Guo Wenjuan, Xia Tingcheng, Pei Meishan, Du Yankai, Wang Luyan
Institute of Surface Analysis and Chemical Biology, University of Jinan, Jinan 250022, China.
Shandong Labor Vocational and Technical College, Jinan 250022, China.
Polymers (Basel). 2019 Mar 15;11(3):502. doi: 10.3390/polym11030502.
The main object of this work is to remove Amido black 10B using a new type of bentonite-based adsorbent with cationic groups by the modification of polyallyl amines between the interlayers of bentonite. Fourier transform infrared, X-ray diffraction, thermogravimetric analysis, and scanning electron microscopy were used to characterize the functionalized bentonite. A series of batch adsorption experiments were performed. The maximum adsorption amount was 144.08 mg g when the pH was 2 and the contact time was 120 min. In addition, the equilibrium isotherm data were analyzed using Langmuir and Freundlich isotherm models, while only the Langmuir model could provide a high correlation. Therefore, this study provided a new functionalized bentonite as a low-cost adsorbent for dye removal from water.
本工作的主要目的是通过在膨润土夹层间改性聚烯丙基胺，使用一种新型的带有阳离子基团的膨润土基吸附剂去除氨基黑10B。采用傅里叶变换红外光谱、X射线衍射、热重分析和扫描电子显微镜对功能化膨润土进行表征。进行了一系列的批量吸附实验。当pH值为2且接触时间为120分钟时，最大吸附量为144.08 mg/g。此外，使用朗缪尔和弗伦德利希等温线模型对平衡等温线数据进行分析，而只有朗缪尔模型能提供较高的相关性。因此，本研究提供了一种新型功能化膨润土作为低成本吸附剂用于从水中去除染料。
