Removal of Heavy Metals from Multicomponent Metal Mixtures by Polymer Enhanced Ultrafiltration: Effects of pH, Ionic Strength and Conformational Changes in Polymer Structure


Kadioglu S. I. , YILMAZ L. , AYDOĞAN N., Ozbelge H. O.

SEPARATION SCIENCE AND TECHNOLOGY, vol.45, no.10, pp.1363-1373, 2010 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 45 Issue: 10
  • Publication Date: 2010
  • Doi Number: 10.1080/01496391003674274
  • Title of Journal : SEPARATION SCIENCE AND TECHNOLOGY
  • Page Numbers: pp.1363-1373
  • Keywords: heavy metal, light scattering, polyethyleneimine, polymer, ultra filtration, zinc, WATER-SOLUBLE POLYMERS, AQUEOUS-SOLUTIONS, POLYELECTROLYTE SOLUTIONS, SELECTIVE SEPARATION, RETENTION PROPERTIES, LIGHT-SCATTERING, COMPLEXATION, RECOVERY, BEHAVIOR, CONJUNCTION

Abstract

Fractional separation of industrially important heavy metals (cadmium, nickel, zinc) from binary and ternary metal mixtures by continuous mode polymer enhanced ultrafiltration was studied. Polyethyleneimine (PEI) was used as a complexation polymer. Effects of pH and ionic strength on process efficiency were investigated. To gain insight about the characteristics of binding between highly branched PEI and metal ions and effect of salt concentration on this binding were investigated by performing dynamic and static light scattering measurements. It was observed that with optimum pH and salt concentration, fractional separation of metals can be achieved.