Preparation Of Phosphorized Granular Activated Carbon From Beet Molasses Using Concentrated H3po4


In the present study, the activation features of phosphoric acid have been investigated using beet molasses as a raw material at 150ºC in production of phosphorized granular activated carbon (PGAC). The quality of the prepared carbon was tested by measuring its iodine number and ability to adsorb methylene blue dye. The density, moisture content, hardness, effective size, and total ash content were also evaluated. The obtained results were compared with a carbon of a commercial grade supplied by the BDH chemical company. The comparison proved that the prepared carbon is of a good quality and comparable to the commercial one. IR analysis showed the (-H2PO3) groups were present on the surface of prepared PGAC which enlarged the pores sizes. The PGAC was used for the sorption of MB dye from aqueous solutions at 25ºC. The equilibrium sorption isotherms have been analyzed by the models Freundlich and Langmuir methods. The Freundlich isotherm had the highest correlation coefficient.