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Experimental determination of the hydrodynamic forces within nanofiltration membranes and evaluation of the current theoretical descriptions
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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
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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...
| Published in: | Separation and Purification Technology |
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| Published: |
2015
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa22140 |
| 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. |
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| College: |
Faculty of Science and Engineering |
| Start Page: |
339 |
| End Page: |
348 |