Alternating pulse current in electrocoagulation for wastewater treatment to prevent the passivation of al electrode

被引：36
作者：
Mao X. [1 ]
Hong S. [1 ]
Zhu H. [1 ]
Lin H. [1 ]
Wei L. [1 ]
Gan F. [1 ,2 ]
机构：
[1] School of Resource and Environmental Science, Wuhan University
[2] State Key Laboratory of Metal Corrosion and Protection, Chinese Academy of Science
来源：
Journal Wuhan University of Technology, Materials Science Edition | 2008年 / 23卷 / 02期
关键词：
Alternating pulse current; Electrocoagulation; Passivation of Al;
D O I：
10.1007/s11595-006-2239-7
中图分类号：
学科分类号：
摘要：
A novel current feed style, alternating pulse current, was proposed in electrocoagulation aiming at preventing the passivation of electrode materials. The open circuit potential (OCP) measurements after anodic and cathodic potentiodynamic polarization showed that cathodic polarization could activate Al electrode. The surface of Al electrode after alternating pulse current electrocoagulation was investigated by scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS), and the results indicate that passivation of Al is not observed. Furthermore, the simulated wastewater treatment tests show that alternating pulse current electrocoagulation has a visible energy saving effect and is worthy of generalization. © 2008 Wuhan University of Technology and Springer-Verlag GmbH.
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页码：239 / 241
页数：2
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