Preparation of wheat straw biochar and its adsorption performance for methyl orange
To explore the adsorption properties of wheat straw biochar on methyl orange before and after alkali modifi-cation,wheat straw biochar was obtained by isolating oxygen and calcining it as raw material.Wheat straw biochar was mod-ified with different concentrations of NaOH,and the adsorption properties of methyl orange on wheat straw biochar before and after modification were compared.The adsorption results showed that the removal rates of methyl orange by wheat straw biochar and 1.0 mol/L NaOH modified biochar were 30.0%and 83.9%,respectively,when the concentration of methyl orange was 10 mg/L and the dosage of biochar was 0.1 g.The adsorption effect of wheat straw biochar modified by NaOH was better than that before modification.The results of adsorption thermodynamics showed that the adsorption of methyl orange by wheat straw biochar was in accordance with the Langmuir model.The kinetic results showed that the ad-sorption of methyl orange by wheat straw biochar was more in line with the pseudo-second-order kinetic equation.
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万方数据
维普
