Characteristics of n-Hexane Adsorption overHeat-Treated Activated Carbon

Jang Won Shin; Kyung Seun Yoo; Soo Yeop Park; Kwang Seop Song

Journal of Industrial and Engineering Chemistry, Vol.12, No.3, 418-424, May, 2006

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Characteristics of n-Hexane Adsorption overHeat-Treated Activated Carbon

Jang Won Shin, Kyung Seun Yoo^†, Soo Yeop Park, and Kwang Seop Song¹

Department of Environmental Engineering, Kwangwoon University, 447-1, Wolge-Dong, Nowon-Gu, Seoul 139-701, Korea
¹Catalytic Combustion Research Center, Korea Institute of Energy Research, 71-2, Jang-Dong, Yuseong-Gu,Daejon 305-343, Korea

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To investigate quantitatively the effects of surface oxide complexes of activated carbon on n-hexane adsorption, chromatographic analysis was performed using GC-TCD. Elution curves from the detector were analyzed by the moment method and adsorption parameters were calculated. The isosteric heat of adsorption was ca. -18.5 kcal/mol and the equilibrium adsorption constants were ca. 2500∼ 13,000 cm3/g. The diffusivities of n-hexane in the macro and micropores of activated carbon were 10^-2 cm2/sec and 10^-11 cm2/sec, respectively. Heat treatment of the activated carbon did not affect these parameters. The variation of the adsorption parameters was within 10 %, which leads to the conclusion that an interaction between nhexane and the surface oxide complexes was not significant.

Keywords:adsorption;moment method;activated carbon;n-hexane;heat treatment

[References]

Chiang YC, Chiang PC, Chang EE, J. Environ. Eng.-ASCE, 27, 54 (2001)
Kim SC, Hong IK, J. Ind. Eng. Chem., 4(3), 177 (1998)
Carrott PJM, Sing KSW, J. Chromatogr., 406, 139 (1987)
Chihara K, Suzuki M, Kawazoe K, AIChE J., 24, 237 (1987)
Tamon H, Okazaki M, Carbon, 34, 741 (1996)
Jagiello J, Bandosz TJ, Schwarz JA, J. Colloid Interface Sci., 151, 433 (1992)
Bandosz T, Carbon, 37, 483 (1999)
Tessmer CH, Vidic RD, Uranowski LJ, Environ. Sci. Technol., 31, 1872 (1997)
Julien F, Baudu M, Mazet M, Water Res., 32, 3414 (1998)
Choi DY, Row KH, J. Ind. Eng. Chem., 10(6), 1052 (2004)
Kim BU, Gu HS, Lee TJ, Korean Chem. Eng. Res., 33, 99 (1995)
Boehm HP, Adv. Catal., 16, 179 (1964)
Lee WH, Reucroft PJ, Carbon, 37, 7 (1999)
Grajek H, Witkiewicz Z, Jankowska H, J. Chromatogr. A, 782, 87 (1997)
Schneider P, Smith JM, AIChE J., 14, 886 (1968)
Do DH, Do DD, Prasetyo I, Chem. Eng. Sci., 56, 4315 (2001)
Ruthven DM, Principles of Adsorption and Adsorption Process, New York, Wiley (1984)

[Referenced By]

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[1] Chiang YC, Chiang PC, Chang EE, J. Environ. Eng.-ASCE, 27, 54 (2001)

[2] Kim SC, Hong IK, J. Ind. Eng. Chem., 4(3), 177 (1998)

[3] Carrott PJM, Sing KSW, J. Chromatogr., 406, 139 (1987)

[4] Chihara K, Suzuki M, Kawazoe K, AIChE J., 24, 237 (1987)

[5] Tamon H, Okazaki M, Carbon, 34, 741 (1996)

[6] Jagiello J, Bandosz TJ, Schwarz JA, J. Colloid Interface Sci., 151, 433 (1992)

[7] Bandosz T, Carbon, 37, 483 (1999)

[8] Tessmer CH, Vidic RD, Uranowski LJ, Environ. Sci. Technol., 31, 1872 (1997)

[9] Julien F, Baudu M, Mazet M, Water Res., 32, 3414 (1998)

[10] Choi DY, Row KH, J. Ind. Eng. Chem., 10(6), 1052 (2004)

[11] Kim BU, Gu HS, Lee TJ, Korean Chem. Eng. Res., 33, 99 (1995)

[12] Boehm HP, Adv. Catal., 16, 179 (1964)

[13] Lee WH, Reucroft PJ, Carbon, 37, 7 (1999)

[14] Grajek H, Witkiewicz Z, Jankowska H, J. Chromatogr. A, 782, 87 (1997)

[15] Schneider P, Smith JM, AIChE J., 14, 886 (1968)

[16] Do DH, Do DD, Prasetyo I, Chem. Eng. Sci., 56, 4315 (2001)

[17] Ruthven DM, Principles of Adsorption and Adsorption Process, New York, Wiley (1984)