Extraction of palladium by liquid surfactant membranes using new surfactants

Takahiko Kakoi; Masahiro Goto; Kazuo Kondo; Fumiyuki Nakashio

doi:10.1016/0376-7388(93)80020-X

Extraction of palladium by liquid surfactant membranes using new surfactants

Takahiko Kakoi, Masahiro Goto, Kazuo Kondo, Fumiyuki Nakashio

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

Using novel synthetic surfactants, the extraction of palladium(II) by liquid surfactant membranes (LSM) containing didodecylmonothiophosphoric acid as a carrier was conducted in a stirred cell. The role of the surfactants on the extraction behavior of palladium by the LSMs was systematically studied. It was found that the stability of the emulsion and the permeation rate of palladium are strongly influenced by the surfactants used. The effects of the surfactant, extractant, internal hydrogen ion and thiourea (stripping reagent) concentrations on the palladium extraction are discussed. The presence of thiourea in the internal aqueous phase is a key factor in palladium extraction with an LSM. Extraction of more than 95% could be attained in a few minutes under optimum surfactant and carrier concentrations.

Original language	English
Pages (from-to)	249-258
Number of pages	10
Journal	Journal of Membrane Science
Volume	84
Issue number	3
DOIs	https://doi.org/10.1016/0376-7388(93)80020-X
Publication status	Published - Oct 14 1993

All Science Journal Classification (ASJC) codes

Biochemistry
Materials Science(all)
Physical and Theoretical Chemistry
Filtration and Separation

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10.1016/0376-7388(93)80020-X

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AU - Kakoi, Takahiko

AU - Goto, Masahiro

AU - Kondo, Kazuo

AU - Nakashio, Fumiyuki

PY - 1993/10/14

Y1 - 1993/10/14

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AB - Using novel synthetic surfactants, the extraction of palladium(II) by liquid surfactant membranes (LSM) containing didodecylmonothiophosphoric acid as a carrier was conducted in a stirred cell. The role of the surfactants on the extraction behavior of palladium by the LSMs was systematically studied. It was found that the stability of the emulsion and the permeation rate of palladium are strongly influenced by the surfactants used. The effects of the surfactant, extractant, internal hydrogen ion and thiourea (stripping reagent) concentrations on the palladium extraction are discussed. The presence of thiourea in the internal aqueous phase is a key factor in palladium extraction with an LSM. Extraction of more than 95% could be attained in a few minutes under optimum surfactant and carrier concentrations.

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Extraction of palladium by liquid surfactant membranes using new surfactants

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