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Received December 23, 2004
Accepted June 8, 2005
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Effect of Surface Properties of Activated Carbons on Surfactant Adsorption Kinetics
Department of Chemical Engineering, Pukyong National University, Busan 608-739, Korea 1Center for Molecular and Materials Sciences, University of South Australia, Mawson Lakes, SA, 5095, Australia
p.pendleton@unisa.edu.au
Korean Journal of Chemical Engineering, September 2005, 22(5), 705-711(7), 10.1007/BF02705786
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Abstract
This research investigates the adsorption properties of three activated carbons (AC) derived from coconut, coal, and wood origin. A linear relationship exists between the number of water molecules adsorbed onto each AC and the oxygen content determined elemental analysis and XPS. An inverse linear relationship exists between the plateau amount of dodecanoic acid anionic surfactant and the oxygen content on the surface of ACs. The surface charge on each AC’s surface had a linear relationship with the plateau amount of dodecanoic acid. A plug-flow heterogeneous surface diffusion model (PFHSDM) for a fixed-bed adsorption process was developed to describe the adsorption kinetics in a fixed-bed column. The model represents axially dispersed plug-flow, external mass transfer, adsorption equilibrium on the fluid-particle interface, and intraparticle diffusion. The larger molecular dimension of the dodecanoic acid as a more hydrophobic entity than octanoic acid led to a faster external mass transfer rate but a slower surface diffusion rate as estimated from the PFHSDM. The interaction between the organic moiety of surfactant and the AC surface chemistry such as surface oxygen content and surface charge contributes to the adsorption performance in both to the adsorption equilibrium and kinetics.
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References
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Baup S, Jaffre C, Wolbert D, LaPlanche A, Adsorption, 6, 219 (2000)
Boehm HP, Carbon, 32, 759 (1994)
Bandosz T, Carbon, 37, 483 (1999)
Carrott PJM, Sing KSW, Assessment of Microporosity, Elsevier, Amsterdam (1988)
Considine R, Denoyel R, Pendleton P, Schumann R, Wong SH, Colloids Surf. A: Physicochem. Eng. Asp., 179, 271 (2001)
Garcia-Delgado RA, Cotoruelo LM, Rodriguez JJ, Sep. Sci. Technol., 27, 1065 (1992)
Hind AR, Bhargava SK, Grocott SC, Colloids Surf. A: Physicochem. Eng. Asp., 146, 359 (1999)
Hoeft CE, Zollars RL, J. Colloid Interface Sci., 177(1), 171 (1996)
Jaroniec M, Madey R, Physical Adsorption on Heterogeneous Solids, Elsevier, Amsterdam (1988)
Jeong YO, Thermal Effects on Single-Well Chemical Tracer Tests for Measuring Residual Oil Saturation, Ph. D. Thesis, Houston University, Houston, U.S.A. (1989)
Kim JH, Park PW, Chung JK, Huh WW, Jeong YO, HWAHAK KONGHAK, 40(2), 169 (2002)
Kim JH, Numerical Simulation of Blast Furnace In-jected with Pulverized Coal and Fixed-bed Adsorption of Organic Acids by Activated Carbon in Heterogeneous Chemical Reaction Systems, Ph. D. Thesis, Pukyong National University, Korea (2003)
Kim JH, Jeong YO, Pendleton P, J. Ind. Eng. Chem., 10(6), 1025 (2004)
Kim TY, Kim SJ, Cho SY, J. Ind. Eng. Chem., 10(2), 188 (2004)
Komiyama H, Smith JM, AIChE J., 20, 1110 (1974)
Li FS, Yuasa A, Ebie K, Azuma Y, J. Colloid Interface Sci., 262(2), 331 (2003)
Mathews AP, Weber WJ, Chem. Eng. Commun., 25, 157 (1984)
McKay G, Allen SJ, Mcconvey IF, Otterburn MS, J. Colloid Interface Sci., 80, 323 (1981)
McKay G, AIChE J., 31, 335 (1985)
McKay G, Bino MJ, Altememi A, Water Res., 20, 435 (1986)
McKay G, Bino MJ, Water Res., 22, 279 (1988)
Morris JC, Weber WJ, Removal of Biologically Resistant Pollutants from Wastewater by Adsorption, in First international conference on water pollution (1962)
Muller G, Radke CJ, Prausnitz JM, J. Colloid Interface Sci., 103, 466 (1985)
Noll KE, Gouranis V, Hou WS, Adsorption Technology for Air and Water Pollution Control, Lewis Publishers, New York (1992)
Park JW, Lee YW, Choi DK, Lee SS, J. Ind. Eng. Chem., 9(4), 381 (2003)
Pendleton P, Zettlemoyer AC, Micale FJ, Adsorption from Solution, Academic Press, London (1983)
Pendleton P, Wong SH, Schumann R, Levay G, Denoyel R, Rouquerol J, Carbon, 35, 1141 (1997)
Pendleton P, Wu SH, J. Colloid Interface Sci., 266(2), 245 (2003)
Rodriguez-Reinoso F, Molina-Sabio M, Adv. Colloid Interface Sci., 76-77, 271 (1998)
Rouquerol J, Avnir D, Fairbridge CW, Everett DH, Haynes JM, Pernicone N, Ramsay JDF, Sing KSW, Unger KK, Pure Appl. Chem., 67, 1741 (1995)
Seader J, Henley M, Separation Process Principles, Wiley, New York, U.S.A (1998)
Sircar S, Hufton JR, Adsorption, 6, 137 (2000)
Shim WG, Chaudhary DS, Vigneswaran S, Ngo HH, Lee JW, Moon H, Korean J. Chem. Eng., 21(1), 212 (2004)
Sontheimer H, Crittenden JC, Summers S, Activated Carbon for Water Treatment, AWWA Research Foundation, Karlsruhe (1988)
Wakao H, Funazkri T, Chem. Eng. Sci., 33, 1375 (1978)
Wang ZM, Yamashita N, Wang ZX, Hoshinoo K, Kanoh H, J. Colloid Interface Sci., 276(1), 143 (2004)
Weber WJ, Smith JM, Environ. Sci. Technol., 21, 1040 (1987)
Wu H, The Influence of Activated Carbon Surface Chemistry and Physical properties and Solution Properties on Ionic Surfactant Adsorption from Dilute Solution, Ph.D. Thesis, University of South Australia, Adelaide, pp. 190 (2002)
Wu SH, Pendleton P, J. Colloid Interface Sci., 243(2), 306 (2001)
Yang RT, Gas Separation by Adsorption Processes, Imperial College, London, pp. 352 (1997)
Zettlemoyer AC, Siddiq M, Kovacs P, Micale FJ, Croat. Chem. Acta, 53, 319 (1980)
Zettlemoyer AC, Pendleton P, Micale FJ, Croat. Chem. Acta, 56, 633 (1983)
