Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 22, Issue 14, Pages 11170-11174Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-015-4774-2
Keywords
Microelectrode; Ferrocene; Hydrogen peroxide; Heterogeneous Fenton; Ultrasonic treatment
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Funding
- Zhejiang Province Welfare Technology Applied Research Project [2014C31137]
- 151 Talent Project of Zhejiang Province [12-2-008]
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Microelectrodes were used for real-time detection of hydrogen peroxide (H2O2) in a heterogeneous sono-Fenton system with ferrocene as the catalyst. The working mechanism of reactive blue 13 decolorization in a heterogeneous sono-Fenton system was investigated. Ultrasonic irradiation showed no effect on decolorization when used alone and did not enhance decolorization in the H2O2 system (43.0 % for H2O2 vs. 48.1 % for US+H2O2). However, a system with the presence of Fenton-like reagents achieved complete decolorization. Decolorization was greatly accelerated by the addition of ultrasonic irradiation. Thorough decolorization was achieved in 20 min in the heterogeneous sono-Fenton system, which was 30 min faster than in the heterogeneous Fenton system. Based on the data collected by microelectrodes, accelerated decomposition of H2O2 was also observed. Ultrasonic irradiation aided the ferrocene catalyst in liberating more aEuro cent OH from Fenton reactions, leading to the faster decolorization.
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