Decoloration of aqueous Brilliant Green by using glow discharge electrolysis.
This paper described a plasma degradation of Brilliant Green (BG) by glow discharge electrolysis. Various influencing factors such as the voltage, the distance between cathode and anode were examined. Ultraviolet (UV) absorption spectra, gas chromatogram-mass spectrum (GC-MS), and chemical oxygen demand (COD) were used to monitor the degradation process and to identify the major oxidation intermediates. It was confirmed that benzoic acid, 1,2,3,4,5,6-cyclohexanehexaol, and carboxylic acids (e.g., oxalic acid, succinic acid and hydroxyacetic acid) were produced in the degradation process. The results showed that BG rapidly underwent degradation and eventually mineralized into CO(2) and H(2)O.
Gao
Jinzhang
J
College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China. jzgao@nwnu.edu.cn
Yu
Jie
J
Li
Yan
Y
He
Xiaoyan
X
Bo
Lili
L
Pu
Lumei
L
Yang
Wu
W
Lu
Quanfang
Q
Yang
Zhiming
Z
D002245:Carbon Dioxide / Q000737:chemistry; D004396:Coloring Agents / Q000032:analysis / Q000737:chemistry; D004563:Electrochemistry; D004566:Electrodes; D004572:Electrolysis / Q000295:instrumentation / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D008956:Models, Chemical; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry; D000644:Quaternary Ammonium Compounds / Q000032:analysis* / Q000737:chemistry; D013997:Time Factors; D014865:Waste Disposal, Fluid; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical; D018508:Water Purification / Q000295:instrumentation / Q000379:methods*
D004396:Coloring Agents; D000644:Quaternary Ammonium Compounds; D014874:Water Pollutants, Chemical; D014867:Water; D002245:Carbon Dioxide; C006798:brilliant green; D010100:Oxygen