纳米磁性有机凹凸棒对废水中活性艳蓝的吸附研究  

Study of reactive brilliant blue in wastewater solution adsorption on nanostructured magnetic organic modified palygorskite

作　　者：张波[1] 李德明[1] 刘书雅 徐灏溪 沈立[2] 

机构地区：[1]安徽职业技术学院化学工程系,合肥230051 [2]河海大学流体力学系,南京210098

出　　处：《化工新型材料》2016年第2期181-183,共3页New Chemical Materials

基　　金：安徽省高等学校优秀青年人才基金项目(2012SQRL246);安徽省高校自然科学研究项目(KJ2015A412);国家自然科学基金项目(40672027)

摘　　要：采用纳米磁性有机改性凹凸棒石对以活性艳蓝配制的印染废水进行了吸附脱色处理,研究了该过程的吸附热力学、动力学机理。结果表明:活性艳蓝在磁性有机改性凹凸棒石上的吸附行为符合Freundlich等温吸附模型,吸附焓变为正值、自由能为负值、熵变为正值,说明该吸附过程是吸热、自发、熵增的;其吸附动力学行为符合准二级动力学模型;活性艳蓝在磁性有机改性凹土上的吸附是物理吸附、化学吸附共同作用的结果。By static adsorption experiments, the thermodynamics and kinetics properties for adsorption of reactive brilliant blue in wastewater solution onto magnetic organic modified palygorskite was studied. The results indicated that the adsorption of the brilliant blue in wastewater solution onto palygorskite obeied freundlich isotherm model. The adsorption enthalpy was positive,free energy absorption was negative and entropy change was positive, which indicated that the absorption process was endothermic,spontaneous and entropy increment. The adsorption kinetics of process obeyed pseudosecond order kinetic model. The process of brilliant blue adsorbing onto palygorskit was the joint result of chemical adsorp- tion and physical adsorption.

关 键 词：吸附 凹凸棒 有机改性 磁性 活性艳蓝KN-R 

分 类 号：TQ424[化学工程] X703[环境科学与工程—环境工程]