Evaluation of nanofiltration for diafiltration of dyes solutios: Experimental observations and model evaluation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F09%3A00008623" target="_blank" >RIV/00216275:25310/09:00008623 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Evaluation of nanofiltration for diafiltration of dyes solutios: Experimental observations and model evaluation
Original language description
Diafiltration is used to allow a high level of desalting to be achieved. However, the success of the application of NF for the desalting is related, among other factors, with magnitude of the permeate fluxes decline. We show that the dye and salt concentration, the salt rejection and pressure applied are responsible for the decrease of flux values as well as for desalting purposes. We found in the process of desalination of aqueous dye-salt solutions by polymeric NF membranes that cake layer formation of dye molecules on membrane surface, especially at low salt concentrations, was the principal cause of flux decline. Results demonstrate how the mathematical modelling of NF and description of discontinuous diafiltration by periodically adding solvent atconstant pressure difference can be important for prediction of the diafiltration process in the manufacture of liquid dyes.
Czech name
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Czech description
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Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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