Photocatalytic degradation of toluene in a staged fluidized bed reactor using TiO2/silica gel

Hsiu-Po Kuo; Shang-Wen Yao; An-Ni Huang; Wan-Yi Hsu

Korean Journal of Chemical Engineering, Vol.34, No.1, 73-80, January, 2017

DOI10.1007/s11814-016-0248-6 Export Citation

Photocatalytic degradation of toluene in a staged fluidized bed reactor using TiO2/silica gel

Hsiu-Po Kuo^{1, 2, †}, Shang-Wen Yao^{1, 3}, An-Ni Huang^{1, 4}, and Wan-Yi Hsu^{1, 3}

¹Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 33302, Taiwan
²Department of Otorhinolaryngology, Chang Gung Memorial Hospital, Linkou, Taoyuan 33305, Taiwan
³, Taiwan
⁴Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, Hiroshima 739-8527, Japan

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Relatively high concentration toluene is photocatalytically degraded in a multi-stage fluidized bed reactor continuously. The fluidizing media are titanium dioxide deposited silica gel particles, which are prepared by the doping sol-gel method. The effects of the Ti/Si atomic ratio, the inlet gas flow rates, and the number of the stages on the toluene removal efficiency were evaluated. The highest toluene removal efficiency is obtained when the fluidizing media are with the Ti/Si atomic ratio of 1.25. The apparent reaction orders are 0.4-0.5 for the single-stage system and 0.7 for the two-stage system, respectively. With an inlet toluene concentration of 1,000 ppm, a relative humidity of 30% and a volumetric flow rate of 10 L/min, the removal efficiency of toluene at the steady state is as high as 80% and is maintained in the 6-hr experimental time.

Keywords:Fluidized Bed;Multi-stage;Toluene;Photocatalytic Degradation

[References]

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Kuo HP, Wu CT, Hsu RC, Powder Technol., 195(1), 50 (2009)
Nouri H, Habibi-Yangjeh A, Adv. Powder Technol., 25(3), 1016 (2014)
Selishchev DS, Kolinko PA, Kozlov DV, J. Photochem. Photobiol. A-Chem., 229, 11 (2012)
Lam SM, Sin JC, Mohamed AR, Korean J. Chem. Eng., 27(4), 1109 (2010)
Dashliborun AM, Sotudeh-Gharebagh R, Hajaghazadeh M, Kakooei H, Afshar S, Chem. Eng. J., 226, 59 (2013)
Kuo HP, Wu CT, Hsu RC, Powder Technol., 210(3), 225 (2011)
Linsebigler AL, Lu GQ, Yates JT, Chem. Rev., 95(3), 735 (1995)
Jeong J, Sekiguchi K, Sakamoto K, Chemosphere, 57, 663 (2004)
Tasbihi M, Stangar UL, Cernigoj U, Jirkovsky J, Bakardjieva S, Tusar NN, Catal. Today, 161(1), 181 (2011)
Takeda N, Torimoto T, Sampath S, Kuwabata S, Yoneyama H, J. Phys. Chem., 99(24), 9986 (1995)
Alijani S, Moghaddam AZ, Vaez M, Towfighi J, Korean J. Chem. Eng., 30(10), 1855 (2013)
Yue PL, Khan F, Chem. Eng. Sci., 38, 1893 (1983)
Si CD, Zhou J, Gao HT, Liu GJ, Adv. Powder Technol., 24(1), 295 (2013)
Geldart D, Gas fluidization technology, Johnson Wiley & Sons, Chapter 1 (1986).
Tang H, Chang S, Wu K, Tang G, Fu Y, Liu Q, Yang X, RSC Adv., 6, 63117 (2016)
Sing KSW, Everett DH, Haul RAW, Moscou L, Pierotti RA, Rouquerol J, Siemieniewska T, Pure Appl. Chem., 57, 603 (1985)
Xiang QJ, Lv KL, Yu JG, Appl. Catal. B: Environ., 96(3-4), 557 (2010)
Lin YL, Wang TJ, Jin Y, Powder Technol., 123(2-3), 194 (2002)

[Referenced By]

[1] Fujihira M, Satoh Y, Osa T, Nature, 293, 206 (1981)

[2] Kuo HP, Wu CT, Hsu RC, Powder Technol., 195(1), 50 (2009)

[3] Nouri H, Habibi-Yangjeh A, Adv. Powder Technol., 25(3), 1016 (2014)

[4] Selishchev DS, Kolinko PA, Kozlov DV, J. Photochem. Photobiol. A-Chem., 229, 11 (2012)

[5] Lam SM, Sin JC, Mohamed AR, Korean J. Chem. Eng., 27(4), 1109 (2010)

[6] Dashliborun AM, Sotudeh-Gharebagh R, Hajaghazadeh M, Kakooei H, Afshar S, Chem. Eng. J., 226, 59 (2013)

[7] Kuo HP, Wu CT, Hsu RC, Powder Technol., 210(3), 225 (2011)

[8] Linsebigler AL, Lu GQ, Yates JT, Chem. Rev., 95(3), 735 (1995)

[9] Jeong J, Sekiguchi K, Sakamoto K, Chemosphere, 57, 663 (2004)

[10] Tasbihi M, Stangar UL, Cernigoj U, Jirkovsky J, Bakardjieva S, Tusar NN, Catal. Today, 161(1), 181 (2011)

[11] Takeda N, Torimoto T, Sampath S, Kuwabata S, Yoneyama H, J. Phys. Chem., 99(24), 9986 (1995)

[12] Alijani S, Moghaddam AZ, Vaez M, Towfighi J, Korean J. Chem. Eng., 30(10), 1855 (2013)

[13] Yue PL, Khan F, Chem. Eng. Sci., 38, 1893 (1983)

[14] Si CD, Zhou J, Gao HT, Liu GJ, Adv. Powder Technol., 24(1), 295 (2013)

[15] Geldart D, Gas fluidization technology, Johnson Wiley & Sons, Chapter 1 (1986).

[16] Tang H, Chang S, Wu K, Tang G, Fu Y, Liu Q, Yang X, RSC Adv., 6, 63117 (2016)

[17] Sing KSW, Everett DH, Haul RAW, Moscou L, Pierotti RA, Rouquerol J, Siemieniewska T, Pure Appl. Chem., 57, 603 (1985)

[18] Xiang QJ, Lv KL, Yu JG, Appl. Catal. B: Environ., 96(3-4), 557 (2010)

[19] Lin YL, Wang TJ, Jin Y, Powder Technol., 123(2-3), 194 (2002)