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Experimental determination of the hydrodynamic forces within nanofiltration membranes and evaluation of the current theoretical descriptions / Darren Oatley-Radcliffe; Steffan R. Williams; Thomas J. Ainscough; Christopher Lee; Daniel Johnson; Paul Williams

Separation and Purification Technology, Volume: 149, Pages: 339 - 348

Swansea University Authors: Darren, Oatley-Radcliffe, Daniel, Johnson, Paul, Williams

DOI (Published version): 10.1016/j.seppur.2015.05.041

Abstract

In this study a series of different molecular weight PEG solutions have been characterised for particle sizeand the results have been used, in conjunction with several other techniques, to determine the pore sizeof the Nadir UH004 membrane. The resulting information, in conjunction with experimental...

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Published in: Separation and Purification Technology
Published: 2015
URI: https://cronfa.swan.ac.uk/Record/cronfa22140
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Abstract: In this study a series of different molecular weight PEG solutions have been characterised for particle sizeand the results have been used, in conjunction with several other techniques, to determine the pore sizeof the Nadir UH004 membrane. The resulting information, in conjunction with experimentally determinedrejection profiles for the PEG solutions, has then been used to back calculate the hindrance factorsfor nanofiltration rejection theory. These experimentally derived values obtained for the hindrance factorswere found to be in close agreement with the widely accepted theoretical predictions derived fromhydrodynamic theory for micro and ultrafiltration. To our knowledge, this is the first experimental validationof these hindrance factors for nanofiltration and suggests that the correlations found throughoutthe literature are accurate enough for the calculation of hindrance factors describing the hydrodynamicdrag forces experienced by a solute inside a nanopore.
College: College of Engineering
Start Page: 339
End Page: 348