화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.20, No.4, 1656-1664, July, 2014
DOI10.1016/j.jiec.2013.08.013  Export Citation
Sorption of heavy metal ions from aqueous solution by a novel cast PVA/TiO2 nanohybrid adsorbent functionalized with amine groups
Saeed Abbasizadeh, Ali Reza Keshtkar1, and Mohammad Ali Mousavian†
  • Department of Chemical Engineering, Faculty of Engineering, University of Tehran, Tehran, Iran, Korea
  • 1Nuclear Fuel Cycle School, Nuclear Science and Technology Research Institute, Tehran, Iran
E-mail:
Sorption of Cd(II), Ni(II) and U(VI) ions onto a novel cast PVA/TiO2/APTES nanohybrid adsorbent with variations in adsorbent dose, pH, contact time, initial metal concentration and temperature has been investigated. The adsorbent were characterized by SEM and FTIR analysis. BET surface area, pore diameter and pore volume of adsorbent were 35.98 m2g-1, 3.08 nm and 0.059 cm3g-1, respectively. The kinetic and equilibrium data were accurately described by the double-exponential and Freundlich models for all metals. The maximum sorption capacities were 49.0, 13.1 and 36.1 mgg-1 for Cd(II), Ni(II) and U(VI) ions with pH of 5.5, 5 and 4.5, respectively. Thermodynamic studies showed that the sorption process was favored at higher temperature. The adsorbent can be easily regenerated after 5 cycles of sorption-desorption.
Keywords:PVA/TiO2 nano hybrid adsorbent;Amin groups;Casting;Cadmium(II);Nickel(II);Uranium(VI)
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