Novita Andarini 

Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Jember  

Ferlia Suci Ramadhani 

Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Jember

Tanti Haryati 

Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Jember

Suwardiyanto  

Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Jember

DOI: https://doi.org/10.19184/icl.v3i2.4107

ABSTRACT 

This research aims to determine the effect of adding an oxidizing solution in the gold extraction process using thiourea solution. The oxidizing agent used in thiourea leaching solution is FeCl3. Variations of additional volume of oxidizing solution are 0 mL, 10 mL, 20 mL, 30 mL, and 40 mL. Based on the results obtained, the addition of 30 mL oxidant FeCl3 can get optimal results. The thiourea leaching solution can extract gold as much as 46.7%.  

Keywords: extraction, gold, leaching, thiourea.