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Kinetic analysis of ultrasound leaching of nickel laterite ore

P. Paunović, G. Načevski

2019ennickelleachingultrasoundkineticslateriteore

Abstract

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This study investigates the ultrasound leaching process of nickel-bearing laterite ore from Ržanovo, R. Macedonia. The objective was to analyze the kinetics of the leaching process, focusing on the influence of sulfuric acid concentration (1, 2, and 3 M H2SO4) and various temperatures (298, 313, 323, and 348 K) on nickel extraction. The ore was characterized using X-ray fluorescence (XRF), X-ray diffraction (XRD), thermal analysis (TGA, DTA, DTG), and optical microscopy. Results indicated that the Ginstling-Braunshtein model best described the kinetic process for 3 M H2SO4, revealing that diffusion is the limiting step. The activation energy was determined to be 33.1 kJ·mol–1, confirming diffusion control. This research provides insights into the optimization of ultrasound leaching techniques for more efficient nickel extraction from laterite ores.

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Cite This Work

@article{ef8314c5-3e42-49a9-b816-b796f25ece0f,
  title={Kinetic analysis of ultrasound leaching of nickel laterite ore},
  author={P. Paunović and G. Načevski},
  year={2019},
  language={en}
}
TY  - JOUR
TI  - Kinetic analysis of ultrasound leaching of nickel laterite ore
AU  - P. Paunović
AU  - G. Načevski
PY  - 2019
LA  - en
ER  -

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