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Received April 16, 2003
Accepted December 18, 2003
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Numerical and Experimental Study on the Biofiltration of Toluene Vapor
Department of Chemical Engineering, Chungnam National University, Daejeon 305-764, Korea
hchoi@cnu.ac.kr
Korean Journal of Chemical Engineering, May 2004, 21(3), 680-688(9), 10.1007/BF02705505
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Abstract
We have solved both steady state and transient problems on the biofiltration of toluene vapor. The effect of inlet toluene concentration and inlet gas-flow rate on the removal rate of toluene and the elimination capacity of a lab-scale biofilter has been investigated. In this study, the effectiveness factor was a function of pollutant concentration. The dynamic solutions show good agreement with experimental results. At an inlet toluene concentration of 100 ppm, the diffusion of toluene into biofilm was obviously a rate determining step. Above 200 ppm, however, biofilm already showed full activity. The steady-state simulation confirmed that the change of elimination capacity obtained by increasing only inlet toluene concentration was the same as that obtained by increasing only flow rate of contaminated air. The maximum possible performance is about 20 g/m3h with no addition of nutrients.
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Fan LS, Leyva-Ramos R, Wisecarver KD, Zehner BJ, Biotechnol. Bioeng., 35, 279 (1990)
Hodge DS, Devinny JS, J. Environ. Eng.-ASCE, 121(1), 21 (1995)
Jennings PA, Snoeyink VL, Chian ESK, Biotechnol. Bioeng., 18, 1249 (1976)
Lim KH, Lee EJ, Korean J. Chem. Eng., 20(2), 315 (2003)
Oh KJ, Kim YS, Cho SK, Kim D, Korean J. Chem. Eng., 19(6), 1026 (2002)
Ottengraf SPP, Biotechnol. Bioeng., 19, 1411 (1977)
Shareefdeen Z, Baltzis BC, Oh YS, Bartha R, Biotechnol. Bioeng., 41, 512 (1993)
Shareefdeen Z, Baltzis BC, "Biological Removal of Hydrophobic Solvent Vapors from Airstreams," In Advances in Bioprocess Engineering, Galindo, E., Ramirez, O.T., Eds., Kluwer Academic Publishers, Dordrecht, The Natherlands (1994)
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Yoon IK, Kim CN, Park CH, Korean J. Chem. Eng., 19(6), 954 (2002)
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