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Abstract In order to prepare efficient, green and environmentally friendly adsorbents, This work was prepare bagasse grafting acrylamide copolymer was prepared by solution method. The adsorption effect and adsorption kinetics of alkali treated bagasse and graft copolymer on bromophenol blue (BPB) in aqueous solution were carried out. Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) was used to characterize its structure and morphology. The results showed that the alkali treatment and grafting processing increased the specific surface area of bagasse, and the adsorption capacities of modified bagasse were improved in the experimental pH range(2-9). In addition, the grafting copolymer has the strongest adsorption capacity for BPB. The adsorption capacity of BPB is 2.11 mg/g, the removal rate reached 70.43%, increased by 56.23% and 30.52% compared with bagasse and alkali treated bagasse, respectively. The adsorption kinetic of bagasse grafting copolymer for BPB is in accord with quasi-secondary kinetics Equation, the adsorption mechanism is mainly chemical adsorption.
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2021, Vol. 34 
