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Received May 9, 2016
Accepted October 30, 2016
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Adsorption and kinetics of elemental mercury vapor on activated carbons impregnated with potassium iodide, hydrogen chloride, and sulfur
Ha-Na Jang1
Seung-Ki Back1
Jin-Ho Sung1
Bup-Mook Jeong2
Youn-Suk Kang3 4
Chul-Kyu Lee3 5
Jongsoo Jurng6
Yong-Chil Seo1†
1Department of Environmental Engineering, Yonsei University, Wonju 26494, Korea 2Plant Engineering Center, Institute for Advanced Engineering, Yongin 17180, Korea 3R&D Center, J-E Tech Co., Ltd., Seoul 08584, Korea 4Department of Environmental Energy Engineering, Kyonggi University, Suwon 16227, Korea 5, Korea 6Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology, Seoul 02792, Korea
Korean Journal of Chemical Engineering, March 2017, 34(3), 806-813(8), 10.1007/s11814-016-0305-1
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Abstract
Coal combustion emits large amounts of elemental mercury that cannot be captured by air pollution control devices such as flue gas desulfurization because of its insolubility. Therefore, technological advances are necessary for capturing elemental mercury. We conducted various tests on adsorption of elemental mercury using KI-, HCl-, and S-impregnated activated carbons, which were compared with virgin activated carbon. Tests with virgin activated carbon revealed that the optimal adsorption temperature for capturing elemental mercury was 363 K. The adsorption efficiency for elemental mercury was nearly 100% using activated carbon impregnated with 1% and 5% KI and 1%, 5%, and 10% HCl. Through kinetic analyses of the impregnated activated carbons, the optimal equilibrium adsorption capacities of KI-, HCl-, and S-impregnated activated carbons for mercury were determined to be 333.3, 333.3, and 256.4mg/g, respectively, by using a pseudo second-order kinetic model.
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References
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Jurng J, Lee TG, Lee GW, Lee SJ, Kim BH, Seier J, Chemosphere, 47, 907 (2002)
Saha A, Energy Fuels, 28(6), 4021 (2014)
Pan HY, Minet RG, Benson SW, Tsotsis TT, Ind. Eng. Chem. Res., 33(12), 2996 (1994)
Du W, Yin LB, Zhuo YQ, Xu QS, Zhang L, Chen CH, Ind. Eng. Chem. Res., 53(2), 582 (2014)
Cai J, Shen BX, Li Z, Chen JH, He C, Chem. Eng. J., 241, 19 (2014)
Shen B, Chen J, Yue S, Microporous Mesoporous Mater., 203, 216 (2015)
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Ho YS, McKAY G, Trans Institution Chem. Engineers, 76(Part B) (1998)
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Skodras G, Diamantopoulou I, Pantoleontos G, Sakellaropoulos GP, Materials, 158, 1 (2009)
Asasian N, Kaghazchi T, Faramarzi A, Siboni AH, Kesheh RA, Kavand M, Int. J. Environ. Sci. Technol., 45, 1588 (2014)
Raji F, Pakizeh M, Appl. Surf. Sci., 301, 568 (2014)
Cui LM, Guo XY, Wei Q, Wang YG, Gao L, Yan LG, Yan T, Du B, J. Colloid Interface Sci., 439, 112 (2015)
