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Comparative kinetic and equilibrium investigations on the extraction of U(IV) in nitric acid/Tbp or TLA-Kerosene systems

Abstract

The extraction equilibrium of U(IV) by tributyl-phosphate (Tbp) or trilaurylamine (TLA) in kerosene from nitric acid media was investigated. The effect of the different parameters affecting the extraction was separately studied and compared. The kinetics of extraction of U(IV) by Tbp or TLA was also investigated using a stirred lewis cell. The data showed that the rate of extraction of U(IV) by Tbp is controlled by chemical reactions at the interface. In the TLA system, the extraction of U(IV) is controlled by chemical reactions at the interface and bulk phase. Rate equations show that the extraction of U(IV) is first order dependent on Tbp concentration while it is of fractional negative order with respect to TLA. The effect of temperature on the rate of extraction was also studied and the thermodynamic functions were evaluated for the two systems. 5 figs.
Authors:
Daoud, J A; Khalifa, S M; Abdel Rahman, N; Aly, H F [1] 
  1. Hot laboratories center, Atomic energy authority post code 13758, (Egypt)
Publication Date:
Oct 01, 1995
Product Type:
Miscellaneous
Report Number:
INIS-EG-001; CONF-9411323-
Reference Number:
SCA: 400105; PA: AIX-28:029336; EDB-97:055974; SN: 97001764467
Resource Relation:
Conference: 2. Arab conference on the peaceful uses of atomic energy, Cairo (Egypt), 5-9 Nov 1994; Other Information: PBD: Oct 1995; Related Information: Is Part Of Proceedings of the second Arab conference on the peaceful uses of atomic energy. Part II: A and B; Barakat, M.F.; El-Mashri, S.M. [eds.]; PB: 1199 p.
Subject:
40 CHEMISTRY; URANIUM; EQUILIBRIUM; EXTRACTION; KINETICS; CHEMICAL REACTIONS; COMPARATIVE EVALUATIONS; EXPERIMENTAL DATA; KEROSENE; NITRIC ACID; TBP; THERMODYNAMICS; TRIIODOTHYRONINE
OSTI ID:
455719
Research Organizations:
Atomic Energy Authority, Cairo (Egypt); Arab Atomic Energy Agency (AAEA), Tunis (Tunisia); Middle Eastern Regional Radioisotope Centre for the Arab Countries, Cairo (Egypt)
Country of Origin:
Egypt
Language:
English
Other Identifying Numbers:
Other: ON: DE97620040; ISBN 9973-9927-3-3; TRN: EG9601660029336
Availability:
INIS; OSTI as DE97620040
Submitting Site:
INIS
Size:
pp. 409
Announcement Date:

Citation Formats

Daoud, J A, Khalifa, S M, Abdel Rahman, N, and Aly, H F. Comparative kinetic and equilibrium investigations on the extraction of U(IV) in nitric acid/Tbp or TLA-Kerosene systems. Egypt: N. p., 1995. Web.
Daoud, J A, Khalifa, S M, Abdel Rahman, N, & Aly, H F. Comparative kinetic and equilibrium investigations on the extraction of U(IV) in nitric acid/Tbp or TLA-Kerosene systems. Egypt.
Daoud, J A, Khalifa, S M, Abdel Rahman, N, and Aly, H F. 1995. "Comparative kinetic and equilibrium investigations on the extraction of U(IV) in nitric acid/Tbp or TLA-Kerosene systems." Egypt.
@misc{etde_455719,
title = {Comparative kinetic and equilibrium investigations on the extraction of U(IV) in nitric acid/Tbp or TLA-Kerosene systems}
author = {Daoud, J A, Khalifa, S M, Abdel Rahman, N, and Aly, H F}
abstractNote = {The extraction equilibrium of U(IV) by tributyl-phosphate (Tbp) or trilaurylamine (TLA) in kerosene from nitric acid media was investigated. The effect of the different parameters affecting the extraction was separately studied and compared. The kinetics of extraction of U(IV) by Tbp or TLA was also investigated using a stirred lewis cell. The data showed that the rate of extraction of U(IV) by Tbp is controlled by chemical reactions at the interface. In the TLA system, the extraction of U(IV) is controlled by chemical reactions at the interface and bulk phase. Rate equations show that the extraction of U(IV) is first order dependent on Tbp concentration while it is of fractional negative order with respect to TLA. The effect of temperature on the rate of extraction was also studied and the thermodynamic functions were evaluated for the two systems. 5 figs.}
place = {Egypt}
year = {1995}
month = {Oct}
}