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Article: Electrochemical degradation of bisphenol A on different anodes

TitleElectrochemical degradation of bisphenol A on different anodes
Authors
Issue Date2009
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/watres
Citation
Water Research, 2009, v. 43 n. 7, p. 1968-1976 How to Cite?
AbstractLaboratory experiments were carried out on the kinetics, pathways and mechanisms of electrochemical (EC) degradation of bisphenol A (BPA) on four types of anodes, Ti/boron-doped diamond (BDD), Ti/Sb-SnO2, Ti/RuO2 and Pt. There were considerable differences among the anodes in their effectiveness and performance of BPA electrolysis. BPA was readily destructed at the Ti/Sb-SnO2 and Ti/BDD anodes, the Pt anode had a moderate ability to remove BPA, and the Ti/RuO2 anode was incapable of effectively oxidising BPA. The intermediate products of EC degradation of BPA were detected and quantified by high-performance liquid chromatography (HPLC), and a general BPA degradation pathway was proposed based on the analytical results. It was suggested that {radical dot}OH radicals produced by water electrolysis attacked BPA to form hydroxylated BPA derivatives that were then transformed into one-ring aromatic compounds. These compounds underwent ring breakage, which led to the formation of aliphatic acids that were eventually mineralised by electrolysis to CO2. Compared to the Pt and Ti/RuO2 anodes, the Ti/Sb-SnO2 and Ti/BDD anodes were found to have higher oxygen evolution potentials and higher anodic potentials for BPA electrolysis under the same current condition. However, the stability and durability of the Ti/Sb-SnO2 anode still needs to be greatly improved for actual application. In comparison, with its high durability and good reactivity for organic oxidation, the Ti/BDD anode appears to be the more promising one for the effective EC treatment of BPA and similar endocrine disrupting chemical (EDC) pollutants. © 2009 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/58594
ISSN
2015 Impact Factor: 5.991
2015 SCImago Journal Rankings: 2.772
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorCui, Yhen_HK
dc.contributor.authorLi, Xyen_HK
dc.contributor.authorChen, Gen_HK
dc.date.accessioned2010-05-31T03:33:05Z-
dc.date.available2010-05-31T03:33:05Z-
dc.date.issued2009en_HK
dc.identifier.citationWater Research, 2009, v. 43 n. 7, p. 1968-1976en_HK
dc.identifier.issn0043-1354en_HK
dc.identifier.urihttp://hdl.handle.net/10722/58594-
dc.description.abstractLaboratory experiments were carried out on the kinetics, pathways and mechanisms of electrochemical (EC) degradation of bisphenol A (BPA) on four types of anodes, Ti/boron-doped diamond (BDD), Ti/Sb-SnO2, Ti/RuO2 and Pt. There were considerable differences among the anodes in their effectiveness and performance of BPA electrolysis. BPA was readily destructed at the Ti/Sb-SnO2 and Ti/BDD anodes, the Pt anode had a moderate ability to remove BPA, and the Ti/RuO2 anode was incapable of effectively oxidising BPA. The intermediate products of EC degradation of BPA were detected and quantified by high-performance liquid chromatography (HPLC), and a general BPA degradation pathway was proposed based on the analytical results. It was suggested that {radical dot}OH radicals produced by water electrolysis attacked BPA to form hydroxylated BPA derivatives that were then transformed into one-ring aromatic compounds. These compounds underwent ring breakage, which led to the formation of aliphatic acids that were eventually mineralised by electrolysis to CO2. Compared to the Pt and Ti/RuO2 anodes, the Ti/Sb-SnO2 and Ti/BDD anodes were found to have higher oxygen evolution potentials and higher anodic potentials for BPA electrolysis under the same current condition. However, the stability and durability of the Ti/Sb-SnO2 anode still needs to be greatly improved for actual application. In comparison, with its high durability and good reactivity for organic oxidation, the Ti/BDD anode appears to be the more promising one for the effective EC treatment of BPA and similar endocrine disrupting chemical (EDC) pollutants. © 2009 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/watresen_HK
dc.relation.ispartofWater Researchen_HK
dc.subject.meshChromatography, High Pressure Liquiden_HK
dc.subject.meshElectrochemistry - instrumentationen_HK
dc.subject.meshElectrodesen_HK
dc.subject.meshKineticsen_HK
dc.subject.meshPhenols - chemistryen_HK
dc.titleElectrochemical degradation of bisphenol A on different anodesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0043-1354&volume=43&spage=1968&epage=1976&date=2009&atitle=Electrochemical+degradation+of+bisphenol+A+on+different+anodesen_HK
dc.identifier.emailLi, Xy:xlia@hkucc.hku.hken_HK
dc.identifier.authorityLi, Xy=rp00222en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.watres.2009.01.026en_HK
dc.identifier.pmid19249073-
dc.identifier.scopuseid_2-s2.0-63449096188en_HK
dc.identifier.hkuros164564en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-63449096188&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume43en_HK
dc.identifier.issue7en_HK
dc.identifier.spage1968en_HK
dc.identifier.epage1976en_HK
dc.identifier.eissn1879-2448-
dc.identifier.isiWOS:000265507700019-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridCui, Yh=8963567900en_HK
dc.identifier.scopusauthoridLi, Xy=26642887900en_HK
dc.identifier.scopusauthoridChen, G=7407497867en_HK

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