Novel compounds, Diglycolamides (DGA), for extraction of various metal ions from nitric acid to n-dodecane

Sasaki, Yuji ; Zhu, Z.-X.; Sugo, Yumi; Kimura, Takaumi

The extraction of metals by N,N,N',N'-tetraoctyl-diglycolamide (TODGA) from nitric acid to n-dodecane was investigated. From the measurement of distribution ratios, it was obvious that Ca (ionic radius: 100pm), trivalent and tetravalent ions with ionic radii of 87-113 and 83-94 pm are highly extractable by TODGA. In order to evaluate the extraction capacity in extraction solvent using DGA compounds, we measured the limits of metal concentration (LOC) for Ca(II), Nd(III) and Zr(IV). For the purpose to enhance the LOC value, we examined the modifier of solvent, N,N-dihexyl-octanamide(DHOA) and DGA with longer alkyl chain. It is evident that LOC is increased with DHOA concentration and the length of alkyl chain attached to N atom of DGA.

Language	:	English
Journal	:	Proceedings of International Conference on Nuclear Energy System for Future Generation and Global Sustainability (GLOBAL 2005) (CD-ROM)
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Number	:
Pages	:	5 Pages
Publication Year/Month	:	2005/10
Meeting title	:	International Conference on Nuclear Energy System for Future Generation and Global Sustainability (GLOBAL 2005)
Held date	:	2005/10
Location (city)	:	Tsukuba
Location (country)	:	Japan
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DOI for research data	:	Link to research data related to this paper/report.
Keywords	:	TODGA; Extraction Capacity; Ca; Nd; Zr; Amide; Diglycolamide
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Registration No. : B20051009
JAEA Abstracts No. : 46001124
Paper Submission No. : 20688

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