茶叶基多孔炭对水中抗生素吸附效果的研究

ue to its rich pore structure and large internal specific surface area, porous carbonmakes it an environmentally friendly adsorbent with strong adsorption capacity and chemicalstability. Tea-based porous charcoal was prepared by carbonization-activation two-step methodusing waste tea as raw materials, sodium hydroxide and potassium hydroxide as activators. Thephysicochemical properties of tea-based porous carbon were characterized by fourier transform infrared and X-ray diffraction, the results showedthat the prepared porous carbon had a rich functional group and amorphous structure. The effects of solution concentration,adsorption time and porous carbon quality on the adsorption of antibiotics in water were analyzed,and the removal rate of antibiotics from porous carbon AC-KOH reached 96.67% at an initialconcentration of 100 mg/L, a dosage of 0.2 g/L, and a shock adsorption time of 120 min. Theadsorption mechanism was studied and found that the adsorption isotherm data fitting was in linewith the Langmuir model.