Jump to main content
Jump to site search

Issue 91, 2015
Previous Article Next Article

Uranium(VI) adsorption from aqueous solutions using poly(vinyl alcohol)/carbon nanotube composites

Author affiliations

Abstract

Poly(vinyl alcohol)/multiwalled carbon nanotubes (PVA/MWCNTs) composite hydrogels were prepared by a dispersion method and their ability to adsorb and remove uranyl ions from aqueous solutions was investigated. The prepared composites were characterized by XRD, TEM, SEM and FTIR. The effect of contact time, solution pH, initial UO22+ ion concentration and temperature on UO22+ ion adsorption from aqueous solution onto the prepared hydrogels was studied. The obtained results illustrated that, dispersion of MWCNTs into the PVA matrix enhanced the removal efficiency of UO22+ ions compared to PVA only. The Langmuir and Freundlich adsorption models have been applied to evaluate the adsorption efficiency and the data correlated well with the Langmuir model. Thermodynamic parameters (ΔH°, ΔS°, ΔG°) were determined which indicated that the UO22+ ion adsorption process onto the prepared hydrogels was exothermic and spontaneous. The adsorbed UO22+ can be desorbed effectively by 0.1 M EDTA.

Graphical abstract: Uranium(vi) adsorption from aqueous solutions using poly(vinyl alcohol)/carbon nanotube composites

Back to tab navigation

Publication details

The article was received on 04 Jun 2015, accepted on 24 Aug 2015 and first published on 24 Aug 2015


Article type: Paper
DOI: 10.1039/C5RA10264B
Author version
available:
Download author version (PDF)
RSC Adv., 2015,5, 74220-74229

  •   Request permissions

    Uranium(VI) adsorption from aqueous solutions using poly(vinyl alcohol)/carbon nanotube composites

    Z. Abdeen and Z. F. Akl, RSC Adv., 2015, 5, 74220
    DOI: 10.1039/C5RA10264B

Search articles by author

Spotlight

Advertisements