摘要
研究了碳纳米管电极电吸附苦咸水脱盐.对碳纳米管的预处理、电极炭化、碳纳米管孔径以及不同操作条件,包括不同电压、初始浓度、水通量和电极片数等对脱盐的影响进行了一系列的测试与分析,结果表明:预处理使电极脱盐性能大为提高;炭化将加强电极片的强度,碳纳米管电极的最佳脱盐孔径为2～10 nm;并且这种新型脱盐器最佳脱盐的电压和水通量分别为2.0 V和10 ml/min.在此最佳条件下,盐水的浓度越高,脱盐效果越好;并且电极片越多,脱盐性能越好.同时文中也对脱盐器循环寿命进行了测试,结果表明:这种新型脱盐器脱盐效率高、循环周期长.
This paper discusses desalination techniques of carbon nanotube electrodes by electric adsorption. Pre-treatment of carbon nanotubes, carbonization of carbon nanotube electrodes and aperture of carbon nanotubes axe studied. Measurement and analysis under different conditions of voltage, initial salt intensity, water current, and number of electrodes suggest that desalination performance is improved after pre-treament, carbonization can strengthen intensity of electrodes, the best aperture of carbon nanotubes to desalt the brackish water is 2 ~ 10 nm, and the best work condition is 2.0 V in voltage and 10 ml/min in water current. This new kind of desalinator, under the best work condition, offers a new way to desalt high salt water for higher salt concentration, higher ratio of desalination, more pieces of carbon nanotube electrodes, and better efficiency of desalination. Test of circle life indicates that the described desalinator not only has effective desalination but also a long cycle period.
出处
《应用科学学报》
CAS
CSCD
北大核心
2005年第5期539-544,共6页
Journal of Applied Sciences
基金
国家"863"高技术研究发展计划(2002AA302302)
上海市科委纳米专项(0215nm001)资助项目
关键词
苦咸水
脱盐
碳纳米管
brackish water
desalination
carbon nanotube
