Removal of elemental mercury from simulated flue gas by a novel composite sulfurized activated carbon |
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| Authors: | Lei Qiu Hongmei Chen Xiaoting Liu Lu Zhu Caiting Li |
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| Affiliation: | 1. College of Environmental Science and Engineering, Hunan University, Changsha, P. R. China;2. Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, P. R. China |
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| Abstract: | Gas-phase elemental mercury (Hg°) removal by composite sulfurized activated carbon (CSAC) was studied under simulated flue gas conditions. The results showed that the CSAC, which was impregnated activated carbon (AC) with aqueous-phase sodium sulfide (Na2S) and followed with vapor-phase elemental sulfur (S°), had 1.5 times higher removal capacity than AC impregnated with single S°. This study further investigated the effect of individual flue gas components on the performance of CSAC. Fixed-bed experiments showed that SO2 and NO had no obvious impact on Hg° removal by CSAC, while the presence of O2 (up to 9%) increased the removal capacity up by 25%. |
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| Keywords: | Activated carbon elemental mercury flue gas removal capacity sulfur |
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