This study demonstrated the feasibility of sour cherry stones as
a promising precursor for the production of activated carbon with a
noticeable adsorption capacity for the removal of Yellow 18. The
results just showed initial pH value and solution temperature
had effects on the adsorption capacity. The kinetic and isotherm
model analyses revealed that the experimental data well fitted to
the pseudo-second-order model and Langmuir isotherm. The
adsorption process was found to be controlled by external mass
transfer at the earlier stages and by intraparticle diffusion at the
later stages. The thermodynamic parameters indicated a spontaneous
and endothermic adsorption.