Experimental Study on the Removal of Flue Gas Mercury by Coal Fly Ash under UV Light Conditions

Abstract:

The mercury removal performance of the 150 mesh coal fly ash was evaluated through multiphase flow reactor designed by Shanghai University of Electric Power and different types of fly ash and absorption liquid were analyzed with HYDRA AA. The results showed that UV light almost had no oxidation capacity for gaseous mercury without fly ash, but the removal efficiency was significantly improved from 38.5% to 66.1% in the UV light by adding fly ash into the simulated flue gas. The fly ash after exposure to UV irradiation can improve the removal efficiency of Hg and the capture capacity of oxidized Hg had been greatly enhanced. Most of mercury adsorbed on the surface of fly ash in light conditions was Hg0 (g) and most Hg2+(g) stayed in the simulated flue gas and then was absorbed by absorption liquid.

• Periodical: Advanced Materials Research (Volumes 610-613)
• Pages: 210-214
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.610-613.210
• Online since: December 2012
• Authors: Ji Hui Fang, Xian Li, Jianping Zhou, Jiang Wu, Jianhua Chen, Ping He, Jian Xing Ren, Wei Guo Pan, Xue Wei Dai, Xiaojun Zhao, Yue Han
• Keywords: Coal Fly Ash, Flue Gas Mercury, Photocatalytic

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