A study of the preparation of activated carbon from corn stalk black liquor lignin

The activated carbon of large specific surface area with micropore as the main component was prepared through chemical activation with corn stalk black liquor lignin as raw material and H3PO4 as chemical activator. The effect of activation temperature on the specific surface area, micropore volume and mesopore volume of the prepared activated carbon BET was closely investigated. The optimum temperature for preparing large specific surface area activated carbon is 700℃. The BET specific surface area and pore volume of the prepared activated carbon can reach 1101m2/g and 0.47ml/g respectively below 700℃. The activated carbon can adsorb the phenol in the simulated effluent in a desirable way and the maximum adsorption quantity can reach 108.7mg/g, and the Langmuir Model can give a desirable description of the adsorption process.