Zinc Extraction from Industrial Waste by Acid Leaching Process
In this study, the leaching of zinc metal from industrial waste was investigated using acid leaching
process. According to the XRD results, the chemical composition of industrial waste consisted of gypsum, silver
sulfite and Ajento-jarosite (AgFe2(SO4)2(OH)6). Moreover the results from SEM/EDS and LEP also showed that
there were many kinds of value metals in the Jarosite such as Indium, Copper, Silver and Zinc. Based upon the
study, the leaching of Jarosite by sulfuric acid as leaching solution, Zinc from the Jarosite was able to be leached
out more than 80% of overall Zinc metal in Jarosite.