Oxidation of sulfite and thiosulfate anions on a porous carbon fiber anode

Author

Belobaba, A.G. ; Sukhorukov, D.V. ; Masliy, A.I.

Author_Institution

Inst. of Solid State Chem. & Mechanochemistrv, SB RAS, Novosibirsk

fYear

2008

fDate

23-29 June 2008

Firstpage

620

Lastpage

622

Abstract

Anode stability of carbon felt VNG-30 and the kinetics of the anode oxidation of sodium sulfite and thiosulfate solutions (initial concentration: 10 g/l) on this material under different electrolysis conditions are investigated. It is established that BNG-30 is rather stable at the anode polarization up to ap1.8 V and can be used for the anode oxidation of sulfite and thiosulfate. Oxidation rate increases with an increase in the anode polarization and especially noticeably with a decrease in the concentration of ions under oxidation. It is shown that the addition of KBr (up to 10 g/l) causes a noticeable acceleration of sulfite oxidation and has only a weak effect on the process of thiosulfate oxidation.

Keywords

anodes; carbon fibres; electrolysis; oxidation; porous materials; reaction kinetics; sodium compounds; surface chemistry; C; Na₂SO₃; Na₂SO₄; anode polarization; anode stability; carbon felt VNG-30; electrolysis; oxidation; porous carbon fiber anode; sodium sulfite solution; sodium thiosulfate solution; sulfite anions; thiosulfate anions; Anodes; Carbon dioxide; Cathodes; Electrochemical processes; Electrodes; Optical fiber polarization; Optical fiber testing; Organic materials; Oxidation; Silver;

fLanguage

English

Publisher

ieee

Conference_Titel

Strategic Technologies, 2008. IFOST 2008. Third International Forum on

Conference_Location

Novosibirsk-Tomsk

Print_ISBN

978-1-4244-2319-4

Electronic_ISBN

978-1-4244-2320-0

Type

conf

DOI

10.1109/IFOST.2008.4602952

Filename

4602952