Photooxidation of anionic surfactant (sodium lauryl sulfate) in a three-phase fluidized bed reactor using TiO2/SiO2 photocatalyst

Wooseok Nam; Kyungchan Woo; GuiYoung Han

Journal of Industrial and Engineering Chemistry, Vol.15, No.3, 348-353, May, 2009

DOI10.1016/j.jiec.2008.11.006 Export Citation

Photooxidation of anionic surfactant (sodium lauryl sulfate) in a three-phase fluidized bed reactor using TiO2/SiO2 photocatalyst

Wooseok Nam, Kyungchan Woo, and GuiYoung Han^†

Dept. of Chemical Engineering, Sungkyunkwan University, Suwon, 440-746, South Korea

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The photooxidation of sodium lauryl sulfate (=sodium dodecyl sulfate) in two different types of threephase fluidized bed reactors was investigated. A low concentration of sodium lauryl sulfate (0.1-0.6 mM) in aqueous solution was photocatalytically decomposed by a TiO2 photocatalyst immobilized on a porous SiO2 support. In order to determine the optimum operating conditions in the fluidized beds, the effects of the air flow rate, amount of catalyst, initial concentration of surfactant, light source power, and pH on the photooxidation rate were investigated. From the experimental results, it was observed that the superficial air velocity was an important parameter in determining the reaction rate for both reactors. The photooxidation reaction rate increased with increasing UV lamp power and the experimentally obtained reaction rates showed good agreement with the Langmuir adsorption model. Also, a higher reaction rate was observed when the aqueous solution was acidic.

Keywords:Photocatalyst;Surfactant;Sodium lauryl sulfate;TiO2;Fluidized bed

[References]

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Kim Y, Lee J, Jeong H, Lee Y, Um MH, Jeong KM, Yeo MK, Kang M, J. Ind. Eng. Chem., 14(3), 396 (2008)
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Tang WZ, An H, Chemosphere, 31, 4157 (1995)
Garcia-Calvo E, Rodriguez A, Prados A, Klein J, Chem. Eng. Sci., 54(13-14), 2359 (1999)
Son S, Lee DH, Kim SD, Sung SW, J. Ind. Eng. Chem., 13(2), 257 (2007)
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Shah YT, Gas.Liqiud.Solid Reactor Design, McGraw-Hill, New York (1979)
Yang WC, Keairns DL, AIChe. Symp. Ser., 74, 218 (1978)
Nam WS, Kim MJ, Han GY, Theories Appl. Chem. Eng., 10, 781 (2004)
Greengerg AE, Clesceri LS, Eaton AD, Standard Method for Examination of Water and Waste Water, 19th, American Public Health Association, Washington, DC (1995)
Nam WS, Kim JM, Han GY, Chemosphere, 47, 1019 (2002)
Kiriakidou F, Kondarides DI, Verykios WE, Catal. Today, 54, 199 (1999)
Lakshmi S, Renganathan R, Fujita S, J. Photochem. Photobiol. A, 88, 163 (1995)
Hidaka H, Zhao J, Suenaga S, Serpone N, Pelizzetti E, J. Jpn. Oil. Chem. Soc., 39, 963 (1990)
Usman K, Adesina AA, Lucien FP, Waite TD, Ind. Eng. Chem. Res., 40(23), 5095 (2001)
Gerischer H, Acta, 38, 3 (1993)

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[1] Haarstrick A, Kut OM, Heinzle E, Sci. Technol., 30, 817 (1996)

[2] Kim Y, Lee J, Jeong H, Lee Y, Um MH, Jeong KM, Yeo MK, Kang M, J. Ind. Eng. Chem., 14(3), 396 (2008)

[3] Hoffmann MR, Martin ST, Choi WY, Bahnemann DW, Chem. Rev., 95(1), 69 (1995)

[4] Tang WZ, An H, Chemosphere, 31, 4157 (1995)

[5] Garcia-Calvo E, Rodriguez A, Prados A, Klein J, Chem. Eng. Sci., 54(13-14), 2359 (1999)

[6] Son S, Lee DH, Kim SD, Sung SW, J. Ind. Eng. Chem., 13(2), 257 (2007)

[7] Lim TH, Kim SD, Chemosphere, 47, 1019 (2004)

[8] Shah YT, Gas.Liqiud.Solid Reactor Design, McGraw-Hill, New York (1979)

[9] Yang WC, Keairns DL, AIChe. Symp. Ser., 74, 218 (1978)

[10] Nam WS, Kim MJ, Han GY, Theories Appl. Chem. Eng., 10, 781 (2004)

[11] Greengerg AE, Clesceri LS, Eaton AD, Standard Method for Examination of Water and Waste Water, 19th, American Public Health Association, Washington, DC (1995)

[12] Nam WS, Kim JM, Han GY, Chemosphere, 47, 1019 (2002)

[13] Kiriakidou F, Kondarides DI, Verykios WE, Catal. Today, 54, 199 (1999)

[14] Lakshmi S, Renganathan R, Fujita S, J. Photochem. Photobiol. A, 88, 163 (1995)

[15] Hidaka H, Zhao J, Suenaga S, Serpone N, Pelizzetti E, J. Jpn. Oil. Chem. Soc., 39, 963 (1990)

[16] Usman K, Adesina AA, Lucien FP, Waite TD, Ind. Eng. Chem. Res., 40(23), 5095 (2001)

[17] Gerischer H, Acta, 38, 3 (1993)