碳纳米管吸附染料甲基橙的性能研究

Study on the Adsorption of Methyl Orange From Aqueous Solution by Carbon Nanotubes

研究了碳纳米管对水中甲基橙的吸附去除性能,结果表明:纯化的碳纳米管对水中甲基橙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甲基橙的吸附去除率达到88.5%;纯化的碳纳米管对水中甲基橙的吸附在60min达到平衡;溶液pH值对水中甲基橙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。平衡吸附量qe与平衡质量浓度ρe之间的关系符合Freundlich和Langmuir等温吸附方程所描述的规律。

Studying the removing effect of carbon nanotubes on methyl orange from aqueous solution,the result showed that the adsorption behavior of purified carbon nanotubes on methyl orange was much better than raw carbon nanotubes. While dropping 0.1 g,88.5% of methyl orange was adsorbed. The adsorption of methyl orange reached balance 60 minutes later. Temperature and pH have a little effect on the removal of methyl orange. There is a little better removal in acid and pH=7 condition than alkaline condition. The relationship between adsorbing capacity （qe） and equilibrium mass concentration （pe） is in accordance with the isothermal adsorption equations of Freundlich and Langmuir.