ADSORPTION PERFORMANCE OF DBP USING BILOBA LEAF ACTIVATED CARBONS BY PHOSPHORIC ACID ACTIVATION METHOD

In this paper active carbon powder was derived from the biloba leaf using phosphoric acid activation method.Biloba leaf powder of active carbon was selected as adsorbent,DBP as adsorbate.The adsorption efficiency by temperature,contact time,pH were investigated.The adsorption isotherms were linearized,and the thermodynamics and dynamics for the adsorption were discussed.The results showed that adsorption strongly depended on temperature,contact time and pH.Adsorption isotherm equation described in terms of the Langmuir isotherm,adsorption process was spontaneous.The pseudo-second-order model was better to describe the adsorption dynamics rule.