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Studies of Kinetic and Equilibrium isotherm models for the Sorption of Cyanide ion on to Almond shell

Author Affiliations

  • 1Uttarakhand Technical University, Dehradun
  • 2 Department of Biotechnology, S. D. College of Engineering and Technology, Muzaffarnagar-251001, UP, INDIA
  • 3 Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, INDIA

Res.J.chem.sci., Volume 4, Issue (2), Pages 20-24, February,18 (2014)


Bioadsorption of cyanide by almond shell in batch reactor has been carried out. The optimum bioadsorbent dose is 20g/L for an optimum agitation time 90 minute. The % removal of cyanide decreased with increased initial concentration of cyanide. The experimental data have been analyzed using the Freundlich (Rē = 0.995), Langmuir (Rē = 0.946) and Temkin (Rē = 0.919) isotherm models. These models are well represented by indicating favorable isotherm. Adsorption of cyanide onto almond shell obeyed the pseudo second order rate equation.


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