,-di(2-ethylhexyl)octanamide from nitric acid mediumTsutsui, Nao 
; Ban, Yasutoshi 
; Sagawa, Hiroshi; Ishii, Sho; Matsumura, Tatsuro
Solvent extraction of uranium from a nitric acid medium was performed with ,-di(2-ethylhexyl)octanamide (DEHOA) by a single-stage batch method, and the distribution ratio equation of U(VI) was derived as 
= 1.1![$$[rm NO^{-}_{3}]^{1.6}_{rm aq}[{rm DEHOA}]^{2}_{rm org}$$](/search/images/ERNVY2TNEBHE4XT1FV4V44ZTPVOV24ZRFY1H0X11LRZG0IDBOF4VW402OJWSARCFJBHUC5K3LZ3TE5K5PNOHE1JAN3ZGO5JE.gif)
. Furthermore, the nitric acid distribution was also evaluated, and the distribution ratio equation 
= 0.12![$$[rm H^{+}]^{0.76}_{rm aq}[{rm DEHOA_{rm Free}}]_{rm H}$$](/search/images/ERNVY2TNEBEF24ZLPVOV24ZQFY1TM5K5PNOHE1JAMFYX0W11LRZG0ICEIVEE4QK5PNOHE1JAIZZGKZL3PVOV4402OJWSASD3EQ.gif)
was obtained. Batch experiments to evaluate the time dependence of U(VI) extraction and the U(VI) loading capacity of DEHOA were also performed. It was revealed that U(VI) extraction by DEHOA reached an equilibrium state within a few minutes, and the loading capacity was 0.71 mol/dm
(M) when the concentrations of DEHOA and nitric acid were 1.5 and 3.0 M, respectively.
Language |
: | English |
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Journal |
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Volume |
: | 35 |
Number |
: | 6 |
Pages |
: | p.439 - 449 |
Publication Year/Month |
: | 2017/08 |
Paper URL |
: |
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Keywords |
: | N,N-ジアルキルアミド; モノアミド; ウラン; 溶媒抽出; 再処理 |
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Percentile:16.24 Category:Chemistry, Multidisciplinary |
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