摘要
采用阳离子表面活性剂十六烷基三甲基溴化铵(CTAB)改性石墨,对环境污染物2,4-二氯苯酚(2,4-DCP)进行吸附性能研究。实验考察了p H、吸附时间对吸附量的影响,研究了改性石墨对2,4-DCP的吸附行为和机理。结果表明:改性石墨对2,4-DCP具有良好的吸附效果,最大吸附量达到54.73mg/g,吸附较好地满足Freundlich等温方程。动力学研究表明:在45min内能达到吸附平衡,准二级动力学模型较好地描述该吸附行为。
The adsorption properties of 2,4-dichlorophenol（ 2,4-DCP） of environmental pollutants were studied by using cationic surfactant cetyltrimethyl ammonium bromide（ CTAB） modified graphite.The effects of p H and adsorption time were investigated,and the adsorption behavior and mechanism of modified graphite to 2,4-DCP was studied.The results showed that the adsorption of 2,4-DCP by modified graphite was good and the equilibrium adsorption capacity reached 54.73 mg/g.The adsorption of 2,4-DCP by modified graphite satisfied the Freundlich isothermal equation better,and the adsorption process reached equilibrium within45 min.The adsorption kinetic curves of 2,4-DCP on modified graphite were shown to follow a pseudo-second-order rate.
出处
《钦州学院学报》
2018年第5期12-15,共4页
Journal of Qinzhou University
