Study on preparation of activated carbon used for adsorbing phenol from the timber surplus of eucalyptus
The activated carbon was prepared by microwave H3PO4 with timber as material. The preparation conditions of activated carbon were optimized by orthogonal experiment. Under the condition that the microwave power was 800 W and the timber surplus of eucalyptus was 30 g, the suitable technology on preparation activated carbon with H3PO4 by microwave irradiation was obtained; the weight ratio of H3PO4 to the timber surplus of eucalyptus was 2-1 ,H3PO4 solution mass concentration was 70% .impregnating time was 20 h,microwave irradiation time was 25 min,the activated carbon yield reach 37.8% and the adsorption capacity on phenol was 154.3 mg/g.
activated carbonthe timber surplus of eucalyptusphenolmicrowaveH3PO4