Ultrasonic degradation of reactive brilliant red K-2BP in water with CCl₄ enhancement: Performance optimization and degradation mechanism

The ultrasonic degradation of reactive brilliant red K-2BP (K-2BP) in water with CCl₄ enhancement was investigated. The effects of operating parameters, such as CCl₄ dosage, ultrasonic power, media temperature, dye initial concentration, and initial media pH on K-2BP degradation were discussed. The...

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Bibliographic Details
Published in:Separation and purification technology 2011-09, Vol.81 (1), p.69-76
Main Authors: Wang, Xi-Kui, Wei, Yue-Chang, Wang, Chen, Guo, Wei-Lin, Wang, Jin-Gang, Jiang, Jie-Xiao
Format: Article
Language:English
Subjects:
Carbon tetrachloride
Degradation
free radicals
gas chromatography
hydrogen
Hydrogen atoms
ion exchange chromatography
mass spectrometry
Media
Optimization
Purification
Radicals
Scavengers
temperature
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Summary:The ultrasonic degradation of reactive brilliant red K-2BP (K-2BP) in water with CCl₄ enhancement was investigated. The effects of operating parameters, such as CCl₄ dosage, ultrasonic power, media temperature, dye initial concentration, and initial media pH on K-2BP degradation were discussed. The ultrasonic degradation of K-2BP was obviously enhanced by CCl₄ addition – an effect attributed to the increased OH radical concentration in the presence of CCl₄ as a hydrogen atom scavenger, and the formation of chlorine-containing radicals. The main degradation products of K-2BP were tentatively identified by GC–MS and ion chromatography. A possible degradation pathway for K-2BP was also proposed.
ISSN:1383-5866
1873-3794
DOI:10.1016/j.seppur.2011.07.003