<abstract xmlns="http://www.w3.org/1999/xhtml"><p>This paper discusses the extraction of cadmium from phosphate ore by the washing method. Various parameters were investigated for the cadmium extraction from phosphate ore. The results from extraction tests showed that cadmium extraction depends on the nature and concentration of the extracting agent, the liquid/phosphate ore ratio, the temperature and the solution pH. The effi ciency of the nine extracting agents for removing cadmium from phosphate ore was found to be in the order: Na2EDTA > citric acid > tartric acid > ammonium citrate > calcium chloride > ammonium acetate > ammonium chloride > oxalic acid > ammonium hydroxide. In this study cadmium extraction kinetics was best described by the product layer diffusion control model.</p></abstract>

This paper discusses the extraction of cadmium from phosphate ore by the washing method. Various parameters were investigated for the cadmium extraction from phosphate ore. The results from extraction tests showed that cadmium extraction depends on the nature and concentration of the extracting agent, the liquid/phosphate ore ratio, the temperature and the solution pH. The effi ciency of the nine extracting agents for removing cadmium from phosphate ore was found to be in the order: Na2EDTA > citric acid > tartric acid > ammonium citrate > calcium chloride > ammonium acetate > ammonium chloride > oxalic acid > ammonium hydroxide. In this study cadmium extraction kinetics was best described by the product layer diffusion control model.

Phosphate ore washing by Na<sub>2</sub>EDTA for cadmium removal: Optimization  of the operating conditions

University Badji Mokhtar Annaba, Laboratory of water treatment and valorization of industrial wastes, Chemistry Departmemt, Faculty of Sciences, BP 12 Annaba 23000 (Algéria)

Polish Journal of Chemical Technology

Phosphate ore washing by NaEDTA for cadmium removal: Optimization  of the operating conditions

This paper discusses the extraction of cadmium from phosphate ore by the washing method. Various parameters were investigated for the cadmium extraction from...

Phosphate ore washing by Na₂EDTA for cadmium removal: Optimization of the operating conditions

Published Online: Oct 31, 2012

Page range: 15 - 20

DOI: https://doi.org/10.2478/v10026-012-0079-0

Keywords
Phosphate ore washing, Cadmium, Environment, Extraction, Chemical processes, Optimization.

This content is open access.

Phosphate ore washing by Na2EDTA for cadmium removal: Optimization of the operating conditions