Transport of uranium from nitric acid solution by non-dispersive solvent extraction using a hollow fibre contactor

被引：12

作者：

Patil, C. B.

Mohapatra, P. K.

Singh, R. R.

Gurba, P. B.

Janardan, P.

Changrani, R. D.

Manchanda, V. K. ^{[1
]}

机构：

[1] Bhabha Atom Res Ctr, Div Radiochem, Bombay 400085, Maharashtra, India

[2] Bhabha Atom Res Ctr, Nucl Recycles Grp, Power Reactor Fuel Reproc Lab, Tarapur 401502, Maharashtra, India

来源：

RADIOCHIMICA ACTA | 2006年 / 94卷 / 6-7期

关键词：

hollow fibre; non-dispersive solvent extraction; uranium(VI); di-n-hexyl octanamide;

D O I：

10.1524/ract.2006.94.6.331

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Membrane based non-dispersive solvent extraction (NDSX) of U(VI) from aqueous nitric acid medium was carried out using a commercial hollow fibre module containing microporous hydrophobic polypropylene capillaries. The NDSX operation was carried out by pumping U(VI) solutions at varying concentrations of nitric acid (1-5 M) through the tube side and organic solvent (di-n-hexyl octanamide (DHOA) in normal paraffin hydrocarbon (NPH)) through the shell side of the hollow fibre capillaries. Extraction studies were performed under different hydrodynamic conditions and the overall mass transfer was evaluated under counter-current flow conditions. Counter-current mode was found to be better as compared to the co-current mode. The U(VI) mass transfer rates were positively influenced by the nitric acid as well as DHOA concentrations.

引用

页码：331 / 334

页数：4

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