Publication
Activation of sodium persulfate by magnetic carbon xerogels (CX/CoFe) for the oxidation of bisphenol A: Process variables effects, matrix effects and reaction pathways
| dc.contributor.author | Outsiou, Alexandra | |
| dc.contributor.author | Frontistis, Zacharias | |
| dc.contributor.author | Ribeiro, Rui | |
| dc.contributor.author | Antonopoulou, Maria | |
| dc.contributor.author | Konstantinou, Ioannis | |
| dc.contributor.author | Silva, Adrián | |
| dc.contributor.author | Faria, Joaquim | |
| dc.contributor.author | Gomes, Helder | |
| dc.contributor.author | Mantzavinos, Dionissios | |
| dc.date.accessioned | 2018-01-31T10:00:00Z | |
| dc.date.accessioned | 2018-01-31T15:40:34Z | |
| dc.date.available | 2018-01-31T10:00:00Z | |
| dc.date.available | 2018-01-31T15:40:34Z | |
| dc.date.issued | 2017 | |
| dc.description.abstract | An advanced oxidation process comprising sodium persulfate (SPS) and a novel magnetic carbon xerogel was tested for the degradation of bisphenol A (BPA), a model endocrine-disrupting compound. The catalyst, consisting of interconnected carbon microspheres with embedded iron and cobalt microparticles, was capable of activating persulfate to form sulfate and hydroxyl radicals at ambient conditions. The pseudo-first order degradation rate of BPA in ultrapure water (UPW) was found to increase with (i) increasing catalyst (25–75 mg/L) and SPS (31–250 mg/L) concentrations, (ii) decreasing BPA concentration (285–14,200 μg/L), and (iii) changing pH from alkaline to acidic values (9–3). Besides UPW, tests were conducted in drinking water, treated wastewater, groundwater and surface water; interestingly, the rate in UPW was always lower than in any other matrix containing several organic and inorganic constituents. The effect of natural organic matter (in the form of humic acids) and alcohols was detrimental to BPA degradation owing to the scavenging of radicals. Conversely, chlorides at concentrations greater than 50 mg/L had a positive effect due to the formation and subsequent participation of chlorine-containing radicals. Liquid chromatography time-of-flight mass spectrometry was employed to identify major transformation by-products (TBPs) of BPA degradation in the absence and presence of chlorides; in the latter case, several chlorinated TBPs were detected confirming the role of Cl-related radicals. Based on TBPs, main reaction pathways are proposed. | en_EN |
| dc.description.sponsorship | Z. Frontistis would like to thank the Greek State Scholarships Foundation (IKY) for the financial support of this research through the “IKY Fellowships of Excellence for Postgraduate Studies in Greece e Siemens Programme” in the framework of the Hellenic Republic e Siemens Settlement Agreement. Part of this work was financially supported by: Project POCI-01- 0145-FEDER-006984 - Associate Laboratory LSRE-LCM funded by FEDER through COMPETE2020 e Programa Operacional Competitividade e Internacionalizaç~ao (POCI) - and by national funds through FCT - Fundaçaeo para a Ciencia e a Tecnologia. R.S. Ribeiro acknowledges the FCT individual Ph.D. grant SFRH/BD/94177/2013, with financing from FCT and the European Social Fund (through POPH and QREN). A.M.T. Silva acknowledges the FCT Investigator 2013 Programme (IF/01501/2013), with financing from the European Social Fund and the Human Potential Operational Programme. | |
| dc.description.sponsorship | Z. Frontistis would like to thank the Greek State Scholarships Foundation (IKY) for the financial support of this research through the “IKY Fellowships of Excellence for Postgraduate Studies in Greece e Siemens Programme” in the framework of the Hellenic Republic e Siemens Settlement Agreement. Part of this work was financially supported by: Project POCI-01- 0145-FEDER-006984 - Associate Laboratory LSRE-LCM funded by FEDER through COMPETE2020 e Programa Operacional Competitividade e Internacionalizaç~ao (POCI) - and by national funds through FCT - Fundaçaeo para a Ciencia e a Tecnologia. R.S. Ribeiro acknowledges the FCT individual Ph.D. grant SFRH/BD/94177/2013, with financing from FCT and the European Social Fund (through POPH and QREN). A.M.T. Silva acknowledges the FCT Investigator 2013 Programme (IF/01501/2013), with financing from the European Social Fund and the Human Potential Operational Programme. | |
| dc.description.version | info:eu-repo/semantics/publishedVersion | en_EN |
| dc.identifier.citation | Outsiou, Alexandra; Frontistis, Zacharias; Ribeiro, Rui; Antonopoulou, Maria; Konstantinou, Ioannis K.; Silva, Adrián M.T.; Faria, Joaquim L.; Gomes, Helder; Mantzavinos, Dionissios (2017). Activation of sodium persulfate by magnetic carbon xerogels (CX/CoFe) for the oxidation of bisphenol A: Process variables effects, matrix effects and reaction pathways. Water Research. ISSN 0043-1354. 124, p. 97-107 | en_EN |
| dc.identifier.doi | 10.1016/j.watres.2017.07.046 | en_EN |
| dc.identifier.issn | 0043-1354 | |
| dc.identifier.uri | http://hdl.handle.net/10198/15363 | |
| dc.language.iso | eng | |
| dc.peerreviewed | yes | en_EN |
| dc.subject | Chloride | en_EN |
| dc.subject | Endocrine disruptors | en_EN |
| dc.subject | Fenton-like | en_EN |
| dc.subject | Intermediates | en_EN |
| dc.subject | Operating parameters | en_EN |
| dc.subject | Radicals | en_EN |
| dc.title | Activation of sodium persulfate by magnetic carbon xerogels (CX/CoFe) for the oxidation of bisphenol A: Process variables effects, matrix effects and reaction pathways | en_EN |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.awardURI | info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F94177%2F2013/PT | |
| oaire.fundingStream | SFRH | |
| person.familyName | Gomes | |
| person.givenName | Helder | |
| person.identifier.ciencia-id | 6218-1E19-13EE | |
| person.identifier.orcid | 0000-0001-6898-2408 | |
| project.funder.identifier | http://doi.org/10.13039/501100001871 | |
| project.funder.name | Fundação para a Ciência e a Tecnologia | |
| rcaap.rights | openAccess | en_EN |
| rcaap.type | article | en_EN |
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