skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Influence of high voltage electric fields applied across a horizontal liquid-liquid interface on the rate of metal extraction using a rotating diffusion cell

Abstract

The effect of an applied electrical field across a plane liquid-liquid interface on the rate of metal extraction using hydroxyoximes and dialkylphosphoric acids as extractants is examined. The results indicate that applied electric fields have no marked influence on the observed rate of metal extraction when aliphatic hydrocarbons are employed as the diluents in the organic phase. Increases in mass transfer rates of up to 250% were observed when mixtures of octanol and an aliphatic hydrocarbon were employed as the diluent in the organic phase. The mechanism of transfer is thought to be a combination of movement of charges in the bulk of the nonconducting organic phase and electrohydrodynamic flows due to local variations in the effective interfacial tension as a result of the applied electric fields.

Authors:
 [1];  [2]
  1. National Univ. of Science and Technology, Bulawayo (Zimbabwe). Dept. of Chemical Engineering
  2. Univ. of Bradford (United Kingdom). Dept. of Chemical Engineering
Publication Date:
OSTI Identifier:
691500
Resource Type:
Journal Article
Journal Name:
Separation Science and Technology
Additional Journal Information:
Journal Volume: 34; Journal Issue: 13; Other Information: PBD: Sep 1999
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; COPPER; SOLVENT EXTRACTION; ELECTRIC FIELDS; SEPARATION EQUIPMENT; OXIMES; INORGANIC ACIDS; MASS TRANSFER; EFFICIENCY

Citation Formats

Kuipa, P.K., and Hughes, M.A. Influence of high voltage electric fields applied across a horizontal liquid-liquid interface on the rate of metal extraction using a rotating diffusion cell. United States: N. p., 1999. Web. doi:10.1081/SS-100100796.
Kuipa, P.K., & Hughes, M.A. Influence of high voltage electric fields applied across a horizontal liquid-liquid interface on the rate of metal extraction using a rotating diffusion cell. United States. doi:10.1081/SS-100100796.
Kuipa, P.K., and Hughes, M.A. Wed . "Influence of high voltage electric fields applied across a horizontal liquid-liquid interface on the rate of metal extraction using a rotating diffusion cell". United States. doi:10.1081/SS-100100796.
@article{osti_691500,
title = {Influence of high voltage electric fields applied across a horizontal liquid-liquid interface on the rate of metal extraction using a rotating diffusion cell},
author = {Kuipa, P.K. and Hughes, M.A.},
abstractNote = {The effect of an applied electrical field across a plane liquid-liquid interface on the rate of metal extraction using hydroxyoximes and dialkylphosphoric acids as extractants is examined. The results indicate that applied electric fields have no marked influence on the observed rate of metal extraction when aliphatic hydrocarbons are employed as the diluents in the organic phase. Increases in mass transfer rates of up to 250% were observed when mixtures of octanol and an aliphatic hydrocarbon were employed as the diluent in the organic phase. The mechanism of transfer is thought to be a combination of movement of charges in the bulk of the nonconducting organic phase and electrohydrodynamic flows due to local variations in the effective interfacial tension as a result of the applied electric fields.},
doi = {10.1081/SS-100100796},
journal = {Separation Science and Technology},
number = 13,
volume = 34,
place = {United States},
year = {1999},
month = {9}
}