Removal of citrate and hypophosphite binary components using Fenton, photo-Fenton and electro-Fenton processes

Both citrate and hypophosphite in aqueous solution were degraded by advanced oxidation processes （Fe^2＋/H2O2, UV/Fe^2＋/H2O2, and electrolysis/Fe^2＋/H2O2） in this study. Comparison of these techniques in oxidation efficiency was undertaken. It was found that Fenton process could not completely degrad...

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Bibliographic Details
Published in:Journal of environmental sciences (China) 2009, Vol.21 (1), p.35-40
Main Authors: Huang, Yao-Hui, Su, Hsiao-Ting, Lin, Li-Way
Format: Article
Language:English
Subjects:
advanced oxidation processes
Aqueous solutions
China
citrate
Citrates
Citric Acid - chemistry
Citric Acid - isolation & purification
Degradation
electro-Fenton
Electrochemistry
Electrolysis
Fenton
Hydrogen Peroxide - chemistry
Hydrogen-Ion Concentration
hypophosphite
Inhibition
Iron - chemistry
Oxidation
Oxidation-Reduction
Phosphites - chemistry
Phosphites - isolation & purification
photo-Fenton
Photochemical Processes
wastewater
柠檬酸盐
次磷酸盐
氧化处理
环境保护
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Summary:Both citrate and hypophosphite in aqueous solution were degraded by advanced oxidation processes （Fe^2＋/H2O2, UV/Fe^2＋/H2O2, and electrolysis/Fe^2＋/H2O2） in this study. Comparison of these techniques in oxidation efficiency was undertaken. It was found that Fenton process could not completely degrade citrate in the presence of hypophosphite since it caused a series inhibition. Therefore, UV light （photo-Fenton） or electron current （electro-Fenton） was applied to improve the degradation efficiency of the Fenton process. Results showed that both photo-Fenton and electro-Fenton processes could overcome the inhibition of hypophosphite, especially the electro-Fenton.
ISSN:1001-0742
1878-7320
DOI:10.1016/S1001-0742(09)60008-5