Zinc leaching from smithsonite ore in lactic acid solution: Studies on parametric optimization, kinetic and mechanism
نویسندگان
چکیده
ABSTRACT. The solubility of low-grade zinc ores with a selective leaching environmentally friendly reagent has become focus great interest since and its compounds have found wide application. For this purpose, lactic acid was used to investigate the kinetics smithsonite ore obtained from Kayseri region. effects particle size (137.5-725 µm), concentration (0.5-5 M), solid/liquid ratio (0.5/250-3/250 g mL-1), stirring speed (500-800 rpm) temperature (40-70 °C) parameters on dissolution rate were experimentally studied. results show that about 99.8% is achieved using 425 µm at reaction 70 °C for 45 min time 2 M acid, 1/250 mL-1 600 rpm. statistical analysis experimental data revealed surface reaction-controlled an apparent activation energy 53.62 kJ.moL-1. kinetic model describing process as 
 KEY WORDS: Smithsonite, Dissolution kinetics, Lactic Zinc lactate
 Bull. Chem. Soc. Ethiop. 2023, 37(3), 735-744. DOI: https://dx.doi.org/10.4314/bcse.v37i3.15
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ژورنال
عنوان ژورنال: Bulletin of The Chemical Society of Ethiopia
سال: 2023
ISSN: ['1011-3924', '1726-801X']
DOI: https://doi.org/10.4314/bcse.v37i3.15