Adsorption of Copper and Calcium Cations on Polarized Activated Carbon Modified by Quercetin

Abstract

The effect of immobilized quercetin on activated carbon on and adsorption, as a function of a potential, was investigated. Ranges of potentials, corresponding to areas of selective adsorption of investigated cations, were obtained. ions do not adsorb on unmodified activated carbon AG-3V. In contrast, the modification of the activated carbon increases the adsorption activity of . There are two areas of selective adsorption of ions. The selective adsorption of ions on unmodified sorbent was not found. The selective adsorption of ions on the quercetin-modified activated carbon initiates at potentials near . Dissolved oxygen and the acidification of a solution, containing calcium or copper ions, decrease the adsorption activity on modified and unmodified activated carbons.