Activated Carbon Production from Date Stones Using Phosphoric Acid

Abstract

The effects of activation time and activation temperature on the yield and the adsorptive capacity towards iodine were studied. The yield and the quality of the activated carbon prepared by using H₃PO₄ were compared with that prepared from date stones using the same equipment, and under similar conditions by using ZnCl₂ as an oxidizing agent. The iodine number for the produced activated carbon was higher when H₃PO₄ was used, compared to that when ZnCl₂ was used. The yield obtained when H₃PO₄ was used was lower than the yield when ZnCl₂ was used. The iodine number increases significantly with increasing the activation temperature.

Keywords:

• activated carbon
• chemical activation
• date stones
• fluidized-bed reactor
• iodine number