A new reactor coupling heterogeneous Fenton-like catalytic oxidation with membrane separation for degradation of organic pollutants
✍ Scribed by Yuan-Yuan Zhang; Chun He; Virender-Kumar Sharma; Xiang-Zhong Li; Shuang-Hong Tian; Ya Xiong
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 2011
- Tongue
- English
- Weight
- 348 KB
- Volume
- 86
- Category
- Article
- ISSN
- 0268-2575
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✦ Synopsis
BACKGROUND: There is growing interest in employing heterogeneous Fenton-like catalysts in slurry to obtain higher activity. However, fine size particles create problems associated with recovery from the treated water. Therefore, it is highly desirable to develop a novel Fenton-like process that not only has high degradation efficiency of organic pollutants, but also allows for easily reusing the catalysts.
RESULT: A new reactor was investigated by coupling the heterogeneous Fenton-like oxidation with membrane separation.
Results showed that the FeY catalyst could be almost filtrated by a submerged micro-filtration membrane in the reactor to continuously activate H 2 O 2 . For a FeY dose of 1 g L -1 and a residence time of 120 min, the degradation efficiency of AO II reached 97%.
CONCLUSIONS:
In the new reactor, degradation of AO II occurred continuously and efficiently without an additional FeY separation process. The treatment capacity of this FeY catalyst for wastewater containing 100 mg L -1 AO II in the reactor was estimated to be 82 times that of a reactor in which the catalyst could not be reused. The distinguishing technical feature of this reactor was the reuse of the Fenton-like catalyst.