DISSOLUTION KINETICS OF NICKEL LATERITE ORE USING DIFFERENT SECONDARY METABOLIC ACIDS

被引：19
作者：
Sahu, S. [1 ]
Kavuri, N. C. [1 ]
Kundu, M. [1 ]
机构：
[1] Natl Inst Technol, Dept Chem Engn, Rourkela, Orissa, India
来源：
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING | 2011年 / 28卷 / 02期
关键词：
Dissolution kinetics: Laterite ore; Leaching; Pseudomonas putida; SULFURIC-ACID; LEACHING KINETICS; NATURAL MAGNESITE; SILICATE; MINERALS; BACTERIA; CATALYST; PYRITE; FUNGI; ROCKS;
D O I：
10.1590/S0104-66322011000200009
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
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 1.99x10(-9) cm(2)/s, 2.59x 10(-8) cm(2)/s and 1.92x10(-10) cm(2)/s respectively. The leaching ability of each acid was observed and it was found that oxalic acid was better than the other two.
引用
收藏
页码：251 / 258
页数：8
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