Removal of Gas-Phase Element Mercury by Activated Carbon Fiber Impregnated with CeO2

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• 作者：Xiaopeng Fan ; Caiting Li ; Guangming Zeng ; Zhao Gao ; Ling Chen ; Wei Zhang ; Hongliang Gao
• 刊名：Energy & Fuels
• 出版年：2010
• 出版时间：August 19, 2010
• 年：2010
• 卷：24
• 期：8
• 页码：4250-4254
• 全文大小：781K
• 年卷期：v.24,no.8(August 19, 2010)
• ISSN：1520-5029

文摘

The Hg⁰ removal ability of activated carbon fiber (ACF) impregnated with cerium dioxide (CeO₂/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 SO₂, on the Hg⁰ removal rates were investigated. The experimental results showed that impregnation with CeO₂ significantly enhanced the Hg⁰ removal ability of ACF, particularly with the loading value of 6%. The samples at different calcination temperatures had a similar Hg⁰ removal performance. When the temperature was below 150 °C, the CeO₂/ACF removal ability for Hg⁰ was enhanced with the increase of the temperature and then decreased after 150 °C. NO and SO₂ of the exprimental gas were found to have a promoted effect on Hg⁰ oxidation.