Ion exchange properties of the sulfur-modified biotite Academic Article

abstract

• The ion exchange behavior of a sulfur-modified biotite towards Pb2+, Hg2+, Co2+, Cu2+, Cd2+ and Zn2+ ions has been studied. The ion exchange isotherms of divalent cations were determined and concentration equilibrium constants as a function of metal loading were analyzed. Sulfur modified biotite exhibits high affinity for Hg2+, Pb2+, Cu2+ and Cd2+ ions in individual solutions and in the presence of electrolytes. About 200 mg Hg/g uptake in 1.10-3 M Hg2+ solution and ~35 mg Hg/g in groundwater simulant or an alkaline simulant 2 M in NaNO3 + 1 M in NaOH was found. The possibility of a complex ion exchange and precipitation mechanism of the sulfur modified biotite towards the soft cations is proposed.

authors

• Clearfield, Abraham

published proceedings

• SOLVENT EXTRACTION AND ION EXCHANGE

author list (cited authors)

• Bortun, A. I., Bortun, L. N., Khainakov, S. A., & Clearfield, A.

citation count

• 3

complete list of authors

• Bortun, AI||Bortun, LN||Khainakov, SA||Clearfield, A

publication date

• November 1998

publisher

• Taylor & Francis  Publisher

published in

• Solvent Extraction and Ion Exchange  Journal

Digital Object Identifier (DOI)

• 10.1080/07366299808934594

start page

• 1541

end page

• 1558

volume

• 16

issue

• 6

URL

• http%3A%2F%2Fdx.doi.org%2F10.1080%2F07366299808934594