Implementación de cascarilla de café en la bioadsorción de metales pesados y su actividad antimicrobiana

Abstract

The investigation is about, the use of modified coffee husk in the extraction of metal ions of Pb(II), Cd(II), Cu(II) and Cr(III) in aqueous solution. The modification of husk and coffee lignin was carried out by the impregnation method, using silver nitrate (AgNO3), and sodium borohydride (NaBH4) as precursors. In order to evaluate the extraction of metal ions, extraction kinetics and isotherms were performed, as well as the characterization of materials using techniques such as FT-IR, SEM and DLS. In addition, silver has antimicrobial properties, therefore, tests for bactericidal and antifungal activity were carried out on different species that usually affect society.