Removal of copper ions using baru bark and pulp as an adsorbent

With the need to develop increasingly viable and efficient methods, adsorption studies using natural materials have been highlighted. These materials can even be obtained from by-products of agro-industrial processes, making the process more economically viable. This study evaluated the potential of the bark and pulp of the Baru species Dipteryx alata as a natural adsorbent for removing copper ions Cu (II) from aqueous systems and also characterized the material in terms of its composition using the analytical techniques of Infrared Spectroscopy (FTIR) and Thermogravimetric Analysis (TGA). The adsorption parameter optimization tests to determine the best removal conditions were carried out using a univariate method, the variables studied were: pH, agitation time and adsorbent mass. Removal was carried out with standard solutions of Cu (II) at a concentration of 10 mg L-1. After stirring, the supernatant was filtered and analyzed by Flame Atomic Absorption Spectroscopy (FAAS).