PolyU IR

PolyU Institutional Repository >
Civil and Environmental Engineering >
CEE Journal/Magazine Articles >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/2405

Title: Kinetic modeling of electro-Fenton reaction in aqueous solution
Authors: Liu, Hong
Li, Xiang-zhong
Leng, Yongjun
Wang, Chuan
Subjects: E-Fenton
Kinetic model
Issue Date: Mar-2007
Publisher: Elsevier
Citation: Water research, Mar. 2007, v. 41, no. 5, p. 1161-1167.
Abstract: To well describe the electro-Fenton (E-Fenton) reaction in aqueous solution, a new kinetic model was established according to the generally accepted mechanism of E-Fenton reaction. The model has special consideration on the rates of hydrogen peroxide (H₂O₂) generation and consumption in the reaction solution. The model also embraces three key operating factors affecting the organic degradation in the E-Fenton reaction, including current density, dissolved oxygen concentration and initial ferrous ion concentration. This analytical model was then validated by the experiments of phenol degradation in aqueous solution. The experiments demonstrated that the H₂O₂ gradually built up with time and eventually approached its maximum value in the reaction solution. The experiments also showed that phenol was degraded at a slow rate at the early stage of the reaction, a faster rate during the middle stage, and a slow rate again at the final stage. It was confirmed in all experiments that the curves of phenol degradation (concentration vs. time) appeared to be an inverted "S" shape. The experimental data were fitted using both the normal first-order model and our new model, respectively. The goodness of fittings demonstrated that the new model could better fit the experimental data than the first-order model appreciably, which indicates that this analytical model can better describe the kinetics of the E-Fenton reaction mathematically and also chemically.
Description: DOI: 10.1016/j.watres.2006.12.006
Rights: Water Research © 2007 Elsevier. The journal web site is located at http://www.sciencedirect.com.
Type: Journal/Magazine Article
URI: http://hdl.handle.net/10397/2405
ISSN: 0043-1354
Appears in Collections:CEE Journal/Magazine Articles

Files in This Item:

File Description SizeFormat
70.pdfPre-published version203.34 kBAdobe PDFView/Open
Locate publisher version via PolyU eLinks

Facebook Facebook del.icio.us del.icio.us LinkedIn LinkedIn

All items in the PolyU Institutional Repository are protected by copyright, with all rights reserved, unless otherwise indicated.
No item in the PolyU IR may be reproduced for commercial or resale purposes.


© Pao Yue-kong Library, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
Powered by DSpace (Version 1.5.2)  © MIT and HP
Feedback | Privacy Policy Statement | Copyright & Restrictions - Feedback