Removal of copper from aqueous solutions with zeolites and possible treatment of exhaust materialsZabukovec Logar, Nataša (Avtor)
Arčon, Iztok (Avtor)
Kovač, Janez (Avtor)
Popova, Margarita (Avtor)
Cu2+ ion exchangeTotal toluene oxidationX-ray absorption spectroscopyX-ray photoelectron spectroscopyZeoliteThe mechanism of Cu2+ loading into commercially available natural HEU-type and synthetic LTA-type zeolites for their
possible use in environmental processes, such as water and air treatment applications, was studied. Elemental analysis,
SEM/EDXS, XRD, XAS and XPS analyses revealed 4-fold coordination of Cu2+ cations with oxygen atoms in the pores, a
predominant location of copper atoms on the surface of crystallites and retained crystallinity of zeolites throughout the
processes. The post-treatment of Cu2+-loaded samples with HCl and/or NaCl solutions confirmed the predominantly
reversible sorption of copper on zeolites from aqueous solutions by ion-exchange mechanism and, therefore, excellent
regeneration possibilities for both types of zeolites. Furthermore, with the calcination of exhaust metal-loaded zeolites,
catalysts for total toluene oxidation reaction, as a model VOC pollutant, were obtained.20212021-06-03 16:26:34Neznano6570COBISS_ID: 57116419UDK: 546ISSN pri članku: 0009-286XDOI: 10.1002/cite.202000188NUK URN: URN:SI:UNG:REP:ZDSMU1CQsl