The effect of ionic strength on the extraction of thorium(IV) from perchlorate solution by didodecylphosphoric acid (HDDPA)

M. A. Bayyari; M. K. Nazal; F. I. Khalili

doi:10.1016/j.arabjc.2010.02.007

The effect of ionic strength on the extraction of thorium(IV) from perchlorate solution by didodecylphosphoric acid (HDDPA)

M. A. Bayyari
, M. K. Nazal
, F. I. Khalili^*

^*Corresponding author for this work

Applied Research Center for Environment and Marine Studies

Research output: Contribution to journal › Article › peer-review

34 Scopus citations

Abstract

Extraction of Th(IV) ion from perchlorate media at high ionic strength (I = 1.00, 3.00 and 5.00 M) using didodecylphosphoric acid was studied. The effect of HDDPA concentration, ionic strength, pcH and temperature on the extraction processes have been studied in perchlorate media. From the equation of the extraction process, (K_ex) extraction constant can be calculated from the distribution ratio D_c values at different temperatures. Enthalpy, free energy and entropy changes were determined. The composition of the complex formed were established to correspond to [Th(X)₄(HR₂)_Y]_org, where X = ClO₄^-, Y = 1 or 2, HR₂ is HDDPA molecule and R₂ is deprotonated HDDPA molecule.

Original language	English
Pages (from-to)	115-119
Number of pages	5
Journal	Arabian Journal of Chemistry
Volume	3
Issue number	2
DOIs	https://doi.org/10.1016/j.arabjc.2010.02.007
State	Published - Apr 2010

Keywords

Extraction
HDDPA
Ionic strength
Perchlorate solution
Thorium(IV)

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering

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10.1016/j.arabjc.2010.02.007

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title = "The effect of ionic strength on the extraction of thorium(IV) from perchlorate solution by didodecylphosphoric acid (HDDPA)",

abstract = "Extraction of Th(IV) ion from perchlorate media at high ionic strength (I = 1.00, 3.00 and 5.00 M) using didodecylphosphoric acid was studied. The effect of HDDPA concentration, ionic strength, pcH and temperature on the extraction processes have been studied in perchlorate media. From the equation of the extraction process, (Kex) extraction constant can be calculated from the distribution ratio Dc values at different temperatures. Enthalpy, free energy and entropy changes were determined. The composition of the complex formed were established to correspond to [Th(X)4(HR2)Y]org, where X = ClO4-, Y = 1 or 2, HR2 is HDDPA molecule and R2 is deprotonated HDDPA molecule.",

keywords = "Extraction, HDDPA, Ionic strength, Perchlorate solution, Thorium(IV)",

author = "Bayyari, \{M. A.\} and Nazal, \{M. K.\} and Khalili, \{F. I.\}",

year = "2010",

month = apr,

doi = "10.1016/j.arabjc.2010.02.007",

language = "English",

volume = "3",

pages = "115--119",

journal = "Arabian Journal of Chemistry",

issn = "1878-5352",

publisher = "Elsevier BV",

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TY - JOUR

T1 - The effect of ionic strength on the extraction of thorium(IV) from perchlorate solution by didodecylphosphoric acid (HDDPA)

AU - Bayyari, M. A.

AU - Nazal, M. K.

AU - Khalili, F. I.

PY - 2010/4

Y1 - 2010/4

N2 - Extraction of Th(IV) ion from perchlorate media at high ionic strength (I = 1.00, 3.00 and 5.00 M) using didodecylphosphoric acid was studied. The effect of HDDPA concentration, ionic strength, pcH and temperature on the extraction processes have been studied in perchlorate media. From the equation of the extraction process, (Kex) extraction constant can be calculated from the distribution ratio Dc values at different temperatures. Enthalpy, free energy and entropy changes were determined. The composition of the complex formed were established to correspond to [Th(X)4(HR2)Y]org, where X = ClO4-, Y = 1 or 2, HR2 is HDDPA molecule and R2 is deprotonated HDDPA molecule.

AB - Extraction of Th(IV) ion from perchlorate media at high ionic strength (I = 1.00, 3.00 and 5.00 M) using didodecylphosphoric acid was studied. The effect of HDDPA concentration, ionic strength, pcH and temperature on the extraction processes have been studied in perchlorate media. From the equation of the extraction process, (Kex) extraction constant can be calculated from the distribution ratio Dc values at different temperatures. Enthalpy, free energy and entropy changes were determined. The composition of the complex formed were established to correspond to [Th(X)4(HR2)Y]org, where X = ClO4-, Y = 1 or 2, HR2 is HDDPA molecule and R2 is deprotonated HDDPA molecule.

KW - Extraction

KW - HDDPA

KW - Ionic strength

KW - Perchlorate solution

KW - Thorium(IV)

UR - https://www.scopus.com/pages/publications/77950296846

U2 - 10.1016/j.arabjc.2010.02.007

DO - 10.1016/j.arabjc.2010.02.007

M3 - Article

AN - SCOPUS:77950296846

SN - 1878-5352

VL - 3

SP - 115

EP - 119

JO - Arabian Journal of Chemistry

JF - Arabian Journal of Chemistry

IS - 2

ER -

The effect of ionic strength on the extraction of thorium(IV) from perchlorate solution by didodecylphosphoric acid (HDDPA)

Abstract

Keywords

ASJC Scopus subject areas

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