在ROC溶液中对均质和异质的芬顿式流通式氧化进行竞争性研究
Abed-Alhakeem Azaiza1, Raphael Semiat1, Hilla Shemer1
1Rabin Desalination Laboratory, Department of Chemical Engineering, Technion - Israel Institute of Technology, Haifa 3200003, Israel
概括
这项研究探讨了芬顿式氧化,以从废水度中去除微污染物propoxur. 异质铁酸盐催化剂显示出希望,在最佳条件下与同质催化剂相匹配.
科学领域:
- 环境化学环境化学
- 水处理技术水处理技术
- 催化剂是一种催化剂.
背景情况:
- 反透 (RO) 是一种三级废水处理方法,但管理其缩物 (ROC) 仍然是一个挑战.
- 氧 (PR) 是一种微污染物,需要从回收水中有效地去除.
- 芬顿式的氧化过程有可能降解废水中的反抗性有机化合物.
研究的目的:
- 评估同质和异质的芬顿式氧化,以从合成ROC中去除propoxur.
- 在连续浸泡陶膜反应堆中研究一种新型无形铁化 (Fh) 催化剂的性能.
- 评估运行参数和ROC离子组成对propoxur降解效率的影响.
主要方法:
- 一种新型无形铁 (Fh) 异质催化剂的合成和表征.
- 潜水陶膜反应堆用于ROC处理的连续运行.
- 同质的Fe3+催化剂与异质的Fh催化剂的比较,用于氧化.
- 在不同的H2O2,Fh度和停留时间下分析普罗波克苏尔去除效率.
主要成果:
- 陶膜实现了>99.6%的铁酸盐催化剂的排斥.
- 同质的Fe3+催化剂显示出比 Fh. Fh. Fh. Fh. Fh. Fh. Fh. Fh. 的更高的初始propoxur去除效率.
- 优化的H2O2和Fh度产生了与同质催化剂相美的氧化物去除效率.
- 增加的停留时间增强了素的去除,在88分钟时达到87%.
- 在ROC的离子组合中,它对propoxur的氧化有抑制作用.
结论:
- 使用铁酸盐的异质芬顿式氧化是一种可行的选择,可以从ROC中去除propoxur.
- 膜反应堆中的连续运行证明了这种方法的实际应用.
- 进一步优化催化剂度和停留时间可以提高处理效率.
相关概念视频
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