中文

Journal of Applied Sciences ›› 2005, Vol. 23 ›› Issue (5): 539-544.

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Desalination Techniques of Carbon Nanotube Electrodes by Electric Adsorption

DAI Kai1,2, SHI Li-yi1,2,3, FANG Jian-hui1, ZHANG Deng-song1, YU Bing-kun1   

  1. 1. College of Science, Shanghai University, Shanghai 200444, China;
    2. School of Material Science and Engineering, Shanghai University, Shanghai 200444, China;
    3. Nano-Science and Technology Center, Shanghai University, Shanghai 200444, China
  • Received:2004-06-10 Revised:2004-09-24 Online:2005-09-30 Published:2005-09-30

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Abstract: 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 are 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.

Key words: carbon nanotube, brackish water, desalination

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