A Novel Reaction System to Degradation of Organic Toxicants in Water

Abstract

Abstract: The carbon-PTFE O₂(air)-Fed cathode with a high current efficiency was prepared on which H₂O₂ was electro-generated by using O₂ in air. It was used to degrade the organic toxic contaminants in the new type reaction system-electrochemical oxidation system, photo-excitation oxidant system and the photoelectro-Fenton system. The decomposition rate of H₂O₂ was measured in different systems under different conditions and was compared with the traditional system. The reaction rate of aniline to mineral was measured in the new type systems, and the results indicated the decomposition rate of H₂O₂ has an excellent parallel relation with the degradation rate of aniline, when the carbon-PTFE O₂ (air)-Fed worked in suit successively. Besides, the best system to degrade the organic molecule was the photoelectro-Fenton system, in which H₂O₂ was decomposed fastest. By comparing with photoelectro-Fenton system and photo-Fenton system, it reveals the important role of interface between the carbon-PTFE O₂(air)-Fed cathode and solution in photoelectro-Fenton system. In this paper, we also discuss the mechanism of aniline to mineral in photoelectro-Fenton system.

Key words: Photo electro-Fenton, Degradation of the organic toxic contaminants, Aniline

CLC Number:

O646

TrendMD:

WANG Yu-Ling, CAI Nai-Cai, ZHANG Huai-Song, LONG Fei . A Novel Reaction System to Degradation of Organic Toxicants in Water[J]. Chem. J. Chinese Universities, 2002, 23(10): 1969.

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A Novel Reaction System to Degradation of Organic Toxicants in Water

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