▎ 摘　　要

NOVELTY - Method for preparing activated carbon adsorbent, involves (a) crushing activated carbon raw material into particles, soaking in an acidic solution, removing and washing with distilled water, drying and soaking in an alkaline solution, washing with distilled water, and drying, (b) adding copper sulfate and ferrous sulfate to distilled water, dissolving, adding the activated carbon raw material to the solution, soaking in the solution, adding graphene oxide, stirring, adding into an autoclave, reacting, cooling, filtering and drying, (c) adding the activated carbon raw material in step (b) in a tube furnace, introducing mixed gas, calcining and cooling to obtain an activated carbon precursor, and (d) adding surfactant to distilled water, dissolving, adding the activated carbon precursor, stirring, filtering, drying, adding the dried activated carbon to dopamine aqueous solution, adding tris-hydrochloride buffer solution, stirring, filtering and drying to obtain an activated carbon. USE - The method is useful for preparing activated carbon adsorbent for regenerating and adsorbing methyl orange. DETAILED DESCRIPTION - Method for preparing activated carbon adsorbent, involves (a) crushing activated carbon raw material into particles with a particle size of 1.2-3 cm, soaking in an acidic solution for 6-10 hours, removing and washing with distilled water until it is neutral, drying and soaking in an alkaline solution for 8-15 hours, taking out and washing with distilled water until it is neutral, and drying at 100-110 degrees C for 6-9 hours, (b) adding copper sulfate and ferrous sulfate to distilled water, ultrasonically dissolving, adding the activated carbon raw material in step (a) to the solution, soaking in the solution for 12-20 hours, adding graphene oxide, stirring for 3-6 hours, adding into an autoclave, reacting at 130-150 degrees C for 2-4 hours, cooling, filtering and drying, (c) adding the activated carbon raw material in step (b) in a tube furnace, introducing mixed gas, calcining at 750-880 degrees C for 4-8 hours and cooling to obtain an activated carbon precursor, and (d) adding surfactant to distilled water, ultrasonically dissolving, adding the activated carbon precursor, stirring for 10-20 hours, filtering, drying, adding the dried activated carbon to dopamine aqueous solution, adding 6-15 wt.% tris-hydrochloride buffer solution, stirring for 6-12 hours, filtering and drying to obtain an activated carbon.