Effect of cyclic changes in temperature and pressure on permeation properties of composite polyamide seawater reverse osmosis membranes

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DOIResolve DOI: http://doi.org/10.1080/01496395.2010.502552
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TypeArticle
Journal titleSeparation Science and Technology
ISSN0149-6395
Volume46
Issue1
Pages1426; # of pages: 13
SubjectCluster sizes; Cyclic changes; Cyclic changes in temperature and pressure; Feed water temperatures; Film theory; Film theory model; Membrane compaction; Membrane permeability; Membrane permeability hysteresis; Membrane porosity; Memory effects; NaCl solution; Net effect; Permeate flux; Permeation properties; Pure water; Seawater reverse osmosis; Solute rejection; Spiral wound; Theory model; Transmembrane pressures; Water study; Compaction; Composite membranes; Hysteresis; Pressure effects; Reverse osmosis; Saline water; Seawater effects; Sodium chloride; Osmosis membranes
AbstractThe effects of cyclic changes in feed water temperature and pressure on permeate flux, solute rejection, and compaction in spiral wound composite polyamide seawater reverse osmosis membranes were examined with pure water and 4% NaCl solutions. A membrane permeability hysteresis or memory effect due to the up and down temperature and pressure sequences was only seen with the saline water studies. However, the observed changes appeared to be reversible and were consistent with the Spiegler-Kedem/ Film Theory and the Kimura-Sourirajan Analysis/ Film Theory models. The overall results suggest that the net effect on permeance and solute rejection is the consequence of several interactions with feed/operating temperatures affecting membrane porosity and water/solute cluster size, and transmembrane pressure influencing membrane compaction. © Taylor & Francis Group, LLC.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC)
Peer reviewedYes
NPARC number21271612
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Record identifier79ebdadb-fdcf-4073-9e62-d02432afeaec
Record created2014-03-24
Record modified2016-05-09
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