Agarwalla, Hridesh and Senapati, Rabi Narayan and Das, Tarit Baran (2021) Mercury emissions and partitioning from Indian coal-fired power plants. Journal of Environmental Sciences, 100. pp. 28-33.

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In India coal combustion is the single largest source of emission of mercury which is a wide-spread persistent global toxicant, travelling across international borders through air and water. As a party to the Minamata convention, India aims to monitor and reduce Hg emissions and stricter norms are introduced for mercury emissions from power plants (30 μg/Nm3 for flue gas in stack). This paper presents the results obtained during the experimental studies performed on mercury emissions at four coal-fired and one lignite-fired power plants in India. The mercury concentration in the feed coal varied between 0.12–0.27 mg/Kg. In the mercury mass balance, significant proportion of feed coal mercury has been found to be associated with fly ash, whereas bottom ash contained very low mercury. 80%–90% of mercury was released to air through stack gas. However, for circulating fluidised bed boiler burning lignite, about 64.8% of feed mercury was found to get captured in the fly ash and only 32.4% was released to air. The mercury emission factor was found to lie in the range of 4.7–15.7 mg/GJ. © 2020 Published by Elsevier B.V. on behalf of The Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences

Item Type: Article
Uncontrolled Keywords: Coal combustionEmissionMercuryFlue gasThermal power plant
Subjects: Coal Characterisation
Depositing User: Mr. B. R. Panduranga
Date Deposited: 22 Jul 2020 10:04
Last Modified: 22 Jul 2020 10:04

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