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Membrane Series. 18. Selective Separation of Rare-Metal Elements by Means of Electrodialysis accompanied by Metal Substitution Reaction.
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- TAKAHASHI Hiroshi
- Department of Materials-process Engineering and Applied Chemistry for Environments, Faculty of Engineering and Resource Science, Akita University
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- KIKUCHI Ken-ichi
- Department of Materials-process Engineering and Applied Chemistry for Environments, Faculty of Engineering and Resource Science, Akita University
Bibliographic Information
- Other Title
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- 膜シリーズ １８ 金属置換反応を伴う電気透析によるレアメタルの相互分離
- Published
- 1999
- DOI
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- 10.5182/jaie.10.15
- Publisher
- Japan Society of Ion Exchange
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Description
A new technique for rare-metal-elements selective-separation using electrodialysis accompanied by metal substitution reaction has been developed. The dialyzer used as a reactor consists of five compartments named Anode, Feed, Reaction, Strip, and Cathode, which are divided with ion-exchange membranes. The Feed solution, the Reaction solution, and the Strip solution contain CuCl2, rare-metal EDTA complex, and HCI, respectively. When a voltage is applied to the dialyzer, Cu2+ transfers from the Feed compartment to the Reaction compartment, and is substituted for the rare-metals complexed with EDTA. The resultant free ions of rare-metal elements move to the Strip compartment at different transfer rates: The rare-metal elements are recovered there, being selectively separated. This separation technique is characterized by preferential transport in the membrane and different rates of metal substitution reaction in the Reactor compartment. In this paper, some experimental results for the separation and the reaction kinetics are presented, and explained by a model proposed.
Journal
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- Journal of Ion Exchange
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Journal of Ion Exchange 10 (1), 15-25, 1999
Japan Society of Ion Exchange
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Details 詳細情報について
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- CRID
- 1390282679412272128
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- NII Article ID
- 130004162211
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- ISSN
- 18843360
- 0915860X
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- OpenAIRE
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- Abstract License Flag
- Disallowed