EKSTRAKSI LOGAM ZINK (Zn) DARI LIMBAH LUMPUR ELEKTROPLATING DENGAN PEMANASAN BIASA DAN MICROWAVE

Abstract

This research aims to determine the ability of microwave in extract Zn metal in electroplating sludge with solvent, and method variation by microwave irradiation and conventional heating. The solvents used were acetid acid, hydroxylamine hydrochloride, and ammonium acetate. The Zn content was analyzed using SSA. The concentration of Zn metal has been extracted by microwave using each solvent were 13.800 – 15.258 ppm; 11.222 – 12.165 ppm and 17.081 – 18.337 ppm. While on conventional heating method using three solvents each 5.522 ppm – 6.957 ppm; 6.324 ppm – 6.500 ppm and 7.858 ppm – 8.566 ppm. It can be concluded that ammonium acetate is the best solvent to extract Zn in electroplating sludge. Based on the efficiency, microwave is anefficient methodin extraction rather than conventional heating. Microwave method has been the ability to attract Zn metal more in sample compared with ordinary heating for all type of solvent.