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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received June 23, 2008
Accepted September 30, 2008

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Decomposition of 2-chlorophenol by supercritical water oxidation with zirconium corrosion

Jae-Hyuk Lee Sang-Ha Son Tran Tan Viet Chang-Ha Lee^†

Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 120-749, Korea

Korean Journal of Chemical Engineering, March 2009, 26(2), 398-402(5), 10.1007/s11814-009-0067-0

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Abstract

The 2-chlorophenol (2-CP) was oxidized in a continuous anti-corrosive supercritical water system. The variation of decomposition efficiency by the corrosion of zirconium 702 was also studied at the variation of feed concentration and reaction time. According to AES depth profile, the oxygen penetration depth to zirconium was not proportional to the exposure time. It might stem from the formation of zirconium oxide layer on the surface delaying the corrosion. However, the increase in feed concentration accelerated the corrosion of zirconium. The corrosion of zirconium at low feed concentration led to the improvement of decomposition efficiency due to the catalytic effect of formed zirconium oxides, while that at high feed concentration deteriorated the decomposition efficiency owing to large consumption of oxidant in corrosion.

Keywords

Supercritical Water Oxidation Halogenated Compounds Corrosion Zirconium

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