The electrochemical degradation of Methyl Orange in 0.1 M NaCl solution over RuOx–PdO/Ti anode was investigated. Chemical oxygen demand (COD), ion chromatography (IC), Fourier Transform Infrared Spectroscopy (FTIR) and Gas chromatography-mass spectrometry (GC-MS) were employed to detect the intermediates formed during the electrochemical degradation. In the present reaction system, Methyl Orange could be effectively degraded. After 1 h treatment, the discoloration could reach 97.9% with COD removal of 57.6%. The results indicated that in the presence of chloride, the electrolysis was able to oxidise the dye with partial mineralisation of carbon, nitrogen and sulfur into CO2, NO3− and SO42−, respectively. After 8 h electrolysis, 62% of sulfur contained in Methyl Orange was transformed to SO42−, and 17.6% of nitrogen changed to NO3−. The intermediates during electroprocess were detected to be low molecular weight compounds, chlorinated compounds, derivatives of benzene and long chain alkanes. Based on these data, a possible degradation mechanism of Methyl Orange was proposed.
Skip Nav Destination
Article navigation
Research Article|
April 01 2011
Degradation mechanism of Methyl Orange by electrochemical process on RuOx–PdO/Ti electrode Available to Purchase
Lin Du;
1Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China E-mail: [email protected]; [email protected]; [email protected]
E-mail: [email protected]
Search for other works by this author on:
Jin Wu;
Jin Wu
2Yibin Health School, Yibin, 644000, China E-mail: [email protected]
Search for other works by this author on:
Song Qin;
Song Qin
1Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China E-mail: [email protected]; [email protected]; [email protected]
Search for other works by this author on:
Changwei Hu
Changwei Hu
1Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China E-mail: [email protected]; [email protected]; [email protected]
Search for other works by this author on:
Water Sci Technol (2011) 63 (7): 1539–1545.
Citation
Lin Du, Jin Wu, Song Qin, Changwei Hu; Degradation mechanism of Methyl Orange by electrochemical process on RuOx–PdO/Ti electrode. Water Sci Technol 1 April 2011; 63 (7): 1539–1545. doi: https://doi.org/10.2166/wst.2011.414
Download citation file:
Sign in
Don't already have an account? Register
Client Account
You could not be signed in. Please check your email address / username and password and try again.
Could not validate captcha. Please try again.
eBook
Pay-Per-View Access
$38.00