摘要
通过简单的水溶液聚合法成功合成了聚丙烯酸钠-硅溶胶复合吸附剂,并对其进行了SEM和热重分析,研究了吸附条件对该吸附剂对阳离子金黄染料吸附效果的影响。实验结果表明,当硅溶胶质量分数为20%、初始染料质量浓度为60 mg/L、初始溶液pH为7、反应温度为298 K时,聚丙烯酸钠-硅溶胶复合吸附剂对阳离子金黄染料的吸附量为64.64 mg/g。由二级吸附动力学模型获得的活化能(Ea=2.617 kJ/mol)表明,聚丙烯酸钠-硅溶胶复合材料对阳离子金黄的吸附属于物理吸附,低温有利于吸附。
The sodium polyacrylate-silicasol composite adsorbent was successfully synthesized by aqueous solution polymerization method and determined by SEM and TGA.The factors affecting the adsorption of cationic gold yellow dye on the adsorbent were studied.When the mass fraction of silicasol is 20 %,the initial mass concentration of dye is 60 mg/L,the solution pH is 7 and the reaction temperature is 298 K,the adsorption capacity of the adsorbent for cationic gold yellow is 64.64 mg/g.According to the second order adsorption kinetics model,the activation energy is 2.617 kJ/mol.It indicates that the adsorption of cationic gold yellow on the adsorbent belongs to physical adsorption and lower temperature is favorable to it.
出处
《化工环保》
CAS
CSCD
北大核心
2012年第2期185-188,共4页
Environmental Protection of Chemical Industry
关键词
聚丙烯酸钠
硅溶胶
阳离子金黄
吸附
废水处理
sodium polyacrylate
silicasol
cationic gold yellow
adsorption
wastewater treatment
