Vapor phase adsorption of trichloroethane using organically modified montmorillonite

Chun-Yong Ryu; Sang-Do Yeo

Journal of Industrial and Engineering Chemistry, Vol.16, No.3, 441-447, May, 2010

DOI10.1016/j.jiec.2010.01.043 Export Citation

Vapor phase adsorption of trichloroethane using organically modified montmorillonite

Chun-Yong Ryu, and Sang-Do Yeo^†

Department of Chemical Engineering, Kyungpook National University, Daegu 702-701, Republic of Korea

E-mail:

The vapor of 1,1,1-trichloroethane (TCA) was adsorbed to organically modified montmorillonite (organoclay). Hexadecyltrimethylammonium (HDTMA) was used to modify the surface of the clay and three types of organoclays with different HDTMA loadings were prepared. In adsorption experiments, the three types of organoclays, along with the non-modified (washed) clay were used. TCA was adsorbed from gaseous phase (nitrogen) by using a fixed adsorption bed. The adsorption breakthrough curves and the adsorption isotherms were determined at three different temperatures (24, 34, and 44 ℃). The adsorption data were modeled with the Langmuir and BET isotherm equations. It was found that the isotherms of non-modified clay exhibited a favorable Type I behavior, which implies that the adsorption capacity is strongly dependent on vapor concentration at low concentration ranges. In regards to the organoclays, isotherms showed a marginally favorable Type II behavior with a reduced adsorption capacity at low concentrations, and exhibited a linear increase at elevated vapor concentrations. The temperature effect on the adsorption capacities of non-modified clay and organoclays exhibited different patterns. Desorption of TCA from clays was also performed by using pure nitrogen. The desorption rate constant k was in the order of 10^(-4) min^(-1) for all types of clay.

Keywords:Adsorption;HDTMA;Montmorillonite;Organoclay;1,1,1-Trichloroethane

[References]

Moran MJ, Zogorski JS, Squillace PJ, Environ. Sci. Technol., 41, 74 (2007)
Dural NH, Chen CH, J. Hazard. Mater., 53, 75 (1997)
Huybrechts T, Dewulf J, Van Langenhove H, Environ. Pollut., 133, 255 (2005)
Park SJ, Kim YB, Yeo SD, Sep. Sci. Technol., 43(5), 1174 (2008)
Xi YF, Frost RL, He HP, J. Colloid Interface Sci., 305(1), 150 (2007)
Oyanedel-Craver VA, Smith JA, J. Hazard. Mater., 137(2), 1102 (2006)
Wiles MC, Huebner HJ, Mcdonald TJ, Donnelly KC, Phillips TD, Chemosphere., 59, 1455 (2005)
Boyd SA, Shaobai S, Lee JF, Mortland MM, Clays Clay Miner., 36, 125 (1988)
Zhang ZZ, Sparks DL, Scrivner NC, Environ. Sci. Technol., 27, 1625 (1993)
Dentel SK, Bottero JY, Khatib K, Demougeot H, Duguet JP, Anselme C, Water Res., 29, 1273 (1995)
Nzengung VA, Voudrias EA, Nkedi-Kizza P, Wampler JM, Weaver CE, Environ. Sci. Technol., 30, 89 (1996)
Carrizosa MJ, Rice PJ, Koskinen WC, Carrizosa I, Hermosin MD, Clays Clay Miner., 52, 341 (2004)
Yeo SD, Tuncer E, Akgerman A, Sep. Sci. Technol., 32(15), 2497 (1997)
McCabe WL, Smith JC, Harriott P, Unit Operations of Chemical Engineering, 7th ed., McGraw-Hill Co., New York, NY (2005)
Ruthven DM, Principles of Adsorption and Adsorption Processes, Wiley, New York, NY (1984)
Brunauer S, Deming LS, Deming WE, Teller E, J. Am. Chem. Soc., 62, 1723 (1940)
Tan CS, Liou DC, Ind. Eng. Chem. Res., 29, 1412 (1990)
Tan CS, Liou DC, Ind. Eng. Chem. Res., 27, 988 (1988)

[Referenced By]

[Related Articles]

[1] Moran MJ, Zogorski JS, Squillace PJ, Environ. Sci. Technol., 41, 74 (2007)

[2] Dural NH, Chen CH, J. Hazard. Mater., 53, 75 (1997)

[3] Huybrechts T, Dewulf J, Van Langenhove H, Environ. Pollut., 133, 255 (2005)

[4] Park SJ, Kim YB, Yeo SD, Sep. Sci. Technol., 43(5), 1174 (2008)

[5] Xi YF, Frost RL, He HP, J. Colloid Interface Sci., 305(1), 150 (2007)

[6] Oyanedel-Craver VA, Smith JA, J. Hazard. Mater., 137(2), 1102 (2006)

[7] Wiles MC, Huebner HJ, Mcdonald TJ, Donnelly KC, Phillips TD, Chemosphere., 59, 1455 (2005)

[8] Boyd SA, Shaobai S, Lee JF, Mortland MM, Clays Clay Miner., 36, 125 (1988)

[9] Zhang ZZ, Sparks DL, Scrivner NC, Environ. Sci. Technol., 27, 1625 (1993)

[10] Dentel SK, Bottero JY, Khatib K, Demougeot H, Duguet JP, Anselme C, Water Res., 29, 1273 (1995)

[11] Nzengung VA, Voudrias EA, Nkedi-Kizza P, Wampler JM, Weaver CE, Environ. Sci. Technol., 30, 89 (1996)

[12] Carrizosa MJ, Rice PJ, Koskinen WC, Carrizosa I, Hermosin MD, Clays Clay Miner., 52, 341 (2004)

[13] Yeo SD, Tuncer E, Akgerman A, Sep. Sci. Technol., 32(15), 2497 (1997)

[14] McCabe WL, Smith JC, Harriott P, Unit Operations of Chemical Engineering, 7th ed., McGraw-Hill Co., New York, NY (2005)

[15] Ruthven DM, Principles of Adsorption and Adsorption Processes, Wiley, New York, NY (1984)

[16] Brunauer S, Deming LS, Deming WE, Teller E, J. Am. Chem. Soc., 62, 1723 (1940)

[17] Tan CS, Liou DC, Ind. Eng. Chem. Res., 29, 1412 (1990)

[18] Tan CS, Liou DC, Ind. Eng. Chem. Res., 27, 988 (1988)