Fe2+强化UV/H2O2降解水中喹啉的研究

被引：2

作者：

陈莉荣

于楷伦

谷振超

机构：

[1] 内蒙古科技大学能源与环境学院

来源：

应用化工 | 2020年 / 49卷 / 11期

关键词：

喹啉; Fe2+; UV/H2O2; 高级氧化; 降解速率常数;

D O I：

10.16581/j.cnki.issn1671-3206.20200824.027

中图分类号：

X703 [废水的处理与利用];

学科分类号：

083002 ;

摘要：

采用UV/H2O2体系来降解水中的喹啉,研究了氧化剂投加量和溶液初始pH值对喹啉降解效果的影响,同时考察了Fe2+强化UV/H2O2体系对喹啉的降解率和矿化率的影响。结果表明,当喹啉初始浓度（C0）=15 mg/L、紫外光照强度（I0）=8.96 mW/cm2、反应温度为25℃时,在pH=7.01、[H2O2]∶[QL]=40的条件下,反应60 min后,喹啉的去除率为41.11%,反应120 min后,TOC的去除率为32.89%。控制上述反应条件不变,向原反应体系中加入Fe2+,当[Fe2+]∶[H2O2]=1∶65时,喹啉和TOC的去除率分别提升至90.90%和65.07%。喹啉的降解过程符合一级动力学方程（R2≥0.960）,Fe2+强化前后,喹啉的降解速率常数(kobs)由0.008 5 min-1增加至0.063 8 min-1。采用每一对数减小级电能输入(EEo)指标对两种工艺的电能效率进行评估,结果表明,Fe2+的加入显著减小了UV/H2O2体系的电能消耗,研究结果可为实际工程提供参考。

引用

页码：2808 / 2811+2815 +2815

页数：5

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