ACTIVATED CARBON PREPARED FROM BIOMASS WASTE, PREPARATION METHOD THEREOF, AND USE THEREOF IN TREATMENT OF NITROPHENOL COMPOUNDS IN WASTEWATER

摘要

#$%^&*AU2020100229A420200326.pdf#####ABSTRACT The present invention discloses a preparation method of activated carbon from a biomass waste. The preparation method includes the following steps: (a) grafting 2-acrylamido-2-methylpropane sulfonic acid onto the surface of a biomass waste; and (b) conducting carbonization on the biomass waste treated by step (a) to obtain activated carbon. Compared with the prior art, the biomass-based activated carbon prepared by the method has a good adsorption capacity to p-nitrophenol, which can reach above 480 mg/g. Moreover, it can almost completely remove lead ions, chromium ions, nickel ions, and arsenic ions from water. The biomass-based activated carbon has good cycle stability. After more than five cycles, its adsorption capacity still remains above 98%. Therefore, the biomass-based activated carbon is a multifunctional comprehensive wastewater adsorbent.