Competitive sorption of Cu(II), Eu(III) and U(VI) ions on dunite in aqueous solutions: a potentiometric study. (11th February 2010)

• Record Type: Journal Article
• Authors: Konstantinou, Maria; Pashalidis, Ioannis
• Is Part Of: International journal of environmental technology and management. Volume 12:Number 2-4(2010)
• Page Start: 322
• Page End: 332
• Publication Date: 2010-02-11
• Subjects: metal ions -- dunite -- surface complexes -- competition -- formation constants -- competitive sorption -- adsorption -- copper, uranium -- chemical affinity -- igneous rock -- europium -- aqueous solutions; Environmental management -- Periodicals; Green technology -- Periodicals; 333.705
• Languages: English
• ISSNs: 1466-2132

Abstract

The competitive sorption of Cu(II), Eu(III) and U(VI)) ions in aqueous solutions by dunite, has been investigated by potentiometry at pH 6, I = 0.1 M NaClO4 and 25°C. Numerical analysis of the experimental data supports the formation of inner-sphere surface complexes and allows the evaluation of the conditional formation constant of the surface complexes. The conditional formation constants of the Cu(II), Eu(III) and U(VI) complexes on dunite were found to be log β = 4.8 ± 0.4, 5.3 ± 0.7 and 12.5 ± 0.6, respectively.