Natural Persulfate Activation for Anthracene Remediation in Tropical Environments

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dc.citation.issue4
dc.citation.volume228
dc.contributor.authorFerreira, Ieda D.
dc.contributor.authorPrieto, Tatiana
dc.contributor.authorFreitas, Juliana G.
dc.contributor.authorThomson, Neil R.
dc.contributor.authorNantes, Iseli L.
dc.contributor.authorBechara, Etelvino J. H. [UNIFESP]
dc.coverageDordrecht
dc.date.accessioned2020-07-17T14:02:27Z
dc.date.available2020-07-17T14:02:27Z
dc.date.issued2017
dc.description.abstractIn situ chemical oxidation using persulfate is one alternative to remediate polycyclic aromatic hydrocarbon-contaminated soilen
dc.description.abstracthowever, oxidation can lead to the formation of toxic and persistent by-products, and treatment efficiency can be dependent on environmental conditions. Temperature and soil matrix properties can dictate reaction rates and pathways, promoting oxidant activation or scavenging the free radicals generated. This research investigated the ability of persulfate to degrade anthracene in tropical environmental conditions. Batch tests were conducted for various persulfate systems (naturally and chelated-iron-activated), with an Oxisol contaminated with anthracene. Electron paramagnetic resonance (EPR) was used to identify free radicals formed. Naturally activated persulfate degraded more than 96% of the anthracene and its byproduct anthraquinone after 90 days, considered more toxic and persistent, while the chelated-iron-activated persulfate system used was able to remove 70% of the anthracene. EPR measurements showed the coexistence of SO4 center dot- and (OH)-O-center dot radicals. Sulfate radicals were formed by thermal activation at ambient temperatures (mean of 23.7 degrees C), and (OH)-O-center dot was formed by propagation reactions and hydrolysis in acidic conditions that lead to peroxide formation. In the naturally activated system, anthracene degradation was observed and SO4 center dot- radicals were abundant, indicating that this treatment system can be effective in a typical tropical soil environment.en
dc.description.affiliationUniv Fed Sao Paulo, Rua Sao Nicolau 210, BR-09913030 Diadema, SP, Brazil
dc.description.affiliationUniv Fed ABC, Av Estados 5001, BR-09210580 Santo Andre, SP, Brazil
dc.description.affiliationUniv Waterloo, Dept Civil & Environm Engn, 200 Univ Ave W, Waterloo, ON N2L 3G1, Canada
dc.description.affiliationUniv Sao Paulo, Av Prof Lineu Prestos 748, BR-05508000 Sao Paulo, SP, Brazil
dc.description.affiliationUnifespUniv Fed Sao Paulo, Rua Sao Nicolau 210, BR-09913030 Diadema, SP, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipConselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
dc.description.sponsorshipFundacao de Amparo a Pesquisa do Estado de Sao Paulo
dc.description.sponsorshipIDCNPq: 401730/2012-3
dc.description.sponsorshipIDFAPESP: 2011/12158-2
dc.description.sponsorshipIDFAPESP: 06/56530-4
dc.format.extent-
dc.identifierhttp://dx.doi.org/10.1007/s11270-017-3322-8
dc.identifier.citationWater Air And Soil Pollution. Dordrecht, v. 228, n. 4, p. -, 2017.
dc.identifier.doi10.1007/s11270-017-3322-8
dc.identifier.issn0049-6979
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/54818
dc.identifier.wosWOS:000399872600025
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofWater Air And Soil Pollution
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectChemical oxidationen
dc.subjectPersulfateen
dc.subjectFree radicalsen
dc.subjectAnthraceneen
dc.subjectTropical soilsen
dc.titleNatural Persulfate Activation for Anthracene Remediation in Tropical Environmentsen
dc.typeinfo:eu-repo/semantics/article
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