铝镁氢氧化物溶胶吸附脱色性能的研究  

STUDY ON ADSORPTION AND DECOLORIZATION CAPABILITIES OF ALUMINUM-MAGNESIUM HYDROXIDE SOL

作　　者：李玉江[1] 隗娜[1] 吴涛[1] 曹楠[1] 毕研俊[1] 

机构地区：[1]山东大学环境科学与工程学院,济南250100

出　　处：《环境化学》2005年第2期179-182,共4页Environmental Chemistry

基　　金：山东大学青年科学基金资助课题

摘　　要：对染料在具有永久正电荷的铝镁氢氧化物上的吸附,考察了铝镁比、染料类型、pH值等因素对吸附效果的影响,并进行了动力学、热力学研究结果表明,铝镁氢氧化物溶胶具有良好的脱色效果,铝镁比为1∶3的溶胶处理效果最佳;溶胶对大多数阴离子型染料的脱色率明显大于其它类型;染料的吸附量随pH值的增大而减小;溶胶对实验的各种阴离子型染料的饱和吸附量在961—3319mg·g-1之间;吸附量随温度升高而减小。The adsorption of dyes on aluminum-magnesium hydroxide sol possessing permanent positive charges and effects of the molar ratio of Al/ Mg in mixed solution, the types of dyes, pH were studied.Aluminum-~magnesium hydroxide sol was found to be effective at removing dyes.The molar ratio of Al/ Mg in mixed solution ~1∶3 was the most effective.With the increase of pH, the adsorption of dyes decreased.Aluminum-magnesium hydroxide sol demonstrated a propensity to remove anionic dyes.The saturated adsorption of anionic dyes in test were 961—3319 mg·g^-1 .The increase of temperature may reduce the adsorption of dyes, which indicates that the adsorption processes studied are exothermic.

关 键 词：溶胶 阴离子型 氢氧化物 染料 研究 pH值 饱和吸附量 脱色率 吸附脱色 脱色效果 

分 类 号：X791[环境科学与工程—环境工程]