Feasibility of ionic liquids as alternative separation media for industrial solvent extraction processes

Kazunori Nakashima, Fukiko Kubota, Tatsuo Maruyama, Masahiro Goto

研究成果: Article査読

258 被引用数 (Scopus)

抄録

Extraction of rare earth metals into ionic liquids (ILs) from aqueous solutions was investigated using octyl(phenyl)-N,N-diisobutylcarbamoylmethyl phosphine oxide (CMPO) as an extractant. Use of ILs greatly enhanced the extraction efficiency and selectivity of CMPO for metal ions compared to when n-dodecane was used as the extracting solvent. The extraction mechanism has been studied by slope analysis and extraction tests, and these confirmed that the metal extraction proceeds via a cation-exchange mechanism. Furthermore, stripping of metals from ILs into an aqueous phase by complexing agents and recycling of the extracting ILs phase was successfully accomplished.

本文言語English
ページ(範囲)4368-4372
ページ数5
ジャーナルIndustrial and Engineering Chemistry Research
44
12
DOI
出版ステータスPublished - 2005 6 8

ASJC Scopus subject areas

  • 化学 (全般)
  • 化学工学(全般)
  • 産業および生産工学

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