柿叶粉对亚甲基蓝吸附性能的研究  

Study on adsorption performance of methylene blue by persimmon leaf

作　　者：彭元[1] 张利平[1] 程先忠[1] 

机构地区：[1]武汉轻工大学化学与环境工程学院,湖北武汉430023

出　　处：《武汉轻工大学学报》2015年第1期47-51,共5页Journal of Wuhan Polytechnic University

摘　　要：为了研究柿叶在处理染料废水中的脱色效果,以亚甲基蓝模拟废水为研究对象,考察了溶液p H值、振荡时间、吸附剂用量、盐离子浓度、染料浓度及温度对柿叶吸附水溶液中的亚甲基蓝(MB)的影响。实验数据用Langmuir、Freundlich等温吸附模型对吸附平衡数据进行拟合。结果表明:Langmuir、Freundlich等温吸附方程能很好描述柿叶对亚甲基蓝的吸附行为;吸附过程符合准二级动力学模型。In order to explore the effects of persimmon leaf on the absorption of dye wastewater, simulated wastewater of methylene blue was used as a research object, and the absorption effects of the persimmon leaf was investigated on the methylene blue in aqueous solution in various conditions including solution pH, adsorbent dose, salt ionic strength, initial concentration of methylene blue and temperature. The shaking time, Langm dlich isotherm models were employed to discuss the adsorption behavior. The results indicated that the data were perfectly represented by uir, Freun- equilibrium Langmuir, Freundlich isotherm. The adsorption kinetics followed pseudo-second- order kinetic equation. The study implied that the persimmon leaf was a promising candidate for the removal of MB from aqueous solution.

关 键 词：柿叶 亚甲基蓝 吸附 等温线 动力学 

分 类 号：X703.1[环境科学与工程—环境工程]