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Citation: CAI Bang-Hong, PAN Hai-Yan, FENG Da-Ying. Degradation Kinetics of Dye SF Blue in UV/H₂O₂ System[J]. Chinese Journal of Applied Chemistry, ;2010, 27(5): 544-548. doi: 10.3724/SP.J.1095.2010.90348 shu

Degradation Kinetics of Dye SF Blue in UV/H₂O₂ System

School of Chemistry and Environment, Jiaying University, Meizhou 514015

Received Date: 18 May 2009
Revised Date: 2 August 2009

The degradation efficiency,influencing factors and kinetics of SF Blue dye in UV/H₂O₂ system were investigated.The results show that UV/H₂O₂ has a high activity on the dye degradation.The degradation ratio at 60 min is 98% for the system containing 0.5 mL 5% H₂O₂ in 150 mL 100 mg/L dye solution.The photodecomposition reaction of the dye is accompanied with photooxidative degradation.The results also show that the photooxidative degradation of the dye in UV/H₂O₂ system is a first-order reaction with an activation energy of 5.17 kJ/mol and a pre-exponential factor of 0.168 min^-1 the photodecomposition of the dye in UV system is also a first-order reaction with an activation energy of 16.9 kJ/mol and a pre-exponential factor of 1.04 min^-1. In addition,the best degradation efficiency of the dye could be achieved under a strong alkaline condition with initial pH of the dye solution around 12.
- hydrogen peroxide,
- photodegradation,
- SF Blue,
- reaction rate constant,
- activation energy
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Degradation Kinetics of Dye SF Blue in UV/H₂O₂ System