The leaching process of uranium- REE ore from El-Missikat in a sulfuric acid solution using hydrogen peroxide as an oxidant was investigated. The leaching condition temperature, hydrogen peroxide concentration, sulfuric acid concentration, contact time, particle size, solid-liquid ratio and agitation rate were studied. The optimum process operating parameters were: ore particle size 74 µm; sulfuric acid concentration 2.5 M; contact time 240 min; solid-liquid ratio 1:2; H2O2 concentration 0.5 M and agitation rate 600 rpm at temperature 25°C. The leaching efficiency of REE was about 70%, while the uranium leaching efficiency was about 95%. The experimental data were well interpreted with a shrinking core model with diffusion control through a porous product layer. The leaching process follows the kinetic model: 1-3 (1-X) 2/3 + 2 (1-X) = k1t with an apparent activation energy of 13.16 kJ/mole.
Moussa, M. A., Daher, A. M., Omar, S. A., Khawassek, Y. M., Haggag, E. A., & Gawad, E. (2014). Kinetics of leaching process of Uranium from EL-Missikat shear zone Eastern Desert, EGYPT. Journal of Basic and Environmental Sciences, 1(2), 65-75. doi: 10.21608/jbes.2014.369573
MLA
M. A. Moussa; A. M. Daher; S. A. Omar; Y. M. Khawassek; E. A. Haggag; E.A. Gawad. "Kinetics of leaching process of Uranium from EL-Missikat shear zone Eastern Desert, EGYPT", Journal of Basic and Environmental Sciences, 1, 2, 2014, 65-75. doi: 10.21608/jbes.2014.369573
HARVARD
Moussa, M. A., Daher, A. M., Omar, S. A., Khawassek, Y. M., Haggag, E. A., Gawad, E. (2014). 'Kinetics of leaching process of Uranium from EL-Missikat shear zone Eastern Desert, EGYPT', Journal of Basic and Environmental Sciences, 1(2), pp. 65-75. doi: 10.21608/jbes.2014.369573
VANCOUVER
Moussa, M. A., Daher, A. M., Omar, S. A., Khawassek, Y. M., Haggag, E. A., Gawad, E. Kinetics of leaching process of Uranium from EL-Missikat shear zone Eastern Desert, EGYPT. Journal of Basic and Environmental Sciences, 2014; 1(2): 65-75. doi: 10.21608/jbes.2014.369573
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