CAJ | 학술논문

文章采用高铁酸钾／紫外光（254 nm ）协同体系降解对硝基苯酚模拟废水；考察了高铁酸钾投加量、对硝基苯酚初始质量浓度、pH值、降解时间等参数对CODCr降解率的影响，通过正交试验优化此方法降解对硝基苯酚的工艺参数，并对产物进行了紫外光谱扫描分析，初步探讨降解机理。结果表明，高铁酸钾／254 nm紫外光协同体系可有效降解对硝基苯酚；当高铁酸钾与对硝基苯酚的摩尔比为9∶1，对硝基苯酚质量浓度为30 mg／L ，pH值为11及降解时间为30 min时，CODCr降解率可达85.71％。降解较好地符合二级反应，速率常数为6.49×10－5 L／（mol · s）。
문장채용고철산갑／자외광（254 nm ）협동체계강해대초기분분모의폐수；고찰료고철산갑투가량、대초기분분초시질량농도、pH치、강해시간등삼수대CODCr강해솔적영향，통과정교시험우화차방법강해대초기분분적공예삼수，병대산물진행료자외광보소묘분석，초보탐토강해궤리。결과표명，고철산갑／254 nm자외광협동체계가유효강해대초기분분；당고철산갑여대초기분분적마이비위9∶1，대초기분분질량농도위30 mg／L ，pH치위11급강해시간위30 min시，CODCr강해솔가체85.71％。강해교호지부합이급반응，속솔상수위6.49×10－5 L／（mol · s）。
Degradation of p‐nitrophenol in simulated wastewater was studied by potassium ferrate com‐bined with 254 nm ultraviolet(UV) light .The effect of the parameters of potassium ferrate dose ,p‐nitrophenol initial concentration ,solution pH value ,degradation time on the degradation efficiency of CODCr of p‐nitrophenol was discussed ,and the processing parameters were obtained by optimized or‐thogonal experiment .The degradation products were analyzed by UV spectrum and its degradation mechanism was also proposed .The results showed that p‐nitrophenol was effectively degraded by po‐tassium ferrate combined with 254 nm UV light .When the mole ratio of K2 FeO4 to nitrobenzene was 9∶1 ,the p‐nitrophenol initial concentration was 30 mg/L ,the initial pH value was 11 and the degra‐dation time was 30 min ,the degradation efficiency of CODCr reached above 85.71% .The degradation process was in accordance with the second order reaction and the kinetic rate constant of the reaction w as 6.49 × 10-5 L/(mol · s) .