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Received February 11, 2003
Accepted July 22, 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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Mathematical Modeling of Granular Activated Carbon (GAC) Biofiltration System
Wang Geun Shim
Durgananda Singh Chaudhary1
Saravanamuthu Vigneswaran1
Huu-Hao Ngo1
Jae Wook Lee2
Hee Moon†
Faculty of Applied Chemistry, Chonnam National University, Gwangju 500-757, Korea 1Environmental Engineering Group, University of Technology, Sydney, P. O. Box 123, Broadway, NSW 2007, Australia 2Department of Chemical Engineering, Seonam University, Namwon 590-711, Australia
hmoon@chonnam.ac.kr
Korean Journal of Chemical Engineering, January 2004, 21(1), 212-220(9), 10.1007/BF02705401
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Abstract
In this study, a mathematical model of a fixed bed Granular Activated Carbon (GAC) biofiltration system was developed to predict the organic removal efficiency of the filter. The model consists of bulk transportation, adsorption, utilization, and biodegradation of organics. The variation of the specific surface area due to biofilm growth and the effect of filter backwash were also included in the model. The intrapellet diffusion and the diffusion of substrate in the biofilm were described by linear driving force approximation (LDFA) method. Biodegradation of organics was described by Monod kinetics. Sips adsorption isotherm was used to analyze the initial adsorption equilibrium of the system. The model showed that the organic removal efficiency of the biofilter greatly depends on the parameters related to the biological activities such as the maximum rate of substrate utilization (kmax) and biomass yield (Y) coefficients. Parameters such as suspended cell concentration (Xs) and decay constant (Kd) had little effects on the model simulation results. The filter backwash also had no significant impact on the performance of the biofilter.
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Alonso C, Suidan MT, Kim BR, Kim BJ, Environ. Sci. Technol., 32, 3118 (1998)
Andrews GF, Tien C, AIChE J., 27, 396 (1981)
Brown PN, Byrne GD, Hindmarsh AC, SIAM J. Sci. Stat. Comput., 10, 1038 (1989)
Chang HT, Rittmann BE, Environ. Sci. Technol., 21, 273 (1987)
Chang HT, Rittmann BE, Environ. Sci. Technol., 21, 280 (1987)
Den W, Pirbazari M, AIChE J., 48(9), 2084 (2002)
Hozalski RM, Bouwer EJ, Water Res., 1, 198 (2001)
Kim SH, Kim TW, Cho DL, Lee DH, Kim JC, Moon H, Korean J. Chem. Eng., 19(5), 895 (2002)
Kim SH, Min BM, Korean J. Chem. Eng., 10(1), 18 (1993)
Kim SH, Ngo HH, Chaudhary D, Kim JC, Vigneswaran S, Moon H, Korean J. Chem. Eng., 19(5), 888 (2002)
Kim TY, Kim SJ, Cho SY, Korean J. Chem. Eng., 18(5), 755 (2001)
Lu P, Huck PM, "Evaluation of Methods for Measuring Biomass and Biofilm Thickness in Biological Drinking Water Treatment," AWWA Water Quality Technology Conference (WQTC), Miami, Florida, 1415 (1993)
Ravindran V, Badriyha BN, Pirbazari M, Kim SH, Appl. Mathe. Comp., 76, 99 (1996)
Servais P, Billen G, Ventresque C, Bablon GP, J. Am. Water Works Assoc., 83, 62 (1991)
Shim WG, Chaudhary D, Vigneswaren S, Ngo HH, Lee JW, Moon H, "Mathematical Modeling of Granular Activated Carbon Biofilter," ISST02-JK The Six International Symposium on Separation Technology, 429 (2002)
Speitel GE, Dovantzis K, DiGiano FA, J. Environ. Eng.-ASCE, 113, 32 (1987)
Tien C, "Adsorption Calculations and Modeling," Butterworth-Heinemann: Singapore (1994)
Villadesen JV, Stewart WE, Chem. Eng. Sci., 22, 1483 (1967)
Yang RT, "Gas Separation by Adsorption Processes," Butterworths, Boston (1986)
Ying W, Weber WJ, J. Water Pollut. Contr. Fed., 51, 2661 (1979)
