Synthesis of Nickel Oxalate from Extract Solution of Nickel Laterite Ore: Optimation and Kinetics Study
S. Surianti1, K. C. Wanta2, W. Astuti3, I. Perdana4, H. T. B. M. Petrus4
1Dayanu Iksanuddin University, Baubau, Indonesia
2Parahyangan Catholic University, Bandung, 40141 Indonesia
3Research Unit for Mineral Technology, Indonesian Institute of Sciences, 35361 Indonesia
4Universitas Gadjah Mada, 55281 Yogyakarta, Indonesia
Keywords: Nickel oxalate, precipitation, oxalic acid, optimization, kinetics
Abstract
In this study, the synthesis of nickel oxalate was investigated from an extract solution of nickel laterite using precipitation method. The experimention determined the best conditions of nickel oxalate synthesis. To optimize the process, Response Surface Method was applied on the experimental data. The kinetics study of the synthesis process shows that the approach using the Avrami model gives a better approach than the first order integral model. The activation energy generated from the kinetics study with this model is 36.5221 kJ/mol.
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