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.
出处
《化工环保》
CAS
CSCD
北大核心
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)
关键词
钠基蒙脱土
亚甲基蓝
吸附
解吸
废水处理
Na-montmorillonite
methylene blue
adsorption
desorption
wastewater treatment
