we have developed adsorbent materials with different properties,
to achieve selective applications depending on the
molecules to be separated. The advantage of the utilization
of an abundant and available residual biomass namely the
apricot stone, as a raw material for activated carbons gives
an additional economical interest to the technical studies.
The apricot stone was prepared by chemical and physical
activations and this study was undertaken with the aim to
optimize the physical parameters such as the initial dye concentration,
pH, particle size, contact time, adsorbent dosage,
agitation speed and temperature. In addition, the equilibrium
adsorption data were fitted to various models to obtain the
constants related to the adsorption phenomena. Equilibrium
and kinetic analysis were conducted to determine the factors
controlling the rate of adsorption, the optimization of various
parameters in the dye recovery and to find out the possibility
of using this material as a low-cost adsorbent for the dye
removal.