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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Veröffentlicht in:	Journal of environmental sciences (China) 2009, Vol.21 (1), p.35-40
Hauptverfasser:	Huang, Yao-Hui, Su, Hsiao-Ting, Lin, Li-Way
Format:	Artikel
Sprache:	eng
Schlagworte:	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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Zusammenfassung:	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