Isotherm, thermodynamic and kinetic studies of Sr2+ adsorption on spherical TiO2/PAN composites


Kasap S., TEL H., Piskin S.

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, cilt.289, ss.537-544, 2011 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 289 Konu: 2
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1007/s10967-011-1131-x
  • Dergi Adı: JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
  • Sayfa Sayıları: ss.537-544

Özet

A spherical polyacrylonitrile-TiO2 composite adsorbent was prepared and its strontium removal potential was investigated. The Langmuir equation fixed well the equilibrium data. The value of a dagger HA degrees A = 8.943 kJ/mol and a dagger GA degrees A = 6.291 kJ/mol at 298 K indicate that the adsorption of strontium onto TiO2/PAN composite adsorbent is an endothermic and non-spontaneous reaction. The kinetic process was described by a pseudo-second-order rate model very well.