Mathematical modeling of multiple solutes system for reverse osmosis process in palm oil mill effluent (POME) treatment

被引：0
|
作者：
Ahmad, A.L. [1 ]
Chong, M.F. [1 ]
Bhatia, S. [1 ]
机构：
[1] School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus, Seri Ampangan, 14300 Nibong Tebal, Penang, Malaysia
来源：
Chemical Engineering Journal | 2007年 / 132卷 / 1-3期
关键词：
A membrane transport model suitable for the multiple solutes system in reverse osmosis is developed for unsteady-state simulation and prediction of membrane filtration dynamics in terms of permeate flux and concentration of each solute. This model is based on coupling the concentration polarization model using unsteady-state differential material balance and extended Spiegler-Kedem model. This model is characterized by the parameters solute diffusivity in the concentration polarization layer (Dbi); reflection coefficient (σi); osmotic constant (ai); hydraulic permeability constant (Lp); mass transfer coefficient (ki) and solute permeability coefficient (Pii). These parameters are estimated by using the Levenberg-Marquardt method coupled with the Gauss-Newton algorithm using the experimental data. The experimental data were obtained from the treatment of pretreated palm oil mill effluent (POME) as a feed in the pilot plant scale reverse osmosis system. The pretreated POME composed of a ternary system with the solutes of carbohydrate constituents; protein and ammoniacal nitrogen. The simulation results show a good agreement with the experimental data. The proposed model is suitable for predicting the performance of multiple solutes in a reverse osmosis process. The concentration of each solute present is correlated with the COD of the permeate stream. © 2006 Elsevier B.V. All rights reserved;
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页码：183 / 193
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