Effect of dissolved oxygen concentration and light intensity on photocatalytic degradation of phenol

M. Subramanian; Aravamudan Kannan

Korean Journal of Chemical Engineering, Vol.25, No.6, 1300-1308, November, 2008

DOI10.1007/s11814-008-0213-0 Export Citation

Effect of dissolved oxygen concentration and light intensity on photocatalytic degradation of phenol

M. Subramanian, and Aravamudan Kannan^†

Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai, Tamil Nadu 600 036, India, Korea

E-mail:

Catalyst loading is an important parameter that needs to be optimized in the operation of photocatalytic slurry reactors. In this study on photocatalytic degradation of phenol, the optimum catalyst loading was found to depend mainly on the dissolved oxygen (DO) concentration in the aqueous solution, especially at higher irradiation intensities. The estimated Langmuir-Hinshelwood (L-H) kinetics constants were found to vary with light intensity and dissolved oxygen concentration. The intermediate products of photocatalytic oxidation were identified.

Keywords:Photocatalysis;Optimum Catalyst Loading;Slurry Reactor;Langmuir-Hinshelwood Kinetics;Intermediates

[References]

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[2] Augugliaro V, Palmisano L, Schiavello M, Sclafani A, Appl. Catal., 69, 323 (1991)

[3] Pelizzetti E, Minero C, Electrochim. Acta, 38, 47 (1993)

[4] Davydov L, Tsekov R, Smirniotis PG, Chem. Eng. Sci., 56(16), 4837 (2001)

[5] Peral J, Casado J, Domenech J, J. Photochem. Photobiol., A, 44, 209 (1988)

[6] Terzian R, Serpone N, J. Photochem. Photobiol., A, 89, 163 (1995)

[7] Ilisz I, Laszlo Z, Dombi A, Appl. Catal. A: Gen., 180(1-2), 25 (1999)

[8] Almquist CB, Biswas P, Chem. Eng. Sci., 56(11), 3421 (2001)

[9] Wang C, Heller A, Gerischer H, J. Am. Chem. Soc., 114, 5230 (1992)

[10] Stafford U, Gray KA, Kamat PV, J. Catal., 167(1), 25 (1997)

[11] Hirakawa T, Daimon T, Kitazawa M, Ohguri N, Koga C, Negishi N, Kitazawa S, Nosaka Y, J. Phochem. Photobiol., A, 190, 58 (2007)

[12] Herrmann JM, Guillard C, Pichat P, Catal. Today, 17, 7 (1993)

[13] Chen DW, Ray AK, Appl. Catal. B: Environ., 23(2-3), 143 (1999)

[14] Kim IK, Ha HJ, Lee SK, Lee JK, Korean J. Chem. Eng., 22(3), 382 (2005)

[15] Salaices M, Serrano B, de Lasa HI, Chem. Eng. Sci., 59(1), 3 (2004)

[16] Bekkouche S, Bouhelassa M, Salah NH, Meghlaoui FZ, Desalination, 166(1-3), 355 (2004)

[17] Curco D, Malato S, Blanco J, Gimenez J, Marco P, Sol. Energy, 56(5), 387 (1996)

[18] Clescerl LS, Greenberg AE, Eaton AD, Eds., Standard methods for the examination of water and wastewater 18th edition, APHA-AWWA-WEF (1992)

[19] Hatchard CG, Parker CA, Proc. R. Soc. A, 235, 518 (1956)

[20] Gerischer H, Electrochim. Acta, 40(10), 1277 (1995)

[21] Matthews RW, Water Res., 24, 653 (1990)

[22] Brezova V, Stasko A, J. Catal., 147(1), 156 (1994)

[23] Okamoto K, Yamamoto Y, Tanaka H, Itaya A, Bull. Chem. Soc. Jpn., 58, 2023 (1985)

[24] Turchi CS, Ollis DF, J. Catal., 119, 483 (1989)

[25] Chhor K, Bocquet JF, Colbeau-Justin C, Mater. Chem. Phys., 86(1), 123 (2004)

[26] Emeline AV, Ryabchuk V, Serpone ,, J. Photochem. Photobiol., A, 133, 89 (2000)

[27] Xu Y, Langford CH, J. Photochem. Photobiol., A, 133, 67 (2000)

[28] Sobczynski A, Duczmal L, Zmudzinski W, J. Mol. Catal. A-Chem., 213(2), 225 (2004)

[29] Ollis DF, J. Phys. Chem. B, 109(6), 2439 (2005)

[30] Serpone N, J. Photochem. Photobiol., A, 104, 1 (1997)

[31] Bosco MC, Garrido M, Larrechi MS, Anal. Chim. Acta, 559, 240 (2006)

[32] Sun B, Smirniotis PG, Catal. Today, 88(1-2), 49 (2003)

[33] Zhang L, Kanki T, Sano N, Toyoda A, Environ. Monit. Assess., 115, 395 (2006)