Mass Transfer Characteristics and Overall Mass Transfer Coefficient in the Ozone Contactor

Jung A Rhim; Jeong Hyo Yoon

Korean Journal of Chemical Engineering, Vol.22, No.2, 201-207, March, 2005

DOI10.1007/BF02701485 Export Citation

Mass Transfer Characteristics and Overall Mass Transfer Coefficient in the Ozone Contactor

Jung A Rhim^†, and Jeong Hyo Yoon¹

School of Environmental Science, Catholic University of Pusan, Busan 609-757, Korea
¹Department of Chemistry, Pusan National University, Busan 609-735, Korea

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The overall mass transfer coefficient kLa, F in the flow characteristics was determined by the measurement of the diffusivity of ozone, density of aqueous solution, and viscosity. However, the measured values kLa, F in the range of 0.0096-0.0622 min-1 show large changes in hydraulic retention time, and the dissolved ozone concentration CL, F presented under 0.1 mg/l is lower than the dissolved ozone observed. The overall mass transfer coefficient kLa,M in the ozone decomposition was determined by measurement of the equilibrium dissolved ozone, overall decomposition rate constant, and overall Henry’s law constant. The measured values kLa, M are in the range of 0.0441-0.0749 min-1, and they present small changes depending on the hydraulic retention time. Furthermore, the measured dissolved ozone concentration CL,M presents a larger value than the CL, F. Then, the kLa,M is selected as an input overall mass transfer coefficient to predict the dissolved ozone requirement in the ozone contactor.

Keywords:Ozone Contactor;Overall Mass Transfer Coefficient;Henry’s Law Constant;Decomposition Rate Constant;Gas Holdup

[References]

Bingham, Fluidity and Plasticity, McGraw-Hill, New York, 340 (1922)
Carphentier JC, Advances in Chemical Engineering, Academic Press, 11, New York (1981)
Choi KH, Lee WK, Korean J. Chem. Eng., 9(2), 66 (1992)
Choi KH, Korean J. Chem. Eng., 18(2), 240 (2001)
Clesceri LS, Greenburg AE, Trussel RR, Franson MAH, Standard Methods for the Examination of Water and Wastewater, 16th Ed., APHA, AWWA, WPCF, 399 (1985)
Danckwerts PV, Gas-liquid Reaction, McGraw-Hill, New York, 17 (1970)
Kang Y, Min BT, Nah JB, Kim SD, HWAHAK KONGHAK, 28(5), 560 (1990)
Kang YS, Kim JW, Lee WK, HWAHAK KONGHAK, 24(5), 371 (1986)
Koh J, Kim B, Lee J, Rhee BS, HWAHAK KONGHAK, 27(1), 23 (1989)
Lee JE, Choi WS, Lee JK, Korean J. Chem. Eng., 20, 943 (2003)
Lee JE, Lee JK, Korean J. Chem. Eng., 19(4), 703 (2002)
Mas S, Ossard F, Ghommidh C, Biotechnol. Lett., 23(14), 1125 (2001)
Rhim JA, Korean Society of Env. Eng. J., 25, 1394 (2003)
Sotelo JL, Beltran FJ, Benitez FJ, Beltran-Heredia J, Water Res., 23, 1239 (1989)
Yoon JH, Decomposition of Microcystin-LR by Ozonation in Cylindrical Reactor, Ph. D. Dissertation, Pusan National University (1999)
Yoon JH, Rhim JA, Kim YT, Park TJ, Kim DY, Korean Society of Env. Eng. J., 21, 711 (1999)
Zhou H, Smith D, Water Res., 34, 909 (2000)

[Referenced By]

[1] Bingham, Fluidity and Plasticity, McGraw-Hill, New York, 340 (1922)

[2] Carphentier JC, Advances in Chemical Engineering, Academic Press, 11, New York (1981)

[3] Choi KH, Lee WK, Korean J. Chem. Eng., 9(2), 66 (1992)

[4] Choi KH, Korean J. Chem. Eng., 18(2), 240 (2001)

[5] Clesceri LS, Greenburg AE, Trussel RR, Franson MAH, Standard Methods for the Examination of Water and Wastewater, 16th Ed., APHA, AWWA, WPCF, 399 (1985)

[6] Danckwerts PV, Gas-liquid Reaction, McGraw-Hill, New York, 17 (1970)

[7] Kang Y, Min BT, Nah JB, Kim SD, HWAHAK KONGHAK, 28(5), 560 (1990)

[8] Kang YS, Kim JW, Lee WK, HWAHAK KONGHAK, 24(5), 371 (1986)

[9] Koh J, Kim B, Lee J, Rhee BS, HWAHAK KONGHAK, 27(1), 23 (1989)

[10] Lee JE, Choi WS, Lee JK, Korean J. Chem. Eng., 20, 943 (2003)

[11] Lee JE, Lee JK, Korean J. Chem. Eng., 19(4), 703 (2002)

[12] Mas S, Ossard F, Ghommidh C, Biotechnol. Lett., 23(14), 1125 (2001)

[13] Rhim JA, Korean Society of Env. Eng. J., 25, 1394 (2003)

[14] Sotelo JL, Beltran FJ, Benitez FJ, Beltran-Heredia J, Water Res., 23, 1239 (1989)

[15] Yoon JH, Decomposition of Microcystin-LR by Ozonation in Cylindrical Reactor, Ph. D. Dissertation, Pusan National University (1999)

[16] Yoon JH, Rhim JA, Kim YT, Park TJ, Kim DY, Korean Society of Env. Eng. J., 21, 711 (1999)

[17] Zhou H, Smith D, Water Res., 34, 909 (2000)