Study On Antibiotic Adsorption Performance Of Rape Straw Biochar Materials

In this paper,the biochar was first prepared by KOH activator using the rape straw.Then the Fe₃O₄/biochar was obtained by coupling the Fe₃O₄ with the above biochar.Last,the biochar was fabricated by one-step method using Zn Cl₂ as the activator.The three types of biochar materials were respectively applied for the adsorption of tetracycline hydrochloride and ciprofloxacin hydrochloride antibiotics in water.The X-ray diffraction（XRD）,scanning electron microscopy（SEM）,N₂adsorption-desorption,Fourier transform infrared spectroscopy（FTIR）test techniques were adopted to study the crystal phases,morphologies,specific surface areas and surface functional groups of biochar materials,respectively.The effects of preparation conditions and solution p H value on the adsorption capacity were also explored.The adsorption kinetics and adsorption isotherms were employed to investigate the adsorption process.The current work will offer some new ideas for the utilization of rape straw agricultural wastes.