Abstract
Sorption behavior of rhenium with respect to new sorption materials was the object of this study in order to define the possibility of its extraction and concentration from dilute solutions. The sorption materials were prepared by modifying of high-area carbon cloth with a natural biopolymer-chitosan. The three types of sorption materials with different degree of amino groups protonation were obtained. Modified materials have higher sorption capacity as compared to initial carbon cloth. Sorption behavior of the materials was found to be conditioned by the number of the protonated amino groups. We propose that electrostatic interaction of perrhenate ion ReO4- with the protonated amino groups -NH3+ takes place.
