Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Solvent Extraction of Phosphoric Acid with Long Chain Tertiary Amines

Stenström, Stig LU ; Wingefors, S and Aly, Gharib LU (1986) In Solvent Extraction and Ion Exchange 4(5). p.883-905
Abstract
Solvent extraction of phosphoric acid with Alamine 336 and tri-n-octylamine in toluene has been investigated. The activity of phosphoric acid is expressed as a polynomial of ionic strength and Bromley's model for electrolyte solutions is employed for calculation of ionic activity coefficients. Three species R3N (H3P04) n with n = 1, 2 and 3 in the organic phase are taken into account for explanation of the distribution equilibria. The extraction constants have been determined as log K11 = 2.05, log K12 = 3.61 and log K13 = 3.84 respectively. Aggregation and other non-ideal behaviour in the organic phase are described by letting the corresponding activity coefficient quotients be a function of the total concentration of acid in the organic... (More)
Solvent extraction of phosphoric acid with Alamine 336 and tri-n-octylamine in toluene has been investigated. The activity of phosphoric acid is expressed as a polynomial of ionic strength and Bromley's model for electrolyte solutions is employed for calculation of ionic activity coefficients. Three species R3N (H3P04) n with n = 1, 2 and 3 in the organic phase are taken into account for explanation of the distribution equilibria. The extraction constants have been determined as log K11 = 2.05, log K12 = 3.61 and log K13 = 3.84 respectively. Aggregation and other non-ideal behaviour in the organic phase are described by letting the corresponding activity coefficient quotients be a function of the total concentration of acid in the organic phase. (Less)
Please use this url to cite or link to this publication:
author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Solvent Extraction and Ion Exchange
volume
4
issue
5
pages
883 - 905
publisher
Taylor & Francis
external identifiers
  • wos:A1986E517500001
  • scopus:0022800864
ISSN
0736-6299
DOI
10.1080/07366298608917899
language
English
LU publication?
yes
id
8e356dc7-ec3f-4493-b0aa-0091ba3739a9 (old id 3914155)
date added to LUP
2016-04-01 16:45:35
date last changed
2023-09-05 00:43:15
@article{8e356dc7-ec3f-4493-b0aa-0091ba3739a9,
  abstract     = {{Solvent extraction of phosphoric acid with Alamine 336 and tri-n-octylamine in toluene has been investigated. The activity of phosphoric acid is expressed as a polynomial of ionic strength and Bromley's model for electrolyte solutions is employed for calculation of ionic activity coefficients. Three species R3N (H3P04) n with n = 1, 2 and 3 in the organic phase are taken into account for explanation of the distribution equilibria. The extraction constants have been determined as log K11 = 2.05, log K12 = 3.61 and log K13 = 3.84 respectively. Aggregation and other non-ideal behaviour in the organic phase are described by letting the corresponding activity coefficient quotients be a function of the total concentration of acid in the organic phase.}},
  author       = {{Stenström, Stig and Wingefors, S and Aly, Gharib}},
  issn         = {{0736-6299}},
  language     = {{eng}},
  number       = {{5}},
  pages        = {{883--905}},
  publisher    = {{Taylor & Francis}},
  series       = {{Solvent Extraction and Ion Exchange}},
  title        = {{Solvent Extraction of Phosphoric Acid with Long Chain Tertiary Amines}},
  url          = {{http://dx.doi.org/10.1080/07366298608917899}},
  doi          = {{10.1080/07366298608917899}},
  volume       = {{4}},
  year         = {{1986}},
}