Application of adsorption technology for the extraction of chlorine-containing pollutants

Abstract The paper conducts a comparative analysis of the adsorption capacity of a number of sorbents of different nature, production method and structure, used to extract chlorine-containing water pollutants. The main regularities, features and mechanism of trichlorethylene adsorption by sorbents were established to compare the adsorption characteristics. It was found that for trichlorethylene (TCE) weak sorbent, i.e., sorbate interaction can be a consequence of electrostatic repulsion of an organic substance molecule from polar groups on the carbon surface and adsorbed water molecules at the initial moment of adsorption. The main parameters of adsorption are calculated using the Dubinin - Radushkevich equation. The paper states that the adsorption capacity of adsorbents with respect to TCE decreases in the series PPS> AG-3 ≥ Purolat. It gives the substantiation of the choice of the sorbent for the extraction of trichlorethylene from aqueous solutions.