Problem associated with the use of TBP for LEM extraction of U(VI) and attempt to overcome this problem using other ligands

被引：7

作者：

Das, Diptendu ^{[1
]}

Juvekar, V. A. ^{[1
]}

Bhattacharya, R. ^{[2
]}

机构：

[1] Indian Inst Technol, Dept Chem Engn, Bombay 400076, Maharashtra, India

[2] Atom Energy Regulatory Board, Bombay, Maharashtra, India

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2015年 / 304卷 / 03期

关键词：

U(VI); TBP; TiAP; TEHP; TOPO; D2EHPA; TOA; Critical time; LEM; LIQUID EMULSION MEMBRANE; URANIUM EXTRACTION; TRIOCTYLPHOSPHINE OXIDE; PHOSPHORIC-ACID; RECOVERY; THORIUM; SYSTEM;

D O I：

10.1007/s10967-014-3918-z

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Suitability of TBP for recovery of uranium(VI) from dilute HNO3 using LEM extraction is investigated. TBP co-extracts significant amount of HNO3 along with U(VI). Beyond a critical time, extraction of U(VI) ceases due to attainment of critical acid level when the strip phase is unable to break TBP-U(VI) complex. The observed critical time is in good agreement with that estimated from rate of acid extraction. Optimal conditions at which the relative extraction of HNO3 is minimal with respect to U(VI) is arrived at. The extraction efficiency of TBP is compared with other ligands viz., TiAP, TEHP, TOPO, TOA and D2EHPA.

引用

页码：1027 / 1042

页数：16

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