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	Operational conditions of a membrane filtration reactor coupled with photocatalytic oxidation
	Huang, Xia ; Meng, Yaobin ; Liang, Peng ; Qian, Yi
	2010-05-10 ; 2010-05-10
关键词	photocatalytic oxidation slurry reactor membrane separation catalyst conservation catalyst activity WASTE-WATER HYDROXYL RADICALS DETOXIFICATION DEGRADATION PURIFICATION PERFORMANCE DESTRUCTION SUSPENSIONS Engineering, Chemical
中文摘要	Membrane separation was employed in a novel photocatalytic oxidation slurry reactor to conserve catalyst. This paper reports some critical operational conditions of this reactor. While fine-bubble aeration served to suspend the catalyst, introducing an intermittent coarse bubbling under the membrane during operation was vital to counteract TiO2 catalyst entrapment on membrane surface. Circulation flow in the reactor was also found to have certain effect on counteracting the dropping out of catalyst. A submerged membrane module with a pore size of 0.1 mu m successfully conserved the powdered catalysts within the reactor after 2 days' preluding filtration. As for pollutant removal, membrane filtration and circulation flow had no effect, whereas increase in gas holdup had. Running the reactor to treat model pollutant dissolved in tap water revealed that calcium carbonate both deactivated the catalyst and contributed to membrane fouling, suggesting that water hardness and alkalinity deserves appropriate treatment to warrant a good performance of such a reactor. (c) 2006 Published by Elsevier B.V.
语种	英语 ; 英语
出版者	ELSEVIER SCIENCE BV ; AMSTERDAM ; PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/23234]
专题	清华大学
推荐引用方式 GB/T 7714	Huang, Xia,Meng, Yaobin,Liang, Peng,et al. Operational conditions of a membrane filtration reactor coupled with photocatalytic oxidation[J],2010, 2010.
APA	Huang, Xia,Meng, Yaobin,Liang, Peng,&Qian, Yi.(2010).Operational conditions of a membrane filtration reactor coupled with photocatalytic oxidation..
MLA	Huang, Xia,et al."Operational conditions of a membrane filtration reactor coupled with photocatalytic oxidation".(2010).

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