Efficient electrochemical oxidation of thallium (I) in groundwater using   boron-doped diamond anode

doi:10.1016/j.electacta.2016.11.085

CORC > 北京大学 > 环境科学与工程学院

	Efficient electrochemical oxidation of thallium (I) in groundwater using boron-doped diamond anode
	Li, Yunlong ; Zhang, Baogang ; Borthwick, Alistair G. L. ; Long, Yujiao
刊名	ELECTROCHIMICA ACTA
	2016
关键词	Thallium Electrochemical oxidation Boron-doped diamond anode Groundwater DRIVEN PHOTOCATALYTIC INACTIVATION P-SUBSTITUTED PHENOLS WASTE-WATER TREATMENT SOLVENT-EXTRACTION ORGANIC POLLUTANTS AQUEOUS-SOLUTIONS ESCHERICHIA-COLI BDD ELECTRODES METHYL-ORANGE PBO2 ANODES
DOI	10.1016/j.electacta.2016.11.085
英文摘要	Thallium (Tl) is a highly toxic element whose occurrence is widespread in soil and groundwater. The present study investigates the oxidation of Tl(I) with boron-doped diamond (BDD) anode in an electrochemical system, compared with PbO2 and carbon felt materials. Under initial conditions of Tl(I) of 10 mg L-1, pH of 2.0, and current density of 5 mA cm(-2),99.2 +/- 0.9% of Tl(I) is oxidized to Tl(III) within 15 min. This process is suppressed by the increase of initial Tl(I) concentration and initial pH, respectively, while it is enhanced with the increase of current density. Compared with direct electrochemical effect, indirect electrochemical oxidation with the generated oxidants mainly contribute to the excellent performance and .OH plays a significant role. Subsequent coagulation/precipitation realizes the nearly complete removal of total Tl in the exhaust electrolyte and the quality of the effluent can meet EPA drinking water standards. Analysis of the generated precipitate further indicates that Tl(III) is the main oxidation state of Tl. This study offers a potentially attractive method for remediation of Tl-polluted groundwater. (C) 2016 Elsevier Ltd. All rights reserved.; National Natural Science Foundation of China (NSFC) [21307117, 41440025]; Fundamental Research Funds for the Central Universities [2652015300, 2652015131]; SCI(E); ARTICLE; zbgcugb@gmail.com; 1137-1143; 222
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/460684]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Li, Yunlong,Zhang, Baogang,Borthwick, Alistair G. L.,et al. Efficient electrochemical oxidation of thallium (I) in groundwater using boron-doped diamond anode[J]. ELECTROCHIMICA ACTA,2016.
APA	Li, Yunlong,Zhang, Baogang,Borthwick, Alistair G. L.,&Long, Yujiao.(2016).Efficient electrochemical oxidation of thallium (I) in groundwater using boron-doped diamond anode.ELECTROCHIMICA ACTA.
MLA	Li, Yunlong,et al."Efficient electrochemical oxidation of thallium (I) in groundwater using boron-doped diamond anode".ELECTROCHIMICA ACTA (2016).