In this study, the degradation of crystal violet (CV) was investigated by different oxidation processes; ozone (OZ), peroxone (PO), electrolysis (E), electrolysis/H₂O₂ (ECP), electroperoxone (EPO), and electrolysis/peroxene/H₂O₂ (EPOP). Main parameters including contact time, pH, CV concentration, and effect of scavengers were studied. The results showed that all processes were capable of CV decolorization. Among these processes, peroxone and electrolysis/peroxene/H₂O₂ with efficiency about > 90% were more effective than other ones. A significant decrease in oxidation rate of CV was observed by adding scavengers. This fact was due to higher affinity to react with free radicals. To confirm degradation of CV, FTIR spectra and nitrate ion level were taken. Also, to recognize toxicity the treated wastewater was tested against coliform bacteria. Growths of Escherichia coli in EMB medium were observed. As a result, it confirms that the treated effluent can be discharged to environment.

中文翻译：

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使用臭氧，过氧化物，过氧化物和电解工艺从水溶液中降解结晶紫（CV）：比较研究

在这项研究中，通过不同的氧化过程研究了结晶紫（CV）的降解。臭氧（OZ），过氧化物（PO），电解（E），电解/ H ₂ O ₂（ECP），电过氧化物（EPO）和电解/过氧化氢/ H ₂ O ₂（EPOP）。研究了主要参数，包括接触时间，pH，CV浓度和清除剂的作用。结果表明，所有工艺均能够进行CV脱色。在这些方法中，过氧化物和电解/过氧化物/ H ₂ O ₂效率> 90％的人比其他人更有效。通过添加清除剂，可以观察到CV氧化速率的显着降低。这个事实是由于与自由基反应的亲和力更高。为了确认CV的降解，采用了FTIR光谱和硝酸根离子水平。另外，为了识别毒性，对处理过的废水进行了大肠菌的测试。的生长的大肠杆菌中观察到EMB平台。结果，证实了可以将处理后的废水排放到环境中。