Role of surfactants in the behavior of emulsion liquid membranes - development of new surfactants

Fumiyuki Nakashio, Masahiro Goto, Michiaki Matsumoto, Jin Irie, Kazuo Kondo

Research output: Contribution to journalArticle

57 Citations (Scopus)


Surfactants play an important role in the emulsion liquid membrane (henceforth ELM) process. However, only two commercial surfactants have been used so far, Span 80 and polyamine. Relatively little attention has been spent in searching for other suitable surfactants. In order to develop new surfactants for the ELM process, in this study a series of derivatives of glutamic acid dialkyl esters and dialkyl-type quaternary ammonium salts were synthesized. Copper extraction by ELM was carried out in a stirred cell using these surfactants. It was found that glutamic acid dioleyl ester was a more suitable surfactant for the ELM process than Span 80 and polyamine as regards break-up, swelling and demulsification of the W/O emulsion, and enrichment of copper.

Original languageEnglish
Pages (from-to)249-260
Number of pages12
JournalJournal of Membrane Science
Issue number3
Publication statusPublished - Jan 1 1988


All Science Journal Classification (ASJC) codes

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

Cite this