Supercritical Fenton Oxidation: New Advanced Oxidation Technology
Publication: Journal of Environmental Engineering
Volume 146, Issue 4
Abstract
The roles of in supercritical water oxidation (SCWO) were investigated. The results showed that some of the could persist for a short time in SCW, and organic pollutants were mainly oxidized by the generated from the in SCWO. However, the introduction of into the SCWO system with formed a new Fenton oxidation environment, i.e., supercritical Fenton oxidation (SCFO), which showed the cooperative effect of Fenton oxidation and SCWO. Comparative experiments of phenol and -aminophenol (PAP) in SCWO and SCFO, respectively, were carried out. The results showed that, in the SCFO system, the yield from the oxidative degradation of phenol-simulated wastewater () in 45s could reach 73.3%, much higher than that in the SCWO (49.2%) under the same conditions. After 8 min, the yield in SCFO (97.4%) was also significantly higher than that in SCWO (89.4%). The degradation efficiency of PAP-simulated wastewater () in the SCFO system exceeded 94.3%, especially under acidic conditions, and the degradation efficiency reached 97.4%, much higher than that in the SCWO system (86.2%).
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Data Availability Statement
All data used during the study appear in the published article.
Acknowledgments
This work was supported by the National Natural Science Foundation of China (Project No. 21477108).
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Published In
Journal of Environmental Engineering
Volume 146 • Issue 4 • April 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: May 13, 2019
Accepted: Aug 6, 2019
Published online: Feb 13, 2020
Published in print: Apr 1, 2020
Discussion open until: Jul 13, 2020
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