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首页> 外文期刊>Journal of the Brazilian Chemical Society >Comparing Photo-Fenton Degradation of Malachite Green Using Fe II and Fe III Salts Under UVA Light Irradiation
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Comparing Photo-Fenton Degradation of Malachite Green Using Fe II and Fe III Salts Under UVA Light Irradiation

机译：在UVA光照射下使用Fe II和Fe III盐比较孔雀石绿的光Fenton降解

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Photo-Fenton degradation of pollutants involves the reaction of Fe II salts with hydrogen peroxide under ultraviolet A irradiation, which significantly enhances the process. The reaction with Fe III salts is slower and therefore less studied. In this work, we compared the efficiencies of Fe III and Fe II salts in the photo-Fenton degradation of malachite green (MG), a known carcinogen. We optimized the concentration of reagents and the pH to achieve the highest MG degradation with the lowest amounts of reagents. Complete MG degradation was achieved under 2 h for the Fe III system and 1 h for Fe II , reaching a high degree of mineralization, even in the presence of chloride and sulfate anions. The results show that although slower, the reaction with Fe III salts allows significant photodegradation of MG under mild reaction conditions.
机译：污染物的光芬顿降解涉及紫外线辐射下Fe II盐与过氧化氢的反应，这大大增强了该过程。与Fe III盐的反应较慢，因此研究较少。在这项工作中，我们比较了已知的致癌物孔雀石绿（MG）在光芬顿降解中的Fe III和Fe II盐的效率。我们优化了试剂的浓度和pH值，以最少的试剂量实现了最高的MG降解率。 Fe III系统在2 h内和Fe II在1 h下均实现了完全MG降解，即使在存在氯和硫酸根阴离子的情况下，也达到了高度矿化的程度。结果表明，尽管速度较慢，但​​与Fe III盐的反应可在温和的反应条件下显着降解MG。

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