Please use this identifier to cite or link to this item:
|Title:||A numerical study on concentration polarization and system performance of spiral wound RO membrane modules||Authors:||Zhou, W.
|Issue Date:||1-Mar-2006||Citation:||Zhou, W., Song, L., Guan, T.K. (2006-03-01). A numerical study on concentration polarization and system performance of spiral wound RO membrane modules. Journal of Membrane Science 271 (1-2) : 38-46. ScholarBank@NUS Repository. https://doi.org/10.1016/j.memsci.2005.07.007||Abstract:||The development of concentration polarization in a spiral wound reverse osmosis membrane channel and the depolarization effect of spacers are important concerns for understanding the performance of membrane processes. However, an accurate quantification of these effects derived from fundamental principles is impractical due to the complexity of the processes. In this study, a macroscopic method was developed to estimate the effect of concentration polarization on the performance of the spiral wound membrane modules. Concentration polarization in a channel filled with spacers was described as a combination of two extreme cases, namely the undisturbed concentration polarization and complete depolarization (uniform distribution across the channel height). With the introduction of a polarization factor for the degree of concentration polarization, a mathematical model was developed for the permeate flux in the spiral wound modules. The proposed model was solved numerically to simulate the performance of a long membrane channel under various operation conditions. The simulation results demonstrated that the model developed in this study was a feasible way to estimate concentration polarization in spiral wound modules. Excellent fitness was found between the numerical simulations and experimental observations of the average permeate fluxes in along membrane channel of spiral wound membrane modules. © 2005 Elsevier B.V. All rights reserved.||Source Title:||Journal of Membrane Science||URI:||http://scholarbank.nus.edu.sg/handle/10635/54682||ISSN:||03767388||DOI:||10.1016/j.memsci.2005.07.007|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on May 17, 2019
WEB OF SCIENCETM
checked on May 8, 2019
checked on May 14, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.