Journal
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
Volume 82, Issue 1, Pages 55-58Publisher
SPRINGER
DOI: 10.1007/s00128-008-9576-5
Keywords
Bauxite residue; Fe (III); Leaching; Temperature
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Bauxite residue, as solid waste from alumina production, contains mainly hematite [Fe2O3]. Kinetic study of iron leaching of bauxite residue by diluted sulfuric acid at atmospheric pressure has been investigated. The results have been obtained as following: (i) Temperature play an important role in iron leaching from bauxite residue. Higher temperature is favor of Fe (III) leaching from bauxite residue. (ii) The leaching process is applicable to the intra-particle diffusion model and the apparent activation energy of model of leaching is found to be 17.32 kJ/mol.
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