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化工学报  2013 

芬顿法处理活性艳红X-3B的试验优化及降解规律

DOI: 10.3969/j.issn.0438-1157.2013.03.037, PP. 1049-1054

Keywords: 芬顿法,偶氮染料,活性艳红X-3B,脱色,活化能

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Abstract:

通过试验方法优化,研究了芬顿体系中pH值、温度、H2O2投加量以及过氧化氢/硫酸亚铁摩尔比C(H2O2)/C(FeSO4)对活性艳红X-3B脱色及总有机碳(totalorganiccarbon,TOC)去除率的影响。结果表明:初始pH值对脱色率和TOC去除率的影响均最大。在正交试验的基础上,通过单因素试验进一步优化了反应条件,得出芬顿法去除活性艳红X-3B的最佳反应条件为pH=3、H2O2投加量为2.5mmol·L-1、C(H2O2)/C(FeSO4)=10时,模拟废水的脱色率可达98.93%,TOC去除率可达48.81%。此外,芬顿体系的反应速率受温度的影响较大,色度去除符合二级动力学模型,根据Arrhenius公式计算得出活性艳红X-3B在芬顿体系中的反应活化能约为107kJ·mol-1。

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