Modeling of simultaneous extraction of uranyl nitrate and nitric acid by 36 vol.% tri-iso-amyl phosphate in n-dodecane

被引：2

作者：

Balasubramonian, S. ^{[1
]}

Sinha, Pranay Kumar ^{[1
]}

Sivakumar, D. ^{[1
]}

Mishra, Alok Kumar ^{[1
]}

Sampath, M. ^{[1
]}

Pandey, N. K. ^{[1
]}

Kumar, Shekhar ^{[2
]}

机构：

[1] IGCAR, Reproc R&D Div, Reproc Grp, Kalpakkam, Tamil Nadu, India

[2] IGCAR, Reproc Operat Div, Reproc Grp, Kalpakkam, Tamil Nadu, India

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2017年 / 314卷 / 02期

关键词：

Solvent extraction; Uranium; Modeling; Purex process; Thermodynamic model; Distribution equilibria; NORMAL-BUTYL PHOSPHATE; TRIBUTYL-PHOSPHATE; AQUEOUS-SOLUTIONS; GIBBS ENERGY; EQUILIBRIA; SYSTEM; WATER; URANIUM; U(VI); BUTYLPHOSPHATE;

D O I：

10.1007/s10967-017-5474-9

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The simultaneous extraction of uranyl nitrate and nitric acid by 36 vol.% tri-iso-amyl phosphate (TiAP) in n-dodecane was experimentally studied and modeled. The batch extraction experiments were carried out at low concentration region of aqueous uranyl nitrate by 36 vol.% TiAP in n-dodecane at 25 A degrees C. The non idealities in aqueous phase were described by eNRTL model. The predicted organic phase concentration of nitric acid and uranyl nitrate obtained by considering the HNO3 center dot TiAP and UO2(NO3)(2)center dot 2TiAP species in the organic phase is in good agreement with the experimental data.

引用

页码：975 / 983

页数：9

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