Recovery of Lead and Zinc from Complex Industrial Waste of Zinc Process with Ammonium Acetate

Zinc filter cakes (ZFCs) have economic values as secondary sources, but also are classified hazardous waste and negative effects on human health the environment because they contain several heavy metals. Especially extraction recovery of lead zinc metals from ZFCs will provide environmental benefits. Therefore, in this study, with a weak acid (ammonium acetate, AmAc) leaching was investigated, then cementation dissolved Pb pregnant leach solution using metal powder studied. The parameters such AmAc concentration, temperature, time, solid/liquid ratio were revealed single factor. Lead examined different time temperature ranges. As result experimental studies, 81% 34% extracted ZFC under selected condition; 3 M 70°C 1 h 1/10 g/mL ratio. Cementation processes 45°C 120 min showed that 70% ions recovered solution. Also, activation energy for calculated 33.4 kj/mole.