摘要
通过静态实验研究了活性氧化铝对水中As（V）的吸附性能,分析了吸附As（V）动力学、吸附等温线以及不同pH和溶液中共存离子的影响.结果表明：活性氧化铝吸附As（V）的最佳pH为4~6,在pH为5.5左右的时候达到最大去除率99%;受氟离子、碳酸根离子和磷酸根离子影响较大,硝酸根和硫酸根基本无影响,而氯离子有促进吸附的效果;可用Langmuir吸附等温线很好地拟合,属于单分子层吸附,最大吸附量为15.7mg/g;其动力学符合Lagergren二级动力学模型.
Through a captive test on the adsorption properties of activated aluminum oxide to As（V）,the adsorption kinetics,adsorption isotherm,influencing factors of pH and coexistence ions are studied in the paper.The results show that the activated aluminum oxide adsorption of As（V）,the optimum pH is 4~6,when the pH reaches about 5.5,the maximum removal efficiency of 99%.The adsorption effect by F-,CO2-3,PO2-3 impact,NO-3 and SO2-4 essentially give no effect to adsorption,while the Cl-have the effect of promoting the adsorption.The Langmuir adsorption isotherm proves to be good in fit,as belongs to the monolayer adsorption with the maximum adsorption capacity of 15.7mg/g;dynamics meets Lagergren second-order kinetic model.
出处
《青岛理工大学学报》
CAS
2014年第1期84-88,共5页
Journal of Qingdao University of Technology
基金
国家自然科学基金资助项目(51008164)
山东省中青年科学家奖励基金资助项目(2010BSE09015)
青岛市应用基础研究项目(11-2-4-4-(5)-gch)
