水溶液中に存在する化学元素を分離する循環的方法

Japanese Patent JP4349880

B2

Cyclic process for the separation of chemical elements E1 and E2 in an aqueous solution by co-extraction in an organic phase, addition of a second extractant, then selective de-extraction of E1 and E2 and separation of the two extractants for re-use. Each cycle of the process comprises the following stages (a) co-extraction of the aqueous solution containing elements E1 and E2 by a liquid phases contact with an organic liquid phases containing a primary extractant enabling migration of the elements into the organic phase; (b) addition to the organic phase of a second extractant which can selectively retain the E2 element(s) in the organic phase during the next stage; (c) selective de-extraction of element(s) E1 from the organic phase with an aqueous solution able to withdraw the element(s) from the organic phase; (d) selective de-extraction of element(s) E2 from the organic phase with an aqueous solution enabling withdrawal of the element(s) E2 from the organic phase; and (e) separation of the first and second extractants from each other for re-use in the following cycle.

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WO/2016/117175	ZIRCONIUM EXTRACTANT AND METHOD FOR EXTRACTING ZIRCONIUM

Pascal Baron
Michael Lecomte
Xavier Ele
Bernard Mobogne

JP2003354264A

October 21, 2009

October 14, 2003

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COMPAGNIE GENERALE DES MATIERES NUCLEAIRES

C22B3/26; G21C19/46; B01D11/04; C01F17/17; C22B60/02; C22B59/00

JP20021007A
JP6236347A
JP59111924A

Masatake Shiga
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama
Shinya Mitsuhiro

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