The uranium(VI) extraction mechanism of D2EHPA-TOPO from a wet process phosphoric acid

被引：44

作者：

Girgin, S ^{[1
]}

Acarkan, N ^{[1
]}

Sirkeci, AA ^{[1
]}

机构：

[1] Istanbul Tech Univ, Min Fac, Coal & Mineral Proc Dept, TR-80626 Istanbul, Turkey

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2002年 / 251卷 / 02期

关键词：

D O I：

10.1023/A:1014816310718

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

This paper reports the results of an investigation into the solvent extraction of uranium from technical grade phosphoric acid using industrially available extractants as D2EHPA and TOPO diluted in technical grade kerosene. Preliminary tests showed that, the effect of different parameters such as uranium oxidation stage, temperature and the molar ratio of D2EHPA/TOPO on the uranium recovery was in good agreement with those of previous investigations. However, a detailed investigation into the effect of phosphoric acid concentration, organic concentration and acid/organic phase ratios suggested that the mechanism of D2EHPA/TOPO synergism was rather complex and it presented a different character depending on the acid concentration.

引用

页码：263 / 271

页数：9

共 33 条

[21]

MCREADY WL, 1981, NUCL TECHNOL, V53, P344

[22] USE OF A DISK RING PULSED COLUMN FOR URANIUM EXTRACTION FROM PHOSPHORIC-ACID [J].

MOUYSSET, G ;

MOLINIER, J ;

LENZI, M .

HYDROMETALLURGY, 1983, 11 (02) :165-179

[23] COMPUTING OF LIQUID LIQUID EQUILIBRIA .1. APPLICATION OF A GENERAL CHEMICAL-MODEL TO THE EXTRACTION OF URANIUM FROM PHOSPHORIC-ACID BY A HYDROXYALKYLDIPHOSPHONIC ACID [J].

NOIROT, PA ;

WOZNIAK, M .

HYDROMETALLURGY, 1985, 13 (03) :229-248

[24]

*OECD, 1999, ENV ACT UR MIN MILL, P29

[25]

RAFAJFEH KM, 2000, HYDROMETALLURGY, V56, P309

[26]

RING RJ, 1977, ATOM ENERGY, P12

[27]

RITCEY GM, 1984, SOLVENT EXTRACTION 1, P28

[28] Natural radioactivity in phosphate fertilizers [J].

Scholten, LC ;

Timmermans, CWM .

FERTILIZER RESEARCH, 1996, 43 (1-3) :103-107

[29] Studies on uranium extraction from phosphoric acid using di-nonyl phenyl phosphoric acid-based synergistic mixtures [J].

Singh, H ;

Vijayalakshmi, R ;

Mishra, SL ;

Gupta, CK .

HYDROMETALLURGY, 2001, 59 (01) :69-76

[30]

STEVENS DN, 1980, UR RES TECHN SEM 3 M

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