Factors influencing phase-disengagement rates in solvent-extraction systems employing tertiary amine extractants

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The primary purpose of the present investigation was to examine the effects of amine size and structure on phase disengagement. Nine commercial tertiary amines were tested together with four laboratory-quality amines for uranium extraction and both organic-continuous (OC) and aqueous-continuous (AC) phase disengagement under Amex-type conditions. Synthetic acid sulfate solutions with and without added colloidal silica and actual ore leach solutions were used as the aqueous phases. Phase disengagement results were correlated with amine size and branching and solution wetting behavior on a silicate (glass) surface. The results suggest that the performance of some Amex systems may be improved by ... continued below

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Pages: 36

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Moyer, B.A. & McDowell, W.J. January 1, 1981.

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Description

The primary purpose of the present investigation was to examine the effects of amine size and structure on phase disengagement. Nine commercial tertiary amines were tested together with four laboratory-quality amines for uranium extraction and both organic-continuous (OC) and aqueous-continuous (AC) phase disengagement under Amex-type conditions. Synthetic acid sulfate solutions with and without added colloidal silica and actual ore leach solutions were used as the aqueous phases. Phase disengagement results were correlated with amine size and branching and solution wetting behavior on a silicate (glass) surface. The results suggest that the performance of some Amex systems may be improved by using branched chain tertiary amine extractants of higher molecular weight than are now normally used.

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Pages: 36

Notes

NTIS, PC A03/MF A01.

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  • Symposium on separation science and technology for energy applications, Gatlinburg, TN, USA, 5 May 1981

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  • Other: DE82017413
  • Report No.: CONF-810520-7
  • Grant Number: W-7405-ENG-26
  • Office of Scientific & Technical Information Report Number: 5367736
  • Archival Resource Key: ark:/67531/metadc1074583

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • January 1, 1981

Added to The UNT Digital Library

  • Feb. 4, 2018, 10:51 a.m.

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  • March 27, 2018, 6:44 p.m.

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Moyer, B.A. & McDowell, W.J. Factors influencing phase-disengagement rates in solvent-extraction systems employing tertiary amine extractants, article, January 1, 1981; Tennessee. (digital.library.unt.edu/ark:/67531/metadc1074583/: accessed April 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.