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, vol.289, no.2, pp.537-544, 2011 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 289 Issue: 2
  • Publication Date: 2011
  • Doi Number: 10.1007/s10967-011-1131-x
  • Title of Journal : JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
  • Page Numbers: pp.537-544

Abstract

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.