|
KMID : 1024520090180010061
|
|
Journal of the Environmental Sciences
2009 Volume.18 No. 1 p.61 ~ p.72
|
|
|
A Study on the Preparation of the Dimensionally Stable Anode(DSA) with High Generation Rate of Oxidants(II)
|
|
Park Young-Seek
Kim Dong-Seog
|
|
|
Abstract
|
|
|
|
Fabrication and oxidants production of 3 or 4 components metal oxide electrode, which is known to be so effective to destruct non-biodegradable organics in wastewater, were studied. Five electrode materials (Ru as main component and Pt, Sn, Sb and Gd as minor components) were used for the 3 or 4 components electrode. The metal oxide electrode was prepared by coating the electrode material on the surface of the titanium mesh and then thermal oxidation at for 1h. The removed RhB per 2 min and unit W of 3 components electrode was in the order: Ru:Sn:Sb=9:1:1 > Ru:Pt:Gd=5:5:1 > Ru:Sn=9:1 > Ru:Sn:Gd=9:1:1 > Ru:Sb:Gd=9:1:1. Although RhB decolorization of Ru:Sn:Sb:Gd electrode was the highest among the 4 components electrode, the RhB decolorization and oxidants formation of the Ru:Sn:Sb=9:1:1 electrode was higher than that of the 3 and 4 components electrode. Electrogenerated oxidants (free Cl and ) of chlorine type in 3 and 4 components electrode were higher than other oxidants such as . It was assumed that electrode with high RhB decolorization showed high oxidant generation and COD removal efficiency. OH radical which is electrogenerated by the direct electrolysis was not generated the entire 3 and 4 components electrode, therefore main mechanism of RhB degradation by metal oxide electrode based Ru was considered indirect electrolysis using electrogenerated oxidants.
|
|
|
KEYWORD
|
|
|
Electrochemical oxidation, Dimentionally stable anode, Anode material, Oxidants
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|