本研究是以H2O2/Fe2+的一種化學氧化法，稱為Fenton法，來處理反應性染料-Black B，並外加UV光或電場來增進去除效果。發現染料經Fenton降解後，會產生甲酸及草酸，佔實際測得COD值一半以上，為主要中間產物，而且在外加UV光或電場後，處理效果為Photo-Fenton＞FeredFenton＞Fenton。Fered-Fenton法的原理是用鐵離子經電解還原產生的亞鐵離子再與雙氧水進行反應，發現當操作在較佳電流效率時，對於甲酸有良好礦化效果，但是對於草酸的礦化效果較差；相較下，Photo-Fenton對於甲酸及草酸則有相當優異的去除效果。另外經本實驗證實，Photo-Fenton主要反應機制應為草酸鐵與UV光的反應，還原產生Fe2+並伴隨著草酸的礦化。

　　The investigation used H2O2/Fe2+, one of the chemical oxidation methods called Fenton, to treat reactive dye-Black B. And added UV light or electric field to improve removal efficiencies. Experimental results showed that when dye degraded by Fenton, would product formic acid and oxalic acid, which’s COD were ca half of actual measured, were major intermediates. The COD removal efficiencies was Photo-Fenton＞Fered-Fenton>Fenton. Fered-Fenton process applied H2O2 and electrogenerated Fe2+ produced via the reduction of ferric ion. When Fered-Fenton was operated under nice current efficiency, have well removal efficiencies for formic acid, but not for oxalic acid. In contrast, Photo-Fenton have well removal efficiencies for formic acid and oxalic acid. Through my investigation verified that, the reaction mechanism of Photo-Fenton was UV light reacted with ferrioxalate, proceeded reduced Fe2+ and degraded oxalic acid.

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