Effect of Polyvinylidene Fluoride Hollow Fiber Membranes on Mass Transfer of Samarium
来源期刊：JOURNAL OF RARE EARTHS2000年第3期
论文作者：LI De-qian ZHANG Feng-jun LUO Fang WU Yong-lie
Key words：rare earths; samarium; extraction; polyvinylidene fluoride hollow fiber membrane; mass transfer kinetics;
Abstract: The influence of swelling and stripping acidity on the mass transfer coefficient based on water phase and the inner diameters of membranes were studied with P507-HCl-Sm as working system in the two different kinds of hollow fiber membranes. Effects of extractant concentration, H+ concentration in aqueous phase and Sm3+ concentration on extraction rate were discussed and the corresponding reaction series were obtained. According to the investigations on the interfacial kinetics, the reaction kinetics equation and reaction rate constant were obtained.
LI De-qian1，ZHANG Feng-jun1，LUO Fang1，WU Yong-lie1
(1.Laboratory of Rare Earth Chemistry and Physics, Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022,China)
Abstract:The influence of swelling and stripping acidity on the mass transfer coefficient based on water phase and the inner diameters of membranes were studied with P507-HCl-Sm as working system in the two different kinds of hollow fiber membranes. Effects of extractant concentration, H+ concentration in aqueous phase and Sm3+ concentration on extraction rate were discussed and the corresponding reaction series were obtained. According to the investigations on the interfacial kinetics, the reaction kinetics equation and reaction rate constant were obtained.
Key words:rare earths; samarium; extraction; polyvinylidene fluoride hollow fiber membrane; mass transfer kinetics;
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