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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)
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author
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
2013-07-01 10:06:38
date last changed
2017-01-01 07:14:22
@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},
  volume       = {4},
  year         = {1986},
}