We investigated the mineralization of CI Reactive Yellow 145 (RY145) in aqueous solution in a UV-enhanced ozonation (UV/O₃) reactor. The effects of several operational parameters, including solution pH, initial dye concentration, ozone feed, and bulk temperature, on total organic carbon (TOC) removal were investigated. The experimental results illustrated that ozonation combined with UV radiation for removal of TOC was more efficient than ozonation alone or UV irradiation alone. At an initial pH of 8.0, bulk temperature of 30 °C, ozone feed of 4.8 g/h, and initial dye concentration of 500 mg/L, the TOC removal efficiency of RY145 reached ∼80% after 150 min under 175 W UV irradiation. Intermediates formed during RY145 mineralization were detected by gas chromatography coupled with mass spectrometry (GC/MS) and ion chromatography (IC). On the basis of our results, we propose a tentative degradation pathway.

中文翻译：

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紫外增强臭氧化法在水溶液中CI活性黄145的矿化作用

我们研究了UV臭氧氧化（UV / O ₃）中CI活性黄145（RY145）在水溶液中的矿化作用）反应堆。研究了包括溶液pH值，初始染料浓度，臭氧进料和本体温度在内的几个操作参数对总有机碳（TOC）去除的影响。实验结果表明，与单独的臭氧化或单独的紫外线辐射相比，臭氧化与紫外线辐射相结合可更有效地去除TOC。在初始pH值为8.0，体温为30°C，臭氧进料为4.8 g / h，初始染料浓度为500 mg / L的条件下，在175 W UV照射下150分钟后，RY145的TOC去除效率达到约80％。 。通过气相色谱-质谱联用（GC / MS）和离子色谱（IC）检测RY145矿化过程中形成的中间体。根据我们的结果，我们提出了一种初步的降解途径。