Abstract
The Homogeneous Surface Diffusion Model (HSDM) has been successfully used to predict the adsorption kinetics for several chemicals inside batch adsorber vessels. In addition to the adsorption equilibrium, this model is based on external mass transfer and surface diffusion. This paper presents the determination of the surface diffusion coefficient (D s) using a differential column batch reactor (DCBR). The adsorption kinetics for three pesticides onto granular activated carbon have been established experimentally. Their corresponding three diffusion coefficients were determined by fitting the computer simulations to the experimental concentration-time data. The results show that this original apparatus increases by an order of magnitude the range of reachable diffusion coefficient compared to perfectly mixed contactors. Moreover the computed D s values are more accurate because of the better assessment of the external mass transfer coefficient (k f) for fixed beds.
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References
Al Duri, B., “Adsorption Modelling and Mass Transfer,” Use of Adsorbents for the Removal of Pollutants from Wastewaters, Ch. 7, pp. 133–173, CRC Press, 1996.
Crittenden, J.C., D.W. Hand, H. Arora, and B.W. Lykins, “Considerations for GAC Treatment of Organic Chemicals,” J. Am. Water Works Assoc., 79(1), 74–82 (1987).
Ganguly, S.K. and A.N. Goswamy, “Surface Diffusion Kinetics in the Adsorption of Acetic Acid on Activated Carbon,” Sep. Sci. Technol., 31(9), 1267–1278 (1996).
Gicquel, L., D.Wolbert, and A. Laplanche, “Adsorption of Atrazine by Powdered Activated Carbon: Influence of Dissolved Organic and Mineral Matter of Natural Waters,” Environ. Technol., 18, 467–478 (1997).
Hand, D.W., J.C. Crittenden, and W.E. Thacker, “User-Oriented Batch Reactor Solutions to the Homogeneous Surface Diffusion Model,” J. Environ. Eng. Div., 109(1), 82–101 (1983).
Komiyama, H. and J.M. Smith, “Surface Diffusion in Liquid-Filled Pores,” AIChE J., 20(6), 1110–1117 (1974).
McKay, G. and B. Al Duri, “Multicomponent Dye Adsorption onto Carbon Using a Solid Diffusion Mass-Transfer Model,” Ind. Eng. Chem. Res., 30(2), 385–395 (1991).
Noll, K.E., V. Gouranis, and W.S. Hou, Adsorption Technology for Air and Water Pollution Control, Lewis Publishers, 1992.
Qi, S., S.S. Adham, V.L. Snoeyink, and B.W. Lykins, “Prediction and Verification of Atrazine Adsorption by PAC,” J. Environ. Eng. Div., 120(1), 202–218 (1994).
Rosen, J.B., “Kinetics in a Fixed Bed System for a Solid Diffusion into Spherical Particles,” J. Chem. Phys., 20(3), 387–394 (1952).
Roy, D., G.T.Wang, and D.D. Adrian, “A Simplified Solution Technique for Carbon Adsorption Model,” Water Res., 27(6), 1033–1040 (1993).
Ruthven, D.M., Principles of Adsorption and Adsorption Processes, Wiley & Sons Publishers, USA, 1984.
Tien, C., Adsorption Calculations and Modeling, Butterworth-Heinemann Series in Chemical Engineering, Butterworth-Heinemann Publishers, USA, 1994.
Traegner, U.K. and M.T. Suidan, “Parameter Evaluation for Carbon Adsorption,” J. Environ. Eng. Div., 115(12), 109–128 (1989).
Villadsen, J.V. andW.E. Stewart, “Solution of Boundary-Value Problems by Orthogonal Collocations,” Chem. Eng. Sci., 22, 1483–1501 (1978).
Wakao, N. and T. Funazkri, “Effect of Fluid Dispersion Coefficients on Particle-to-Fluid Mass Transfer Coefficients in Packed Beds,” Chem. Eng. Sci., 33, 1375–1384 (1978).
Walker, G.M. and L.R.Weatherley, “Kinetics of Acid Dyes Adsorption onto GAC,” Water Res., 33(8), 1895–1899 (1999).
Weber,T.W. and R.K. Chakravorti, “Pore and Solid Diffusion Models for Fixed-Bed Adsorbers,” AIChE J., 20(2), 228–238 (1974).
Weber, W.J. and J.M. Smith, “Simulation and Design Models for Adsorption Processes,” Environ. Sci. Technol., 21(11), 1040–1050 (1987).
Zhou, M.L., Mod´elisation de l'absorption sur charbon actif. PhD Thesis, University of Rennes 1, France, 1992.
Zhou, M.L. and G. Martin, “Adsorption Kinetics Modelling in Batch Reactor onto Activated Carbon by the Model HSDM,” Environ. Technol., 16, 827–838 (1995).
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Baup, S., Jaffre, C., Wolbert, D. et al. Adsorption of Pesticides onto Granular Activated Carbon: Determination of Surface Diffusivities Using Simple Batch Experiments. Adsorption 6, 219–228 (2000). https://doi.org/10.1023/A:1008937210953
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DOI: https://doi.org/10.1023/A:1008937210953