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

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Title Co-Extraction of U(VI) and HNO3 Using TBP and its Higher Homologues TiAP and TEHP: Comparison of Equilibria, Kinetics, and Rate of Extraction
 
Creator DAS, D
JUVEKAR, VA
ROY, SB
BHATTACHARYA, R
 
Subject NITRIC-ACID SOLUTIONS
3RD PHASE-FORMATION
ISO-AMYL PHOSPHATE
N-BUTYL PHOSPHATE
TRIBUTYL-PHOSPHATE
URANYL-NITRATE
URANIUM(VI)
DODECANE
SYSTEMS
OCTANE
TiAP
nitric acid
TEHP
U(VI)
bulk liquid membranes
TBP
co-extraction
liquid emulsion membranes
 
Description 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.
 
Publisher TAYLOR & FRANCIS INC
 
Date 2016-01-15T07:59:04Z
2016-01-15T07:59:04Z
2015
 
Type Article
 
Identifier SEPARATION SCIENCE AND TECHNOLOGY, 50(3SI)411-420
0149-6395
1520-5754
http://dx.doi.org/10.1080/01496395.2014.973508
http://dspace.library.iitb.ac.in/jspui/handle/100/18110
 
Language en