Preparation,characterization and adsorption performance of corn straw biochar
In the article,biochar was prepared from corn stover,and its structure was characterised by Fourier transform infrared spectroscopy,scanning electron microscope and specific surface area tester,and the adsorption performance of biochar on phenol under different conditions was investigated.The results showed that the microstructural integrity of the biochar gradually decreased and the pore size gradually increased with the increase of carbonation temperature,and the surface contained a large number of polar functional groups,which had a good promotion effect on the adsorption of phenol in solution;the best adsorption performance was obtained for the biochar prepared at a carbonation temperature of 600℃,with water vapour as the ambient gas and corn stover with a particle size of 40 mesh;the best adsorption performance was achieved when the dosage of CSBC-W600 was 0.5 g,the reaction temperature was 35℃,the oscillation frequency was 150 r/min,the adsorption time was 4 h,the initial concentration of phenol was 100 mg/L,and the reaction volume was 50 mL,99.5%of phenol was removed.
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