碳纳米管吸附染料茜素红的性能研究  

A Study on the Adsorption of Alizarin Red from Aqueous Solution by Carbon Nanotubes

作　　者：张春丽[1] 任广军[1] 王昕[1] 宋恩军[1] 

机构地区：[1]沈阳理工大学环境与化学工程学院,沈阳110168

出　　处：《染料与染色》2007年第4期47-49,共3页Dyestuffs and Coloration

摘　　要：研究了碳纳米管对水中茜素红的吸附去除性能,结果表明:纯化的碳纳米管对水中茜素红的去除效果明显高于未纯化的碳纳米管,当其用量为0.1g时,纯化的碳纳米管对水中茜素红的吸附去除率达到87.3%;纯化的碳纳米管对水中茜素红的吸附在60分钟达到平衡;溶液pH值对水中茜素红的去除有一定的影响,在酸性和中性条件下的去除率大于碱性;温度升高,水中茜素红的去除率略有升高。平衡吸附量qe与平衡质量浓度pe之间的关系符合Freundlich和Langmuir等温吸附方程所描述的规律。The removing effect of carbon nanotubes on alizarin red from aqueous solution was studied, the result showed that the adsorption behavior of purified carbon nanotubes on alizarin red was much better than raw carbon nanotubes. While dropping 0. 1 g,87.3% of alizarin red was adsorbed. The adsorption of alizarin red reached balance 60 minutes later. Temperature and pH have a little effect on the removal of alizarin red. There is a little better removal in acid and pH = 7 condition than alkaline condition. Higher temperature is also useful for removal. The relationship between adsorbing capacity （ qe ） and equilibrium mass concentration （ Pe ） is in accordance with the isothermal adsorption equations of Freundlich and Langmuir.

关 键 词：碳纳米管 纯化 吸附 茜素红 等温线 

分 类 号：X79[环境科学与工程—环境工程]