蛭石对罗丹明6G的吸附特性研究  

Research on the Adsorption of Rhodamine 6G by Vermiculite

作　　者：滕建亮[1] 徐景华[1] 

机构地区：[1]绍兴文理学院化学化工学院,浙江绍兴312000

出　　处：《广东化工》2010年第3期81-82,共2页Guangdong Chemical Industry

摘　　要：研究了蛭石吸附水中罗丹明6G的性能及适宜条件,并初步探讨了其吸附机理。结果表明:蛭石对罗丹明6G的去除率可达92%,吸附等温线符合Langmuir方程,吸附机理主要是离子交换吸附。蛭石对罗丹明6G的吸附动力学符合二级吸附速率方程。吸附速率由颗粒内扩散和颗粒外扩散联合控制。In the paper, the performance and the suitable condition of the adsorption of Rhodamine 6G by vermiculite were studied, and its underlying mechanisms were discussed. The results showed that： the Rhodamine 6G removal rate was over 92 %; the adsorption isotherms were in accordance with Langmuir equation; the adsorption was mainly ion-exchange. The study on adsorption kinetics suggested that the adsorption followed the second-order equation. The adsorption rate was controlled by both intra-particle diffusion and outer-particle diffusion.

关 键 词：吸附 蛭石 罗丹明6G 

分 类 号：O657.3[理学—分析化学]