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dc.contributor.authorLi, Y
dc.contributor.authorZhang, B
dc.contributor.authorBorthwick, Alistair
dc.contributor.authorLong, Y
dc.date.accessioned2021-08-22T17:25:53Z
dc.date.available2021-08-22T17:25:53Z
dc.date.issued2016-12
dc.identifier.issn0013-4686
dc.identifier.urihttp://hdl.handle.net/10026.1/17718
dc.description.abstract

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.

dc.format.extent1137-1143
dc.languageen
dc.language.isoen
dc.publisherElsevier BV
dc.titleEfficient electrochemical oxidation of thallium (I) in groundwater using boron-doped diamond anode
dc.typejournal-article
dc.typeJournal Article
plymouth.volume222
plymouth.publication-statusPublished
plymouth.journalElectrochimica Acta
dc.identifier.doi10.1016/j.electacta.2016.11.085
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering/School of Engineering, Computing and Mathematics
plymouth.organisational-group/Plymouth/Users by role
plymouth.organisational-group/Plymouth/Users by role/Academics
dc.rights.embargoperiodNot known
rioxxterms.versionofrecord10.1016/j.electacta.2016.11.085
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.typeJournal Article/Review


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