Removal of UO22+ from Aqueous Solutions by Maleic Anhydride-Styrene-vinyl acetate Terpolymer Modified with Ethylenediamine and Diethylenetriamine


Creative Commons License

ŞİMŞEK S. , YILMAZ E.

ASIAN JOURNAL OF CHEMISTRY, cilt.25, ss.8087-8092, 2013 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 25 Konu: 14
  • Basım Tarihi: 2013
  • Doi Numarası: 10.14233/ajchem.2013.15089a
  • Dergi Adı: ASIAN JOURNAL OF CHEMISTRY
  • Sayfa Sayıları: ss.8087-8092

Özet

Maleic anhydride-styrene-vinyl acetate (MA-S-VA) terpolymer was prepared. It was modified by ethylenediamine (EDA) and diethylenetriamine (DETA) in order to get cross-linked polymers bearing carboxyl and amine groups. They were shown as MA-S-VA-EDA and MA-S-VA-DETA, and used as an adsorbent for the removal of UO22+ from water. The characterizations of structures of all the polymers were performed by Fourier transform infrared. The adsorptive features of adsorbents were then investigated for UO22+ in view of dependency on ion concentration, temperature and kinetics. Experimentally obtained isotherms were evaluated with reference to Langmuir, Freundlich and Dubinin-Radushkevich models. The maximum monolayer adsorption capacity for UO22+ was found to be 0.58 and 2.56 mol kg(-1) for MA-S-VA-EDA and MA-S-VA-DETA, respectively. It is suggested that the new modified polymers prepared in our laboratory as new adsorbents for uranyl ions.