Dissolution kinetics of nickel laterite ore using different secondary metabolic acids

Brazilian Journal of Chemical Engineering

S. Sahu¹  N. C. Kavuri¹  M. Kundu¹ 

[1] ,National Institute of Technology Chemical Engineering Department Rourkela Orissa ,India

关键词: Dissolution kinetics;    Laterite ore;    Leaching;    Pseudomonas putida;   

DOI  :  10.1590/S0104-66322011000200009

来源: SciELO

【 摘 要 】

The dissolution kinetics of nickel laterite ore in aqueous acid solutions of three metabolic acids, i.e., citric acid, oxalic acid and acetic acid were investigated in a batch reactor individually. It was determined that experimental data comply with a shrinking core model. The diffusion coefficients for citric acid, oxalic acid and acetic acid were found to be 1.99×10-9 cm²/s, 2.59×10-8 cm²/s and 1.92×10-10 cm²/s respectively. The leaching ability of each acid was observed and it was found that oxalic acid was better than the other two.

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