Degradation of high concentration 2,4-dichlorophenol by simultaneous photocatalytic-enzymatic process using TiO2/UV and laccase

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	Degradation of high concentration 2,4-dichlorophenol by simultaneous photocatalytic-enzymatic process using TiO2/UV and laccase
	Jia, Jingbo 1,2; Zhang, Songping 1; Wang, Ping 1; Wang, Huajun 2
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2012-02-29
卷号	205 期号:0 页码:150-155
关键词	2 Degradation Photocatalysis TiO2 Laccase 4-Dichlorophenol
ISSN号	0304-3894
通讯作者	Zhang, SP
英文摘要	Removal of 2,4-dichlorophenol (2,4-DCP) by TiO2/UV photocatalytic, laccase, and simultaneous photocatalytic-enzymatic treatments were investigated. Coupling of native laccase with TiO2/UV showed a negative synergetic effect due to the rapid inactivation of laccase. Immobilizing laccase covalently to controlled porous glass (CPG) effectively enhanced the stability of laccase against TiO2/UV induced inactivation. By coupling CPG-laccase with the TiO2/UV the degradation efficiency of 2,4-DCP was significantly increased as compared with the results obtained when immobilized laccase or TiO2/UV were separately used. Moreover, the enhancement was more remarkable for the degradation of 2,4-DCP with high concentration, such that for the degradation of 5 mM 2,4-DCP, 90% removal percentage was achieved within 2 h with the coupled degradation process. While for the TiO2/UV and CPG-laccase process, the removal percentage of 2,4-DCP at 2 h were only 26.5% and 78.1%, respectively. The degradation kinetics were analyzed using a intermediate model by taking into account of the intermediates formed during the degradation of 2,4-DCP. The high efficiency of the coupled degradation process therefore provided a novel strategy for degradation of concentrated 2,4-DCP. Furthermore, a thermometric biosensor using the immobilized laccase as biorecognition element was constructed for monitoring the degradation of 2,4-DCP, the result indicated that the biosensor was precise and sensitive. (C) 2011 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Technology ; Life Sciences & Biomedicine
类目[WOS]	Engineering, Environmental ; Engineering, Civil ; Environmental Sciences
研究领域[WOS]	Engineering ; Environmental Sciences & Ecology
关键词[WOS]	PHENOLIC-COMPOUNDS ; PILOT-SCALE ; BIOLOGICAL DEGRADATION ; HORSERADISH-PEROXIDASE ; INDUCED INACTIVATION ; TRAMETES-VERSICOLOR ; AQUEOUS-SOLUTION ; CHLOROPHENOLS ; LIGHT ; PENTACHLOROPHENOL
收录类别	SCI
语种	英语
WOS记录号	WOS:000301208700021
公开日期	2013-10-24
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/3921]
专题	过程工程研究所_生化工程国家重点实验室
作者单位	1.Chinese Acad Sci, Natl Key Lab Biochem Engn, Inst Proc Engn, Beijing 100190, Peoples R China 2.Univ Sci & Technol Beijing, Dept Civil & Environm Engn, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Jia, Jingbo,Zhang, Songping,Wang, Ping,et al. Degradation of high concentration 2,4-dichlorophenol by simultaneous photocatalytic-enzymatic process using TiO2/UV and laccase[J]. JOURNAL OF HAZARDOUS MATERIALS,2012,205(0):150-155.
APA	Jia, Jingbo,Zhang, Songping,Wang, Ping,&Wang, Huajun.(2012).Degradation of high concentration 2,4-dichlorophenol by simultaneous photocatalytic-enzymatic process using TiO2/UV and laccase.JOURNAL OF HAZARDOUS MATERIALS,205(0),150-155.
MLA	Jia, Jingbo,et al."Degradation of high concentration 2,4-dichlorophenol by simultaneous photocatalytic-enzymatic process using TiO2/UV and laccase".JOURNAL OF HAZARDOUS MATERIALS 205.0(2012):150-155.