Preparation of high specific surface area and high adsorptive activated carbon by KOH activation

Using mangosteen shell as raw material and KOH as the activator, the effects of different conditions on the yield of activated carbon, methylene blue, and iodine adsorption value were studied. Four factors were selected as an impregnation ratio, concentration of activator, activation temperature and activation time. The optimum technological parameters for preparing mangosteen shell activated carbon was determined by orthogonal experiment. The results were analyzed by pore size analysis and spectral analysis. Potassium hydroxide as an activator can easily produce macroporous activated carbon, which is a good adsorbent for garment printing and dyeing wastewater.