Characterization of Date Pits Activated Carbon Adsorbent Using Adsorption Isoterm

Abstract

Date Pits Activated carbon has been characterized using adsorption Isotherms. Batch adsorption was carried out by transient adsorption of a solute from a dilute solution which was made to be of a constant volume, well-mixed batch system. The chromium VI particles initially were of uniform adsorbate concentration and later successful step change in concentration of the external fluid. The adsorption rate shows that the adsorbents are highly porous materials and adsorption takes place at specific sites inside the particle. The pores were generally very small, the internal surface area has orders of magnitude greater than the external area and it was 500m 2 /g to 1000m2

/g. it provides a useful conclusion that the separation that occurs because the difference in molecular weight, shape or polarity cause some molecules to be held more strongly on the surface than others or because the pores are too small to admit the larger molecules. the adsorbing component or adsorbate was found to be held strongly enough to permit data collection for plotting isotherm curves for the chromium VI ions from the fluid with very little adsorption of other components permitting possible regeneration. The adsorption data was well described by Freundlich isotherm.