凹凸棒石黏土的改性及对甲基橙和亚甲基蓝的吸附性能研究  

Modification of attapulgite clay and study on its adsorption properties for methyl orange and methylene blue

作　　者：郝凤霞[1,2] 高霞飞 Hao Fengxia;Gao Xiafei(State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering,Ningxia University,Yinchuan 750021,China;College of Chemistry&Chemical Engineering,Ningxia University,Yinchuan 750021,China)

机构地区：[1]宁夏大学省部共建煤炭高效利用与绿色化工国家重点实验室,宁夏银川750021 [2]宁夏大学化学化工学院,宁夏银川750021

出　　处：《能源与环保》2025年第2期70-74,共5页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：国家自然科学基金资助项目(21567022)。

摘　　要：以凹凸棒石黏土为原料,采用盐酸和十六烷基三甲基溴化铵(CTAB)进行改性,利用扫描电镜(SEM)、X射线衍射(XRD)、傅里叶红外光谱(FTIR)和物理吸附仪(BET)对改性凹凸棒石的结构进行系统表征,并用于染料废水中亚甲基蓝和甲基橙的吸附。研究表明,2种改性凹凸棒石对染料的吸附过程均符合Langmuir吸附模型,酸改性凹凸棒石后比表面积显著增大,对亚甲基蓝的最大吸附量为53.76 mg/g;CTAB改性凹凸棒对甲基橙的最大吸附量为55.86 mg/g,且2种吸附过程都符合准二级动力学模型。Using attapulgite clay as raw material,hydrochloric acid and hexadecyltrimethylammonium bromide(CTAB)were used for modification.the structures of the modified attapulgite were systematically characterized by scanning electron microscope(SEM),X-ray diffraction(XRD),fourier transform infrared spectroscopy(FTIR),and Brunauer-Emmet-Teller(BET),and used for the adsorption of methylene blue and methyl orange in dye wastewater.The adsorption of methylene blue and methyl orange in dye wastewater was studied by modified attapulgite.The results showed that the adsorption processes of the two kinds of modified attapulgite conformed to the Langmuir adsorption model.The specific surface area of attapulgite modified with hydrochloric acid increased significantly,and the maximum adsorption capacity of methylene blue was 53.76 mg/g.The maximum adsorption capacity of methyl orange by attapulgite modified with CTAB was 55.86 mg/g,and the adsorption processe was consistent with the quasi-second-order kinetic mode.

关 键 词：改性凹凸棒石 亚甲基蓝 甲基橙 吸附 

分 类 号：TS199[轻工技术与工程—纺织化学与染整工程]