夏子街膨润土在碱性染料废水处理中的应用研究  

A study on application of the Xiazijie bentonite in the treatment of basic dye wastewater

作　　者：杨成亮 贺贤举 管俊芳[1] 李银[1] 郑佳敏[1] 郭争争 YANG Cheng-liang;HE Xian-ju;GUAN Jun-fang;LI Yin;ZHENG Jia-min;GUO Zheng-zheng(School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China;Zhengye Longteng New Material Development Co,Ltd,Guiyang 550005,China)

机构地区：[1]武汉理工大学资源与环境工程学院,湖北武汉430070 [2]贵龙正业龙腾新材料开发有限公司,贵州贵阳550005

出　　处：《矿物学报》2021年第2期190-196,共7页Acta Mineralogica Sinica

基　　金：国家重点研发计划(编号:2017YFB0310902)。

摘　　要：以纳基和钙基夏子街膨润土为吸附剂,通过改变吸附时间、吸附剂用量、染料溶液浓度、初始pH值分析其对碱性红46和碱性兰41脱色率的影响,并对其吸附动力学、吸附热力学和吸附机理进行了研究。结果表明,2种膨润土对2种碱性染料废水的最佳脱色条件具有一定差异。准一级动力学模型对膨润土吸附碱性染料废水的过程描述更准确,膨润土对碱性红46的吸附是自发吸热反应,对碱性兰41的吸附是自发放热反应,膨润土对2种碱性染料废水的吸附既有物理吸附也存在离子交换吸附。The sodium-and calcium-based two kinds of the Xiazijie bentonites are used as adsorbents to treat Basic Red 46 and Basic Blue 41 in the dye wastewater.By changing the adsorption time,adsorbent dosage,dyesolution concentration,and initial pH value of the solution,the effects of the sodium-and calcium-based Xiazijie bentonites on the decolorization rates of Basic Red 46 and Basic Blue 41 has been analyzed in this paper.The adsorption kinetics,adsorption thermodynamics,and adsorption mechanism of Basic Red 46 and Basic Blue 41 in the dye wastewater by those bentonites have also been studied.The results show that there are certain differences in the optimal decolorization conditions for the treatment of two kinds of basic dye wastewaters by using the two kinds of bentonites.the quasi-first-order kinetic model has more accurately described the adsorption process of basic dye wastewaters by bentonites.The adsorption of Basic Red 46 by bentonite is a spontaneous endothermic reaction,whereas the adsorption of Basic Blue 41 is a spontaneous exothermic reaction.The adsorption of two kinds of basic dye wastewaters by bentonites has both physical adsorption and ion exchange adsorption.

关 键 词：膨润土 碱性染料 吸附机理 热力学 动力学 

分 类 号：X703[环境科学与工程—环境工程]