Effect of oxalate on photodegradation of bisphenol a at the interface of different iron oxides
文献类型： 外文期刊
作者： Li, F. B. 1 ; Li, X. Z. 2 ; Liu, C. S. 2 ; Li, X. M. 2 ; Liu, T. X. 2 ;
作者机构： 1.Hong Kong Polytech Univ, Dept Civil & Struct Engn, Hong Kong, Peoples R China
2.Hong Kong Polytech Univ, Dept Civil & Struct Engn, Hong Kong, Peoples R China; Guangdong Inst EcoEnvironm & Soil Sci, Guangdong Key Lab Agr Environm Pollut Integrated, Guangzhou 510650, Peoples R China
关键词： COMPOSITE TIO2-ZEOLITE SHEETS;PHOTO-FENTON REACTION;HYDROGEN-PEROXIDE;OXALIC-ACID;DEGRADATION;PHOTOCHEMISTRY;DECOMPOSITION;COMPLEXES;SURFACES;SYSTEMS
期刊名称：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH （ 影响因子：3.72； 五年影响因子：3.99 ）
ISSN：
年卷期：
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收录情况： SCI
摘要： In this study, a series of experiments were conducted to investigate the effect of the properties of iron oxides and oxalate on the degradation of bisphenol A (BPA) as a model organic pollutant in aqueous solution under UV illumination. Three iron oxides (Magh-300, Hem-420, and Hem-550) were prepared by a hydrothermal process and characterized by X-ray diffraction, the Brunauer-Emmett-Teller method, and scanning electron microscopy. The experimental results confirmed that the existence of oxalate can greatly enhance the BPA degradation reaction on the iron oxides in aqueous solution compared to iron oxides alone. The properties of iron oxides influenced strongly the dependence of the BPA degradation on the oxalate concentration. The optimal initial concentrations of oxalate were determined to be 2.4, 2.4, and 0.6 mM for Magh-300, Hem-420, and Hem-550, respectively. The optimal pH value was found to be 3.93, 3.64, and 3.61, for Magh-300, Hem-420, and Hem-550, respectively. The rate of BPA degradation on different iron oxides with oxalate under UV illumination can be ranked as Magh-300 > Hem-420 > Hem-550. Furthermore, it was found that the dependence of BPA degradation is also attributable to the interaction between iron oxide and oxalate, and the formation of dissolved Fe in the solution or adsorbed Fe-oxalate species on the surface of iron oxides.
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