Removal of Gas-Phase Elemental Mercury by Bromine-Impregnated Activated Carbon

Jiang Wu; Jie He Chen; Shuai Bo Zhang; Ping He; Ji Hui Fang; Ye Cheng Wu

doi:10.4028/www.scientific.net/AMR.356-360.1660

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 356-360Removal of Gas-Phase Elemental Mercury by...

Removal of Gas-Phase Elemental Mercury by Bromine-Impregnated Activated Carbon

Abstract:

Br-impregnated activated carbon for gas-phase elemental mercury adsorption experiments were carried out at a fixed-bed system to get the suitable mass fraction of KBr impregnation solution. Hg removal efficiency of 1% wt KBr-ACs was 69.0%, while that of 10% wt KBr-ACs was 57.9%. Both of them were higher than that of the raw activated carbon, 42.2%. The removal efficiency of Hg⁰ was not proportional to bromine concentration. Under 80-180°C, Hg removal efficiency of 1% wt KBr-ACs were 68.3%-71.8%, and at 140°C it reached the highest due to the increasing chemical adsorption ability of the functional groups which was on the surfaces of activated carbons by impregnating. At 160°C, Hg removal efficiency was lower than that at 140°C due to desorption making physical adsorption decrease, so that the total adsorption decreased.

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Periodical:

Advanced Materials Research (Volumes 356-360)

Pages:

1660-1663

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.356-360.1660

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Online since:

October 2011

Authors:

Jiang Wu, Jie He Chen, Shuai Bo Zhang, Ping He, Ji Hui Fang, Ye Cheng Wu

Keywords:

Activated Carbon (AC), Br-Impregnated, Chemical Treatment, Removal of Mercury

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