enrique P. Pacardo, Carmelita M. Rebancos, Josefina T. Dizon
Keywords: Dhaka City, Air Pollution, Brick Kilns, Health Impact
Abstract: The main source of air pollution in Dhaka City is emissions from brick kilns. This study assessed the main factors that affect the city’s air pollution levels, as well as the contribution of the different types of brick kilns located in different zones in Dhaka. The significance of air pollution variable and the health impact were examined and policy analysis with respect to kiln type was done. The specific variables analyzed were PM10, PM2.5, SOx, NOx, NO2, CO, and O3; of these only PM10 and PM2.5 exceeded the Bangladesh air quality standards and those prescribed under the World Health Organization air quality guidelines. The study found that vertical shaft brick kilns (VSBK) had the lowest PM10 and PM2.5 emissions, whereas the zigzag types were the second lowest emitters. But in terms of SOx and CO emission, zigzag, gave the lowest values. For CO2, the hybrid hoffman kiln (HHK) had the lowest emission. The PM10 and PM2.5 data from the brick kilns were used in the health effect model and it was shown that zigzag kilns’ emissions can be reduced by 60%; VSBK, by 83%; and HHK, by 57%. These results can be used to avoid harmful health effects and to determine the disability-adjusted life year, as well as save on health care cost.
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