Generación de carbón activado a partir del residuo de cosecha de Ananas comosus para la remoción de metales pesados Plomo (Pb+2) y Cadmio (Cd+2)

Abstract

In this study, activated charcoal was prepared from the leaves of Ananas comosus; by chemical activation, from two different pyrolysis temperatures (500 ° C and 600 ° C) and different concentrations of activating agent (20%, 40%,42,5% and 60%) in a 6: 1 impregnation ratio, with which yield percentages were obtained which varied from 47.15% to 54.82%. The surface chemistry of the coals was studied by FTIR infrared spectroscopy. The adsorbent properties of heavy metals (Pb2 + and Cd2 +) were measured from aqueous solutions, obtaining a removal percentage above 80% for both solutions. The adsorption isotherm was performed, in which the linearized experimental data fit very well to the Langmuir adsorption isotherm model, where the chemotherapy of lead and cadmium heavy metals is produced from the aqueous solutions.