酚羟基修饰吸附树脂对2-萘酚的吸附性能研究  

Research on Adsorption Properties of 2-Naphthol by Resin Modified with Phenolic Hydroxyl Group

作　　者：袁应霞[1] 孟冠华[1] 刘宝河[1] 吴玉玲[1] 

机构地区：[1]安徽工业大学建筑工程学院,安徽马鞍山243032

出　　处：《安徽工业大学学报（自然科学版）》2013年第3期255-260,共6页Journal of Anhui University of Technology（Natural Science）

基　　金：国家自然科学青年基金(51108001);安徽省教育厅基金(KJ2011A050)

摘　　要：利用化学修饰法合成酚羟基修饰吸附树脂LM-6,通过批量吸附实验考察LM-6对2-萘酚的吸附热力学及动力学行为。结果表明,在实验条件下,LM-6对2-萘酚的吸附数据符合Freundlich吸附等温方程且为优惠吸附,吸附能力随着温度的升高而增加。吸附自由能变G<0,表明吸附过程是自发的过程;S<0,表明吸附过程中熵增加。吸附平衡时间为10 h,吸附动力学数据符合拟二级动力学方程和颗粒内扩散模型。Resin modified with the phenolic hydroxyl group was prepared to study adsorption properties of 2-naphthol from aqueous solution. The thermodynamic and kinetic adsorption behaviors were investigated through batch adsorption experiments. The results show： LM-6 adsorption of 2-naphthol fit Freundlich equation very well and the adsorption process was favorable ones, while adsorption capacities increased with the increase of temperature. ΔG 〈 0 implied that the adsorption process is spontaneous, and ΔS 〉 0 indicated that the entropy increased during the adsorption process. From the kinetic adsorption experiment, the adsorption equilibrium reached in 10 h and the adsorption process obeyed pseudo-second-order adsorption model and intra-particle diffusion model very well.

关 键 词：吸附树脂 2-萘酚 吸附等温线 吸附动力学 

分 类 号：X703.1[环境科学与工程—环境工程]