Concentration of potassium cations in the permeate solution in the presence of N,N-dimethyl-N-2-propenyl-2-propen-1-aminium chloride homopolymer using dead-end nano-or ultrafiltration

P. Prokopovich, V. Starov, R. G. Holdich, N. Hilal

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The investigation is based on the nano-or ultrafiltration of inorganic salts in the presence of a polyelectrolyte in the feed solution. Cellulose acetate membranes are selected with a pore size of 10-20 nm. The membranes are imaged using atomic force microscope. The membrane is completely impermeable to the polyelectrolyte. Polyelectrolyte concentrations are taken in the range of 0.5-1 g/l to avoid a gel layer formation over the membrane. It is discovered that, at such low polyelectrolyte concentration, inorganic salt concentration in the permeate is higher than in the feed solution. This process therefore deviates from conventional membrane separation processes, where the permeate salt concentration is lower or equal to the salt concentration in the feed solution. It is shown that during the nano-or ultrafiltration of inorganic salts in the presence of polyelectrolyte, the ratio of salt concentration in the permeate to feed increases when the initial salt concentration in the feed solution is low. Concentration polarization has a negative impact on this concentrating effect. In the case of this investigation, KCl, KNO3, K2SO4 are taken as inorganic salts, N,N-dimethyl-N-2- propenyl-2-propen-1-aminium chloride homopolymer is selected as a polyelectrolyte.

Original languageEnglish
Pages (from-to)211-216
Number of pages6
JournalColloid Journal
Volume68
Issue number2
DOIs
Publication statusPublished - Mar 2006
Externally publishedYes

Fingerprint

Ultrafiltration
Homopolymerization
Potassium
Cations
potassium
Salts
Polyelectrolytes
Positive ions
chlorides
salts
cations
membranes
Membranes
low concentrations
poly-N,N-dimethyl-N,N-diallylammonium chloride
concentrating
cellulose
Pore size
acetates
Cellulose

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Cite this

Concentration of potassium cations in the permeate solution in the presence of N,N-dimethyl-N-2-propenyl-2-propen-1-aminium chloride homopolymer using dead-end nano-or ultrafiltration. / Prokopovich, P.; Starov, V.; Holdich, R. G.; Hilal, N.

In: Colloid Journal, Vol. 68, No. 2, 03.2006, p. 211-216.

Research output: Contribution to journalArticle

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