【摘要】 以玉米芯为原料制备生物炭,采用SEM及比表面积分析仪对其表面形貌及孔结构进行了表征,通过批次吸附试验,研究其对水中活性艳蓝的吸附行为。结果表明:玉米芯生物炭对活性艳蓝的吸附在120 min达到平衡,吸附过程符合准二级动力学方程;Langmuir吸附模型能够很好的模拟吸附等温线,最大饱和吸附量为80.01 mg/g。吸附热力学结果显示:玉米芯生物炭对活性艳蓝的吸附是自发的,升高温度有利于吸附。更多还原

【Abstract】 The biochar was prepared by using corncob as raw materials. The scanning electronic microscopy and specific surface area analyzer were used to characterize surface pattern and pore structure of corncob biochar. The adsorption property for reactive brilliant blue onto corncob biochar was studied by a batch of sorption technique. The results indicated that the adsorption of reactive brilliant blue on corncob biochar reached equilibrium within 120 min. The secondorder kinetic model was the best for the adsorption of reactive brilliant blue. The adsorption data could be fitted by Langmuir model and the maximum adsorption capacity was 80.01 mg/g. The thermodynamics results showed that the adsorption process was spontaneous and increasing temperature was beneficial to the adsorption.更多还原