摘要
采用批量吸附实验,研究了活性炭对水中罗丹明B的吸附行为,探讨了活性炭用量、吸附时间对水中罗丹明B吸附的影响,并对活性炭再生效果进行了测定.结果表明,利用活性炭处理罗丹明B,具有处理效果好、再生容易等特点.运用Langmuir等温吸附方程对其吸附进行了描述,表明吸附属于化学吸附;用准二级吸附动力学方程和准一级吸附动力学方程对实验数据进行了回归分析,准二级吸附动力学方程能更好地描述罗丹明B在活性炭上的吸附.
The adsorption of Rhodamine-B from aqueous solutions on activated carbon was investigated in a batch-adsorption experiments. The influences of quantity of activated carbon, adsorption time on the adsorption effect of Rhodamine-B were observed, and the effectiveness of regenerated activated carbon was assayed. The results revealed that activated carbon was a promising sorbent for the removal of Rhodamine-B from aqueous solutions, and its regeneration procedure is simple and efficient. The adsorption mechanism was discussed based on Langmuir isotherm. It is proved that the adsorption is ehemisorption. The pseudo-second-order kinetic and pseudo-first-order kinetic equations have been used to test experimental data, pseudo-second-order kinetic equation provided the best fit.
出处
《陕西科技大学学报（自然科学版）》
2008年第6期95-98,共4页
Journal of Shaanxi University of Science & Technology
关键词
活性炭
吸附
罗丹明B
activated carbon
adsorption
Rhodamine-B
