Extraction kinetics of lanthanum with purified Cyanex 923 from nitrate medium |
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| Authors: | Tong?Hui,Li?De-qian mailto:lriq@ciac.jl.cn" title=" lriq@ciac.jl.cn" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author,Wang?Yi-ge,Lei?Jia-heng |
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| Affiliation: | (1) School of Natural Sciences, Wuhan University of Technology, 430070 Wuhan, Hubei, China;(2) Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun, Jilin, China |
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| Abstract: | ![]()
Solvent extraction kinetics of lanthanum with purified Cyanex 923 in heptane from nitrate medium was investigated by using a constant interfacial cell with laminar flow at 303 K. The effects of stirring speed, temperature and specific interface on the extraction rate were studied. The experimental results showed that the extraction apparent activation energy was 32.0 kJ5mol -1 and the extraction process was controlled by both chemical reaction and diffusion. The extraction rates were measured at different chemical compositions by varying ionic strength, pH value and the concentration of purified Cyanex 923. The initial extraction rate equation was obtained. |
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| Keywords: | lanthanum Cyanex 923 solvent extraction kinetics |
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