蒋德敏,方荣美,陈建钧,邓茂君,王大才

• 1:重庆三峡学院三峡库区水环境演变与污染防治重庆高校市级重点实验室
• 2:四川大学化学工程学院
• 3:重庆市万州区生态环境监测站

摘要(Abstract)：

为提高冶金废水中镁离子回收萃取效率,缩短萃取时间,实现连续进料萃取工艺。采用超声辅助二壬基萘磺酸萃取冶金废水中的镁离子,分别考察了二壬基萘磺酸浓度、超声变幅杆浸入液面深度、萃取时间、超声器功率和有机相与水相体积比(相比)等因素对镁离子萃取率的影响。结果表明,超声辅助萃取的萃取速度是传统萃取方法的20倍,节约了大量萃取时间。最佳工艺条件为:25℃,萃取剂浓度0.8 mol×L~(-1),变幅杆浸入深度5 mm,超声萃取时间2 min,超声萃取功率108 W,相比3:1。紫外分析结果表明超声作用不会破坏萃取剂的结构与性能,萃取剂能够再生后重复利用。因此,与传统间歇萃取法相比,该工艺将更利于实现连续进料萃取,从而提高生产效率。

关键词(KeyWords)： 超声;萃取;二壬基萘磺酸;镁

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(21076131);; 四川省科技支撑计划(2014GZ0076);; 重庆市教委科技项目(KJ1710245);; 重庆三峡学院青年项目(16QN20);重庆三峡学院大学生创新实验

作者(Author): 蒋德敏,方荣美,陈建钧,邓茂君,王大才

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