Article pubs.acs.org/est
Sorption of Organic Cations to Phyllosilicate Clay Minerals: CECNormalization, Salt Dependency, and the Role of Electrostatic and Hydrophobic Effects Steven T. J. Droge*,†,‡ and Kai-Uwe Goss†,§ †
Department of Analytical Environmental Chemistry, Helmholtz Centre for Environmental Research−UFZ, Permoserstrasse 15, 04318 Leipzig, Germany ‡ Institute for Risk Assessment Sciences, Utrecht University, Yalelaan 104, 3508 TD Utrecht, The Netherlands § Institute of Chemistry, University of Halle-Wittenberg, Kurt Mothes Str. 2, 06120 Halle, Germany S Supporting Information *
ABSTRACT: Sorption to the phyllosilicate clay minerals Illite, kaolinite, and bentonite has been studied for a wide variety of organic cations using a flowthrough method with fully aqueous medium as the eluent. Linear isotherms were observed at concentrations below 10% of the cation-exchange capacity (CEC) for Illite and kaolinite and below 1 mmol/kg (
