Co-Extraction of U(VI) and HNO3 Using TBP and its Higher Homologues TiAP and TEHP: Comparison of Equilibria, Kinetics, and Rate of Extraction

被引：11

作者：

Das, Diptendu ^{[1
]}

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

Roy, S. B. ^{[2
]}

Bhattacharya, R. ^{[3
]}

机构：

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

[2] Bhabha Atom Res Ctr, Uranium Extract Div, Bombay 400085, Maharashtra, India

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

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 2015年 / 50卷 / 03期

关键词：

TiAP; nitric acid; TEHP; U(VI); bulk liquid membranes; TBP; co-extraction; liquid emulsion membranes; NITRIC-ACID SOLUTIONS; 3RD PHASE-FORMATION; ISO-AMYL PHOSPHATE; N-BUTYL PHOSPHATE; TRIBUTYL-PHOSPHATE; URANYL-NITRATE; URANIUM(VI); DODECANE; SYSTEMS; OCTANE;

D O I：

10.1080/01496395.2014.973508

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this work, bulk-liquid membrane (BLM) system is used to compare tri-n-butyl phosphate (TBP), tri-isoamyl phosphate (TiAP), and tris(2-ethylhexyl) phosphate (TEHP) for their relative ability to co-extract U(VI) and nitric acid from aqueous nitric acid feed-phase into water strip-phase, through hydrocarbon membrane-phase. The kinetics of extraction is modelled and the model is validated through experiments. The quantity which determines the efficiency of liquid emulsion membrane (LEM) process is the relative rate of extraction of U(VI) to nitric acid. This is in the order TiAP>TEHP>TBP, indicating that TiAP is most suitable for extraction of U(VI) from nitric acid using LEM.

引用

页码：411 / 420

页数：10

共 3 条

[1] INVESTIGATION OF EXTRACTION OF ACTINYL IONS WITH INORGANIC LIGANDS .1. EXTRACTION OF U(VI), NP(VI) AND PU(VI) BY THE TBP - HNO3 SYSTEM
FUKS, L
LIS, S
FIDELIS, I
JOURNAL OF RADIOANALYTICAL CHEMISTRY, 1979, 52 (01): : 79 - 84
[2] Supercritical CO2 extraction of uranium(VI) from HNO3 solution using N,N,N′,N′-tetrabutyl-3-oxapentanediamide
Koh, Moonsung
Yoo, Jaeryong
Park, Yong
Bae, Daeil
Park, Kwangheon
Kim, Hakwon
Kim, Hongdoo
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2006, 45 (15) : 5308 - 5313
[3] Stoichiometric relation for extraction of uranium from UO2 powder using TBP complex with HNO3 and H2O in supercritical CO2
Sawada, K
Uruga, K
Koyama, T
Shimada, T
Mori, Y
Enokida, Y
Yamamoto, I
JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, 2005, 42 (03) : 301 - 304

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