Journal of Radioanalytical and Nuclear Chemistry

, Volume 297, Issue 1, pp 1–8

Removal of cesium by spherical resorcinol–formaldehyde resin beads: Sorption and kinetic studies

  • Charu Dwivedi
  • Sanjay Kumar Pathak
  • Manmohan Kumar
  • Subhash Chandra Tripathi
  • Parma Nand Bajaj
Article

DOI: 10.1007/s10967-012-2320-y

Cite this article as:
Dwivedi, C., Pathak, S.K., Kumar, M. et al. J Radioanal Nucl Chem (2013) 297: 1. doi:10.1007/s10967-012-2320-y

Abstract

Batch equilibrium studies were conducted at 20 ± 0.5 °C with indigenously synthesized spherical resorcinol–formaldehyde resin beads, using radioanalytical technique, to determine their capacity for sorption of cesium ions from alkaline medium. Equilibrium isotherm studies were carried out, by varying the initial concentrations of cesium from 0.1 to 50 mM. The liquid-to-solid phase ratio of ~100 ml:1 g was maintained for all the sorption experiments. The equilibrium data were fitted to Langmuir and Freundlich isotherm models. It was observed that Freundlich isotherm explains sorption process nicely. The effect of resin size on percentage cesium ion uptake was also investigated, and 20–40 mesh size was found to be the optimum particle size. The cesium sorption capacity of the beads was determined to be ~238 mg/g. The kinetics of the sorption was studied at different initial cesium ion concentrations, and the kinetics data were fitted into various kinetics models. The kinetics of the cesium ion sorption was found to be pseudo second-order. The mechanistic steps involved were found to be complex, consisting of both film diffusion and intraparticle diffusion with film diffusion as the rate limiting step.

Keywords

Sorption equilibriumSorption kineticsCesium removalResorcinol–formaldehydeRadioactive waste

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2012

Authors and Affiliations

  • Charu Dwivedi
    • 1
  • Sanjay Kumar Pathak
    • 2
  • Manmohan Kumar
    • 1
  • Subhash Chandra Tripathi
    • 2
  • Parma Nand Bajaj
    • 1
  1. 1.Radiation & Photochemistry DivisionBhabha Atomic Research CentreMumbaiIndia
  2. 2.Fuel Reprocessing DivisionBhabha Atomic Research CentreMumbaiIndia