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Electrochemical removal of haloacetic acids in a three-dimensional electrochemical reactor with Pd-GAC particles as fixed filler and Pd-modified carbon paper as cathode
Zhao, Xu; Li, Angzhen; Mao, Ran; Liu, Huijuan; Qu, Jiuhui
2014
Source PublicationWATER RESEARCH
ISSN0043-1354
Volume51Issue:1Pages:134-143
AbstractThe reductive removal of haloacetic acids (HAAs) in a three-dimensional electrochemical continuous reactor with Pd-granular activated carbon (Pd-GAC) particles as fixed filler and Pd-modified carbon paper (Pd-C) as cathode was studied in this research. Pd-C electrode was prepared from PdCl2 via electrodeposition onto carbon paper. Pd-GAC particles were prepared by the impregnation of Pd2+ ions onto GAC. Efficient electrocatalytic reduction of HAAs in this reactor was exhibited. Effects of current density, initial HHAs concentration, and hydraulic retention time on the HHAs removal were investigated. Under the current density of 0.3 mA/cm(2), HAAs with initial concentration of 120 mu g/L were reduced to be less than 60 mu g/L with hydraulic retention time of 20 min. Electron transfer and HAAs diffusion both played an important role in controlling the electro-reduction process under the conditions of current density less than 0.6 mA/cm2 with an initial HAAs concentration ranging from 120 to 600 mu g/L. However, the HAAs diffusion became the primary rate-limiting step when the current density was higher than 0.6 mA/cm(2). The Pd and Pd2+ species were detected by X-ray photoelectron spectroscopy. The stability of the electrochemical reactor in the reduction removal of HAAs was also exhibited. (C) 2013 Elsevier Ltd. All rights reserved.
Department环境水质学国家重点实验室
KeywordPd-c Electrode Pd-gac Three-dimensional Electrochemical Reactor Electrocatalytic Reduction Haloacetic Acids
WOS IDWOS:000331681200014
Citation statistics
Cited Times:46[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/9538
Collection环境水质学国家重点实验室
Recommended Citation
GB/T 7714
Zhao, Xu,Li, Angzhen,Mao, Ran,et al. Electrochemical removal of haloacetic acids in a three-dimensional electrochemical reactor with Pd-GAC particles as fixed filler and Pd-modified carbon paper as cathode[J]. WATER RESEARCH,2014,51(1):134-143.
APA Zhao, Xu,Li, Angzhen,Mao, Ran,Liu, Huijuan,&Qu, Jiuhui.(2014).Electrochemical removal of haloacetic acids in a three-dimensional electrochemical reactor with Pd-GAC particles as fixed filler and Pd-modified carbon paper as cathode.WATER RESEARCH,51(1),134-143.
MLA Zhao, Xu,et al."Electrochemical removal of haloacetic acids in a three-dimensional electrochemical reactor with Pd-GAC particles as fixed filler and Pd-modified carbon paper as cathode".WATER RESEARCH 51.1(2014):134-143.
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