Abstract
The study is aimed at investigating the efficiency of the sodium salt of maleic acid-decene-1-styrene terpolymer as a sorbent for the removal of copper ions from aqueous solution. The removal of copper ions on synthesized polymer-sorbent was carried out using a batch experiment method. Sorption of copper ions was studied at different values of the contact time, sorbent dosage, pH and initial concentrations of copper ions. The obtained results have been analyzed in Langmuir, Freundlich, and Dubinin—Radushkevich adsorption models. The equilibrium experimentally measured sorption capacity of the sorbent is 0.512 g·g−1. The calculated value of the maximum experimental sorption capacity from the Langmuir and Freundlich equations is equal to 0.754 and 0.725 g·g−1, respectively. The value of (1/n) in Freundlich equation is between 0 and 1, which indicates that the sorption process is governed by chemisorption. The value of the mean sorption energy calculated from Dubinin—Radushkevich equation also confirms that the sorption of copper ions by synthesized polymer salt has chemical character.
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