改性煤矸石的制备及其对染料的吸附研究  

Study on Preparation of Modified Coal Gangue and ItsAdsorption Behavior of Dyes

作　　者：李冬[1] 陈华军[1] 

机构地区：[1]洛阳理工学院环境工程与化学系,河南洛阳471023

出　　处：《非金属矿》2013年第3期79-81,共3页Non-Metallic Mines

摘　　要：根据煤矸石的化学特性及矿物特性,分析了煤矸石的改性过程,通过实验确定了煤矸石的改性方法。改性煤矸石由于矿物成分的负电性,对罗丹明B的吸附效果优于酸性红G。改性煤矸石对罗丹明B和酸性红G的吸附采用Henry等温吸附方程、Langmuir等温吸附方程、Freundlich等温吸附方程和Temkin等温吸附方程进行回归分析,结果表明,2种染料均最符合Langmuir等温吸附,吸附属于单分子层吸附。The modification process of coal gangue was analysed according to the chemical and mineral characteristics and modification methods was determined by the experiment. The adsorption effect of rhodamine B is better than the acid red G due to the electronegative of the mineral composition. The adsorption mechanism of rhodamine B and acid red G from aqueous solutions on modified coal gangue was discussed based on Henry isotherm, Langrnuir isotherm, Freundlich isotherm and Temkin isotherm. Langmuir isotherm was provided the best fit. It is proved the adsorption is monomolecular layer adsorption.

关 键 词：改性煤矸石 吸附 罗丹明B 酸性红G 等温吸附 

分 类 号：X703[环境科学与工程—环境工程]