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.: Home > Nature and Science > 2003 > Volume 1 Number 1 > Wayne Jiang; Ronald F. Childs; Alicja M. Mika; Jam

Pore-filled Membranes Capable of Selective Negative Rejections

Wayne Jiang; Ronald F. Childs; Alicja M. Mika; Jam
Department of Chemistry and ** Department of Chemical Engineering, McMaster University, Hamilton, Ontario L8S 4M1 Canada, wenyi@chemistry.mcmaster.ca
Abstract :

Pore-filled cation-exchange membranes containing poly(styrene-sulfonic acid) have been evaluated in pressure-driven separation of inorganic salts. The membranes are capable of separating single and mixed solutesat low pressures (low fluxes). The separation performance is affected significantly by salt concentration and concentration ratio of mixed salts. The observation of negative separation of counterions particularly at low operating pressures is unique. This type of separation may allow the selective removal of multivalent couterions and their replacement by monovalent couterions. [Nature and Science 2003;1(1):21-26].

Keywords :
pore-filled membranes; pore-filling; ion-exchange; polyelectrolyte; negative rejection; nanofiltration

Date Deposited : 10 Jan 2011 14:51

Last Modified : 10 Jan 2011 17:31

Official URL: http://www.sciencepub.org/nature/0101/

Volume 1, Number 1, November 2003 , ISSN 1545-0740

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