摘要：

以传统活性炭（木质炭、煤质炭）与碳纳米管为碳基吸附剂，研究不同碳基吸附剂对Cr（Ⅵ）的吸附效果，并对其吸附动力学进行研究。结果表明，传统活性炭对Cr（Ⅵ）的吸附性能优于碳纳米管，木质、煤质活性炭和碳纳米管对Cr（Ⅵ）的理论最大吸附量分别为158.23、152.44、48.69 mg/g；传统活性炭和碳纳米管对Cr（Ⅵ）的吸附过程均符合准二级动力学方程；传统活性炭和碳纳米管对Cr（Ⅵ）的吸附属于物理吸附。

关键词: 活性炭, 碳纳米管, 吸附, Cr（Ⅵ）

Abstract:

Using traditional activated carbon(wooden activated carbon and coal activated carbon) and carbon nanotubes as carbon-based adsorbents,the adsorption effects of different carbon-based adsorbents on Cr(Ⅵ) have been researched,and their adsorption kinetics researched as well. The results show that the adsorption capacity of traditional activated carbon on Cr(Ⅵ) is better than that of carbon nano-tubes. The theoretical maximum adsorption capacities of wooden activated carbon,coal activated carbon and carbon nano-tubes for Cr(Ⅵ) are 158.23,152.44, 48.69 mg/g,respectively. The adsorption process of Cr(Ⅵ) by traditional activated carbon and carbon nano-tubes complies with the pseudo-second-order rate kinetics equation,and the adsorption of Cr(Ⅵ) by traditional activated carbon and carbon nano-tubes is physical adsorption.

Key words: activated carbon, carbon nano-tubes, adsorption, Cr(Ⅵ)

中图分类号: 

• X703

• O647.33