柚子皮活性炭对阳离子染料吸附性能的研究

Study on Adsorption Properties of Activated Carbons Prepared by Pomelo Peel for Cationic Dye

用柚子皮为原料制备活性炭,考察柚子皮活性炭(PPAC)对阳离子染料(亚甲基蓝)的吸附效果。基于静态试验结果,PPAC对亚甲基蓝(MB)染料的吸附行为进行等温吸附、动力学及热力学研究。等温吸附试验结果表明,Langmuir等温吸附模型能很好地描述PPAC对MB的吸附过程。动力学拟合并进行动力学试验结果表明,PPAC对MB染料废水的吸附行为遵循准二级反应速率方程所描述的规律。柚子皮活性炭(PPAC)作为一种价廉、高效的吸附剂材料,在污水处理中具有很好的应用前景,且解决了福建漳州地区柚子皮农林废物处理处置问题。

This study prepared activated carbons（PPAC）from wastes pomelo peel,and investigated its adsorption effect for cationic fuelmethylene blue.Based on static test results,kinetics and thermodynamics,equilibrium studies of adsorption behavior were conducted. The resultsshowed that the Langmuir adsorption isotherm model was adequate to represent the adsorption of MB onto PPAC. The pseudo-second order kineticmodel was suitable to represent the adsorption of MB onto PPAC. The wastes pomelo peel is an inexpensive material for preparing an activated carbonwith high adsorption capacities for MB. It has a good application prospect in sewage treatment and solves the problemof pomelo peel disposal.