Journal
CHEMICAL ENGINEERING & TECHNOLOGY
Volume 38, Issue 4, Pages 585-594Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ceat.201400654
Keywords
Concentration polarization; Modeling; Permeate flux; Rejection rate; Reverse osmosis
Categories
Funding
- Conseil Regional Provence-Alpes-Cote d'Azur
- Ecole Centrale de Marseille
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The performance of reverse osmosis and tight nanofiltration with flat-sheet membranes can be predicted accurately. The proposed numerical model solves the local momentum and mass conservation equations in the module's feed channel with solution-diffusion boundary conditions. Both qualitative and quantitative predictions of the permeate flux and of the rejection rate are obtained with an accuracy depending on the limitations of the solution-diffusion model for describing membrane mass transport and on the value of solute permeability. As an extension of the applications to plate-and-frame modules, the ability to describe the performance of processes carried out with spiral-wound modules is also tested with own desalination experiments and with data from the literature.
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