USE OF AGROINDUSTRIAL WASTE AS BIOSORBENT IN THE REMOVAL OF HEAVY METALS FROM SWINE WASTEWATER

Abstract

This work aimed to evaluate the use of passion fruit peels, eggshells and straw and corncobs in the biosorption of copper (Cu) and zinc (Zn) ions from swine wastewater. Kinetic tests were performed with each agroindustrial waste, in batch system, for the determination of the percentage removal of metals. There was adsorption of the Cu only using the passion fruit peels, that showed maximum removal of 100% for Cu and 98,6% for Zn. The eggshells and straw and corncobs obtained maximum removal for the Zn of 65,6% and 57,2%, respectively. The results showed the indicative of the possibility to use the tested residues as alternative biosorbents in the swine wastewater treatment.