The Hg 0 removal ability of activated carbon fiber (ACF) impregnated with cerium dioxide (CeO 2 /ACF) was tested in experimental gas. Some physicochemical techniques, such as Brunauer−Emmett−Teller (BET), scanning electron microscopy (SEM), and Fourier transform infrared (FTIR) spectroscopy, were used to characterize the samples. The effects of loading values, calcination temperatures, reaction temperatures, and acid gases, such as NO and SO 2, on the Hg 0 removal rates were investigated. The experimental results showed that impregnation with CeO 2 significantly enhanced the Hg 0 removal ability of ACF, particularly with the loading value of 6%. The samples at different calcination temperatures had a similar Hg 0 removal performance. When the temperature was below 150 °C, the CeO 2 /ACF removal ability for Hg 0 was enhanced with the increase of the temperature and then decreased after 150 °C. NO and SO 2 of the exprimental gas were found to have a promoted effect on Hg 0 oxidation.
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Fan et al. (2010) studied this question.
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