Experimental determination of the hydrodynamic forces within nanofiltration membranes and evaluation of the current theoretical descriptions

Darren L. Oatley-Radcliffe, Steffan R. Williams, Thomas J. Ainscough, Christopher Lee, Daniel J. Johnson, Paul M. Williams

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

In this study a series of different molecular weight PEG solutions have been characterised for particle size and the results have been used, in conjunction with several other techniques, to determine the pore size of the Nadir UH004 membrane. The resulting information, in conjunction with experimentally determined rejection profiles for the PEG solutions, has then been used to back calculate the hindrance factors for nanofiltration rejection theory. These experimentally derived values obtained for the hindrance factors were found to be in close agreement with the widely accepted theoretical predictions derived from hydrodynamic theory for micro and ultrafiltration. To our knowledge, this is the first experimental validation of these hindrance factors for nanofiltration and suggests that the correlations found throughout the literature are accurate enough for the calculation of hindrance factors describing the hydrodynamic drag forces experienced by a solute inside a nanopore.

Original languageEnglish
Pages (from-to)339-348
Number of pages10
JournalSeparation and Purification Technology
Volume149
DOIs
Publication statusPublished - 15 Jun 2015
Externally publishedYes

Fingerprint

Nanofiltration membranes
Nanofiltration
Polyethylene glycols
Hydrodynamics
Nanopores
Ultrafiltration
Pore size
Drag
Molecular weight
Particle size
Membranes

Keywords

  • Characterisation
  • Hindrance factors
  • Hydrodynamic
  • Nanofiltration

ASJC Scopus subject areas

  • Analytical Chemistry
  • Filtration and Separation

Cite this

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

In: Separation and Purification Technology, Vol. 149, 15.06.2015, p. 339-348.

Research output: Contribution to journalArticle

Oatley-Radcliffe, Darren L. ; Williams, Steffan R. ; Ainscough, Thomas J. ; Lee, Christopher ; Johnson, Daniel J. ; Williams, Paul M. / Experimental determination of the hydrodynamic forces within nanofiltration membranes and evaluation of the current theoretical descriptions. In: Separation and Purification Technology. 2015 ; Vol. 149. pp. 339-348.
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