Separation properties of polymer inclusion membranes with tetrabutylammonium bromide in selective transport and recovery of gold

Polymer inclusion membranes (PIMs) with tetrabutylammonium bromide (TBAB) as the ion carrier and cellulose triacetate (CTA) as the polymer support were used for selective transport of gold(III) from hydrochloric acid solutions containing Pd(II) and Pt(IV). TBAB is a novel ionic liquid (IL) with very...

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Bibliographic Details
Published inChemical and Process Engineering Vol. 46; no. 3; p. 100
Main Author Pospiech, Beata
Format Journal Article
LanguageEnglish
Published Warsaw Polish Academy of Sciences 01.07.2025
Subjects
Cellulose triacetate
Gold
Hydrochloric acid
Ionic liquids
Membranes
Palladium
Platinum
Polymers
Selectivity
Tetrabutylammonium bromide
Transport rate
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ISSN2300-1925
0208-6425
2300-1925
DOI10.24425/cpe.2025.153685

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Summary:Polymer inclusion membranes (PIMs) with tetrabutylammonium bromide (TBAB) as the ion carrier and cellulose triacetate (CTA) as the polymer support were used for selective transport of gold(III) from hydrochloric acid solutions containing Pd(II) and Pt(IV). TBAB is a novel ionic liquid (IL) with very good extraction properties for selected precious metals. The transport rate of Au(III) was higher than that of Pt(IV) and Pd(II). The obtained selectivity order was as follows: Au(III) > Pd(II) > Pt(IV). The selectivity coefficients were: SAu=Pd = 2:5 and SAu=Pt = 3:2. The results show that the application of PIM composed of 55% w/w CTA, 25% w/w NPOE and 20% w/w TBAB can be used as an effective method of recovering Au(III) from leach liquor of electronic-waste.
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ISSN:2300-1925
0208-6425
2300-1925
DOI:10.24425/cpe.2025.153685