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引用次数: 4
摘要
本文报道了聚丙烯酰胺(PAA)作为吸附剂对亚甲基蓝(MB)染料的脱除效果。采用SEM和FTIR对PAA进行了表征。间歇吸附实验以溶液pH、接触时间、溶质浓度和温度为函数进行。等温线实验结果表明，吸附过程与Langmuir模型吻合较好。吸附剂对MB的最大吸附容量为111.1 mg g ´1。对各种动力学模型进行了动力学研究，拟二级动力学模型与实验数据拟合较好。热力学参数表明，吸附反应为吸热自发过程。
Application of Polyacrylamide for Methylene Blue Removal from Aqueous Solutions
In this study the removal of methylene blue (MB) dye from aqueous solutions by polyacrylamide (PAA) as a potential adsorbent was reported. PAA was characterized using SEM and FTIR measurements. Batch adsorption experiments were performed as a function of the solution pH, contact time, solute concentration and temperature. Evaluation of the obtained data with isotherm studies indicated that the adsorption process was matched well with the Langmuir model. The maximum capacity of adsorbent for MB was 111.1 mg g −1 . Kinetic studies were carried out on various kinetic models and the pseudo-second order kinetic model was fitted very well with experimental data. Moreover, the thermodynamic parameters indicated that the adsorption reaction was endothermic and spontaneous process.
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