Compositos de cascarón de huevo / nanoparticulas de óxido de hierro - plata metálica, y su funcionalidad en la eliminación de iones pb, as y hg, en medio acuoso

Abstract

Abstract The synthesis of nanoparticles of metallic silver and hematite supported on calcite by microwaves, forms a mesoporous material with an average diameter of 17.97 nm and a surface area of 1.4 m2 / g, the silver nanoparticles are hemispherical with a size between 10 and 20 nm in diameter and hematite nanoparticles less than 5nm. This material has a synergistic effect when placing 10mg of the composition in aqueous solution containing 10mg / L of lead, arsenic and mercury; these are eliminated 100%. The process of adsorption of the metals in the composition is adjusted to the kinetic model of pseudosecond order, with two active sites of adsorption.