用于吸附染料废水中水溶性染料的环糊精基丙烯酰胺聚合物絮凝剂的合成与表征
Synthesis and characterization of cyclodextrin-based acrylamide polymer flocculant for adsorbing water-soluble dyes in dye wastewater.
作者信息
Su Qiong, Wang Yuxing, Sun Wanhong, Liang Junxi, Meng Shujuan, Wang Yanbin, Li Zhenhua
机构信息
College of Chemical Engineering, Northwest Minzu University, Lanzhou 730030, People's Republic of China.
Key Laboratory of Environmental Friendly Composite Materials and Biomass Utility in Universities of Gansu Province, Northwest Minzu University, Lanzhou 730030, People's Republic of China.
出版信息
R Soc Open Sci. 2020 Jan 22;7(1):191519. doi: 10.1098/rsos.191519. eCollection 2020 Jan.
A novel hydrophobic and cationic cyclodextrin-based acrylamide flocculant (AM-β-CD-DMDAAC) was prepared by chemical oxidative polymerization to adsorb water-soluble dyes in dye wastewater. Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscope and thermogravimetric (TG) measurements results demonstrated that the AM-β-CD-DMDAAC was successfully synthesized. The effects of pH, contact time, initial dye concentration, temperature and adsorbent dose on dye removal efficiency for AM-β-CD-DMDAAC flocculants were investigated. The kinetic data were found to follow the pseudo-second-order kinetic model. The equilibrium adsorption data were fitted to the Langmuir isotherm model, with the maximum adsorption capacity of 147.1 mg g. The adsorbent retained about 60% of the adsorption efficiency after three adsorption/desorption cycles, which implied a promising application as the dye adsorbent.
通过化学氧化聚合法制备了一种新型的基于疏水阳离子环糊精的丙烯酰胺絮凝剂（AM-β-CD-DMDAAC），用于吸附染料废水中的水溶性染料。傅里叶变换红外光谱、X射线衍射、扫描电子显微镜和热重（TG）测量结果表明，AM-β-CD-DMDAAC已成功合成。研究了pH值、接触时间、初始染料浓度、温度和吸附剂用量对AM-β-CD-DMDAAC絮凝剂去除染料效率的影响。动力学数据符合准二级动力学模型。平衡吸附数据拟合到Langmuir等温线模型，最大吸附容量为147.1 mg/g。经过三次吸附/解吸循环后，吸附剂仍保留约60%的吸附效率，这意味着其作为染料吸附剂具有广阔的应用前景。
Zotero 插件