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

摘要

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 (R- = 0.995), Langmuir (R- = 0.946) and Temkin (R- = 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.