SEPARATION OF HEAVY METALS FROM WATER RESOURCES BY DIFFERENT NATURAL ADSORBENTS

Within this paper, investigations were carried out in order to obtain data for determining the maximum absorption capacity and the conditions in which the balance in the systems occurs: Mn2+ ions - expanded perlite and Mn2 + ions - carbonized sunflower husks. A series of tests were performed using model solutions of Mn2+ ions with different concentrations.Experimental data obtained by the equilibrium absorption of the systems: Mn2+ ions - expanded perlite and Mn2+ ions - carbonized sunflower husks are fitted with four commonly used isotherms: Langmuir, Freundlich, Langmuir – Freundlich and Redlich – Peterson, with the application of MATLAB/Curve Fitting Toolbox. The obtained results from analyzes are shown graphically and tabular, after which a comparison of the adsorption characteristics of the two adsorbents is performed.