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Chemical Papers

, Volume 70, Issue 2, pp 172–179 | Cite as

Transport of iron ions from chloride solutions using cellulose triacetate matrix inclusion membranes with an ionic liquid carrier

  • Monika Baczynska
  • Martyna Rzelewska
  • Magdalena Regel-Rosocka
  • Maciej Wisniewski
Original Paper

Abstract

In this study, liquid membranes denoted as polymer inclusion membranes (PIMs) consisting of cellulose triacetate (CTA) as a polymer matrix, o-nitrophenyl octyl ether (NPOE) as a plasticiser and phosphonium ionic liquids, trihexyltetradecylphosphonium chloride (Cyphos® IL 101) and trihexyltetradecylphosphonium bis(2,4,4-trimethylpentyl)phosphinate (Cyphos® IL 104), as carriers of metal ions were developed. The transport of Fe(II) and Fe(III) from chloride aqueous solutions across PIMs was investigated. It is shown that these phosphonium ionic liquids are effective carriers of Fe(III) ions through PIMs. While, for Fe(II), the highest value of extraction efficiency and recovery factor after 72 h does not exceed 40%, by contrast, the values of these parameters for Fe(III) transport ranged from 60% to almost 100%. Additionally, the results indicate the transport rate to be strongly influenced by the amount of carrier in the membrane. The highest initial flux of Fe(III) and permeability coefficient are noted for the membrane containing 40 mass % Cyphos® IL 101. However, it is shown that the transport of Fe(III) increases as the carrier content is increased then decreases at a content of the carrier equal to 40 mass %. It appears that the Fe(III)-carrier complex decomposes with difficulty at the interface of the membrane-receiving phase, hence leading to low values of recovery factor Fe(III).

Keywords

iron(II) iron(III) metal ion extraction ionic liquid polymer inclusion membrane CTA matrix 

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Copyright information

© Institute of Chemistry, Slovak Academy of Sciences 2015

Authors and Affiliations

  • Monika Baczynska
    • 1
  • Martyna Rzelewska
    • 1
  • Magdalena Regel-Rosocka
    • 1
  • Maciej Wisniewski
    • 1
  1. 1.Institute of Chemical Technology and Engineering, Faculty of Chemical TechnologyPoznan University of TechnologyPoznanPoland

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