有机改性凹凸棒石吸附活性艳蓝KN-R的动力学研究  

Kinetics of Adsorption of Reactive Brilliant Blue KN-R onto Organic Modified Attapulgite

作　　者：张波[1] 彭书传[2] 王世亮[1] 张泽滨[3] 吴敏伟[1] 

机构地区：[1]安徽职业技术学院化学工程系,合肥230051 [2]合肥工业大学资源与环境学院,合肥230009 [3]煤炭工业合肥设计研究院,合肥230041

出　　处：《材料导报》2013年第4期122-125,142,共5页Materials Reports

基　　金：安徽省高等学校优秀青年人才基金(2012SQRL246);国家自然科学基金(40672027)

摘　　要：通过静态吸附实验方法,研究了有机改性凹凸棒石吸附活性艳蓝KN-R的动力学行为。研究结果表明:准二级动力学模型能很好地描述活性艳蓝KN-R在有机改性凹凸棒石上的动力学行为,平衡吸附量q2随着KN-R初始浓度、振荡速度、温度的增加而增加。有机改性凹凸棒石吸附活性艳蓝KN-R主要是外表面吸附,吸附活化能为39.2kJ/mol,说明其为物理吸附、化学吸附综合作用的过程,其速率由化学过程与外扩散共同控制。By static adsorption experiments, the adsorption dynamics of organic modified attapulgite on reactive brilliant blue KN-R was studied. The results indicate that the adsorption of KN-R by organic modified attapulgite fol lows the pseudo second order kinetic model. The amount of KN-R adsorbed at equilibrium（q2 ） increases with the in creasing of initial mass concentration for KN-R, agitation speed and temperature. The results also show that KN-R is mainly adsorbed on the external surface of organic modified attapulgite, the adsorption activation energy is 39.2 kJ/ mol. It means that the adsorption is a process combinated by physical and chemical adsorption, and the adsorption rate is controlled by not only chemical adsorption but also physical adsorption.

关 键 词：有机改性 凹凸棒 吸附 活性艳蓝KN-R 动力学 

分 类 号：X703[环境科学与工程—环境工程]