Comparative electrochemical degradation of phthalic acid esters using   boron-doped diamond and Pt anodes

doi:10.1016/j.chemosphere.2010.06.006

CORC > 北京大学 > 环境科学与工程学院

	Comparative electrochemical degradation of phthalic acid esters using boron-doped diamond and Pt anodes
	Li, Hongna ; Zhu, Xiuping ; Jiang, Yi ; Ni, Jinren
刊名	chemosphere
	2010
关键词	Electrochemical oxidation Boron-doped diamond electrode Phthalic acid esters Wastewater treatment WASTE-WATER TREATMENT N-BUTYL PHTHALATE BISPHENOL-A DIETHYL PHTHALATE ACTIVATED-SLUDGE ELECTRO-FENTON OXIDATION BIODEGRADATION PERFORMANCE PLATINUM
DOI	10.1016/j.chemosphere.2010.06.006
英文摘要	Phthalic acid esters (PAEs) are a group of endocrine disruptors commonly used as plasticizers. The present study compares the electrochemical oxidation of PAEs at boron-doped diamond (BDD) anode with that at Pt anode. Both the degradation and the mineralization processes of PAEs became much slower when using the Pt anode compared with that using the BDD anode. Moreover, the degradation rates of PAEs decreased at the BDD anode but increased at the Pt anode with increasing alkyl chain length. This was attributed to the different oxidation mechanisms at the two anodes. The BDD electrode has an inert surface that holds a large amount of strong oxidants as free hydroxyl radicals ((center dot)OH), causing electrophilic attack by (center dot)OH to be the main reaction. Therefore, degradation of PAEs became slower on the BDD anode due to there being less available electronic energy as the alkyl chain length increased. However, adsorbed oxidants (PtO(x+1)) with low oxidation ability tended to form on the surface of the active Pt anode. Therefore. PAEs with longer alkyl chains promote faster degradation owing to their stronger hydrophobicity. Detection of intermediates in the GC/MS tests confirmed the above conclusion, in which oxidation of dimethyl phthalate on BDD occurred on the aromatic ring at first, while the alkyl chain was preferentially attacked on the Pt anode. (C) 2010 Elsevier Ltd. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000280873200004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Environmental Sciences; SCI(E); EI; PubMed; 16; ARTICLE; 8; 845-851; 80
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/158909]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Li, Hongna,Zhu, Xiuping,Jiang, Yi,et al. Comparative electrochemical degradation of phthalic acid esters using boron-doped diamond and Pt anodes[J]. chemosphere,2010.
APA	Li, Hongna,Zhu, Xiuping,Jiang, Yi,&Ni, Jinren.(2010).Comparative electrochemical degradation of phthalic acid esters using boron-doped diamond and Pt anodes.chemosphere.
MLA	Li, Hongna,et al."Comparative electrochemical degradation of phthalic acid esters using boron-doped diamond and Pt anodes".chemosphere (2010).