KINETICS OF THE COUPLED TRANSPORT OF URANIUM(VI) ACROSS SUPPORTED LIQUID MEMBRANES CONTAINING BIS(2-ETHYLHEXYL)PHOSPHORIC ACID AS A MOBILE CARRIER

被引：13

作者：

HUANG, CT ^{[1
]}

HUANG, TC ^{[1
]}

机构：

[1] NATL CHENG KUNG UNIV, DEPT CHEM ENGN, TAINAN 70101, TAIWAN

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1988年 / 27卷 / 09期

关键词：

Chemical Reactions--Reaction Kinetics - Diffusion - Membranes--Liquid;

D O I：

10.1021/ie00081a020

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Kinetics of the coupled transport of uranium (VI) from nitric acid solutions containing 1.52×10-4 to 1.8×10-3 of uranium (VI) through a supported liquid membrane (SLM) containing 0.0025-0.025 mol/dm3 of dimeric bis(2-ethylhexyl)phosphoric acid in kerosene as a mobile carrier was investigated. Rate equations describing the transport of uranium(VI) were derived taking into account the resistance of aqueous film diffusion, chemical reaction, and membrane phase diffusion. The relative resistance of each transfer step was evaluated. The transport rate of uranium(VI) was found to be controlled by chemical reaction and aqueous film diffusion, both of which occur at the source-side interface, and is in agreement with that estimated by the derived rate equation including a membrane factor.

引用

页码：1681 / 1685

页数：5

共 16 条

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