Continuous process for selective metal extraction with an ionic liquid

D. Parmentier, S. Paradis, S.J. Metz, S.K. Wiedmer, M.C. Kroon

    Research output: Contribution to journalArticleAcademicpeer-review

    15 Citations (Scopus)

    Abstract

    This work describes for the first time a continuous process for selective metal extraction with an ionic liquid (IL) at room temperature. The hydrophobic fatty acid based IL tetraoctylphosphonium oleate ([P8888][oleate]) was specifically chosen for its low viscosity and high selectivity towards transition metals. Applying [P8888][oleate] for continuous metal ion extraction with 0.1 M sodium oxalate for regeneration resulted in a process with good and stable extraction efficiencies over time. The selectivity of the IL resulted in a process in which cobalt was selectively removed from two mixed salt solutions (Co/Na, Ca/Co/K) to obtain a pure cobalt stream after stripping the IL. The performed experiments showed that the contact time of the IL for extraction and stripping strongly influenced the achieved efficiencies. The stability of the IL was tested and it was shown that the fatty acid based IL was stable for the duration of the experiment. Liposome tests showed that the IL is very hydrophobic, which limits its leakage towards the water phase, but also results in a higher toxicity towards cell membranes. Economic analysis shows that the IL based process is not (yet) economical compared to ion-exchange resins, in case demineralised water is the only product. However, if the recovery of valuable metals is also taken into account and/or if brine disposal is an issue, then continuous IL metal extraction systems must be regarded as promising alternatives.

    Original languageEnglish
    Pages (from-to)553-560
    Number of pages8
    JournalChemical Engineering Research and Design
    Volume109
    DOIs
    Publication statusPublished - 1 May 2016

    Fingerprint

    Ionic Liquids
    Ionic liquids
    Metals
    Oleic Acid
    Cobalt
    Fatty acids
    Fatty Acids
    Ion Exchange Resins
    Oxalic Acid
    Ion exchange resins
    Water
    Liposomes
    Leakage (fluid)
    Economic analysis
    Cell membranes
    Liquid metals
    Contacts (fluid mechanics)
    Transition metals
    Metal ions
    Toxicity

    Keywords

    • Continuous metal extraction
    • Ionic liquid
    • Selective metal extraction
    • Tetraoctylphosphonium oleate
    • Transition metals

    Cite this

    Parmentier, D. ; Paradis, S. ; Metz, S.J. ; Wiedmer, S.K. ; Kroon, M.C. / Continuous process for selective metal extraction with an ionic liquid. In: Chemical Engineering Research and Design. 2016 ; Vol. 109. pp. 553-560.
    @article{777f02c2fa3e4d5696e5b99058af5213,
    title = "Continuous process for selective metal extraction with an ionic liquid",
    abstract = "This work describes for the first time a continuous process for selective metal extraction with an ionic liquid (IL) at room temperature. The hydrophobic fatty acid based IL tetraoctylphosphonium oleate ([P8888][oleate]) was specifically chosen for its low viscosity and high selectivity towards transition metals. Applying [P8888][oleate] for continuous metal ion extraction with 0.1 M sodium oxalate for regeneration resulted in a process with good and stable extraction efficiencies over time. The selectivity of the IL resulted in a process in which cobalt was selectively removed from two mixed salt solutions (Co/Na, Ca/Co/K) to obtain a pure cobalt stream after stripping the IL. The performed experiments showed that the contact time of the IL for extraction and stripping strongly influenced the achieved efficiencies. The stability of the IL was tested and it was shown that the fatty acid based IL was stable for the duration of the experiment. Liposome tests showed that the IL is very hydrophobic, which limits its leakage towards the water phase, but also results in a higher toxicity towards cell membranes. Economic analysis shows that the IL based process is not (yet) economical compared to ion-exchange resins, in case demineralised water is the only product. However, if the recovery of valuable metals is also taken into account and/or if brine disposal is an issue, then continuous IL metal extraction systems must be regarded as promising alternatives.",
    keywords = "Continuous metal extraction, Ionic liquid, Selective metal extraction, Tetraoctylphosphonium oleate, Transition metals",
    author = "D. Parmentier and S. Paradis and S.J. Metz and S.K. Wiedmer and M.C. Kroon",
    year = "2016",
    month = "5",
    day = "1",
    doi = "10.1016/j.cherd.2016.02.034",
    language = "English",
    volume = "109",
    pages = "553--560",
    journal = "Chemical Engineering Research and Design",
    issn = "0263-8762",
    publisher = "Institution of Chemical Engineers",

    }

    Continuous process for selective metal extraction with an ionic liquid. / Parmentier, D.; Paradis, S.; Metz, S.J.; Wiedmer, S.K.; Kroon, M.C.

    In: Chemical Engineering Research and Design, Vol. 109, 01.05.2016, p. 553-560.

    Research output: Contribution to journalArticleAcademicpeer-review

    TY - JOUR

    T1 - Continuous process for selective metal extraction with an ionic liquid

    AU - Parmentier, D.

    AU - Paradis, S.

    AU - Metz, S.J.

    AU - Wiedmer, S.K.

    AU - Kroon, M.C.

    PY - 2016/5/1

    Y1 - 2016/5/1

    N2 - This work describes for the first time a continuous process for selective metal extraction with an ionic liquid (IL) at room temperature. The hydrophobic fatty acid based IL tetraoctylphosphonium oleate ([P8888][oleate]) was specifically chosen for its low viscosity and high selectivity towards transition metals. Applying [P8888][oleate] for continuous metal ion extraction with 0.1 M sodium oxalate for regeneration resulted in a process with good and stable extraction efficiencies over time. The selectivity of the IL resulted in a process in which cobalt was selectively removed from two mixed salt solutions (Co/Na, Ca/Co/K) to obtain a pure cobalt stream after stripping the IL. The performed experiments showed that the contact time of the IL for extraction and stripping strongly influenced the achieved efficiencies. The stability of the IL was tested and it was shown that the fatty acid based IL was stable for the duration of the experiment. Liposome tests showed that the IL is very hydrophobic, which limits its leakage towards the water phase, but also results in a higher toxicity towards cell membranes. Economic analysis shows that the IL based process is not (yet) economical compared to ion-exchange resins, in case demineralised water is the only product. However, if the recovery of valuable metals is also taken into account and/or if brine disposal is an issue, then continuous IL metal extraction systems must be regarded as promising alternatives.

    AB - This work describes for the first time a continuous process for selective metal extraction with an ionic liquid (IL) at room temperature. The hydrophobic fatty acid based IL tetraoctylphosphonium oleate ([P8888][oleate]) was specifically chosen for its low viscosity and high selectivity towards transition metals. Applying [P8888][oleate] for continuous metal ion extraction with 0.1 M sodium oxalate for regeneration resulted in a process with good and stable extraction efficiencies over time. The selectivity of the IL resulted in a process in which cobalt was selectively removed from two mixed salt solutions (Co/Na, Ca/Co/K) to obtain a pure cobalt stream after stripping the IL. The performed experiments showed that the contact time of the IL for extraction and stripping strongly influenced the achieved efficiencies. The stability of the IL was tested and it was shown that the fatty acid based IL was stable for the duration of the experiment. Liposome tests showed that the IL is very hydrophobic, which limits its leakage towards the water phase, but also results in a higher toxicity towards cell membranes. Economic analysis shows that the IL based process is not (yet) economical compared to ion-exchange resins, in case demineralised water is the only product. However, if the recovery of valuable metals is also taken into account and/or if brine disposal is an issue, then continuous IL metal extraction systems must be regarded as promising alternatives.

    KW - Continuous metal extraction

    KW - Ionic liquid

    KW - Selective metal extraction

    KW - Tetraoctylphosphonium oleate

    KW - Transition metals

    UR - http://www.scopus.com/inward/record.url?scp=84960932401&partnerID=8YFLogxK

    U2 - 10.1016/j.cherd.2016.02.034

    DO - 10.1016/j.cherd.2016.02.034

    M3 - Article

    AN - SCOPUS:84960932401

    VL - 109

    SP - 553

    EP - 560

    JO - Chemical Engineering Research and Design

    JF - Chemical Engineering Research and Design

    SN - 0263-8762

    ER -