Simultaneous Recovery of Precious and Heavy Metal Ions from Waste Electrical and Electronic Equipment (WEEE) Using Polymer Films Containing Cyphos IL 101

Autor: Katarzyna Witt, Włodzimierz Urbaniak, Małgorzata A. Kaczorowska, Daria Bożejewicz
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Polymers, Vol 13, Iss 9, p 1454 (2021)
Druh dokumentu: article
ISSN: 2073-4360
28482492
DOI: 10.3390/polym13091454
Popis: In this article, the application of a polymer film containing the ionic liquid Cyphos IL 101 for the simultaneous recovery of precious and heavy metal ions ((Ni(II), Zn(II), Co(II), Cu(II), Sn(II), Pb(II), Ag(I), Pd(II), and Au(III)) from waste electrical and electronic equipment (WEEE) is described. The experiments were performed for solutions containing metal ions released from computer e-waste due to leaching carried out with concentrated nitric(V) acid and aqua regia. It was found that the applied polymer film allows for the efficient recovery of precious metals (98.9% of gold, 79.3% of silver, and 63.6% of palladium). The recovery of non-ferrous metals (Co, Ni, Cu, Zn, Sn, and Pb) was less efficient (25–40%). Moreover, the results of the performed sorption/desorption processes show that the polymer film with Cyphos IL 101 can be successfully used after regeneration to recover metals ions several times.
Databáze: Directory of Open Access Journals
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