钠基蒙脱土对亚甲基蓝的吸附和解吸研究  

Study on Adsorption and Desorption of Methylene Blue on Na-montmorillonite

作　　者：赵亚红[1] 庞方亮[1] 王丽[1] 王爱勤[2] 

机构地区：[1]内蒙古农业大学材料科学与艺术设计学院,内蒙古呼和浩特010018 [2]中国科学院兰州化学物理研究所,甘肃兰州730000

出　　处：《化工环保》2011年第4期357-360,共4页Environmental Protection of Chemical Industry

基　　金：国家自然科学基金资助项目(20867004);国家林业公益性行业科研专项(201104004)

摘　　要：采用正交实验方法,确定了钠基蒙脱土吸附亚甲基蓝染料的最佳吸附条件。采用试剂再生法、超声波法、高温焙烧法、氢氧化钠-高温焙烧结合法对钠基蒙脱土吸附亚甲基蓝进行解吸。用扫描电子显微镜照片和红外光谱对吸附前后的钠基蒙脱土的结构进行表征。实验结果表明:在亚甲基蓝溶液pH为10、吸附温度为60°C、亚甲基蓝质量浓度为1 300 mg/L、吸附时间为6 h时,钠基蒙脱土对亚甲基蓝的吸附量可高达412 mg/g;氢氧化钠-高温焙烧结合法对钠基蒙脱土的解吸效果最好,但吸附前后,钠基蒙脱土的结构发生明显变化。The optimum conditions for adsorption of methylene blue （MB） onto Na-montmorillonite （Na-MMT） were determined by orthogonal tests. The MB on Na-MMT was desorbed by agent regeneration method, ultrasonic wave method, high temperature calcination method and sodium hydroxide-high temperature calcination method, respectively. The structures of Na-MMT before and after adsorption were characterized by SEM and FT-IR. The experimental results indicate that： When the MB solution pH is 10, the adsorption temperature is 60℃, the MB mass concentration is 1 300 mg/L and the adsorption time is 6 h, the adsorption quantity of MB on Na-MMT is as high as 412 mg/ g; The best method for desorption of Na-MMT is the sodium hydroxide-high temperature calcination method, but the structures of Na-MMT before and after adsorption are changed obviously.

关 键 词：钠基蒙脱土 亚甲基蓝 吸附 解吸 废水处理 

分 类 号：X703.1[环境科学与工程—环境工程]