pH dependence of electrokinetic behavior of dolomite and magnesite in aqueous electrolyte solutions

Gence N., Ozbay N.

APPLIED SURFACE SCIENCE, vol.252, no.23, pp.8057-8061, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 252 Issue: 23
  • Publication Date: 2006
  • Doi Number: 10.1016/j.apsusc.2005.10.015
  • Journal Name: APPLIED SURFACE SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.8057-8061
  • Keywords: dolomite, magnesite, electrokinetic potential, isoelectric point, pH, CARBONATES SOLUTION INTERFACE, SURFACE SPECIATION, DISSOLUTION, MODIFIERS, CALCITE
  • Anadolu University Affiliated: No

Abstract

In this paper. electrokinetic potential and isoelectric point of dolomite (CaMg(CO3)2) and magnesite (MgCO3) were determined. The effect of various ions such as Mg2+, Ca2+, Na+ and CO32- on surface properties of dolomite and magnesite were also examined. Isoelectric points of dolomite and magnesite were determined as 6.3 and 6.8, respectively, in the absence of any electrolyte. H+ and OH- ions are the potential determining ions of magnesite and dolomite, as predicted by electrokinetic potential studies. (c) 2005 Elsevier B.V. All rights reserved.