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dc.contributor.authorMartins, Thamiris Auxiliadora Gonçalves
dc.contributor.authorFalconi, Isabela Brandolis Alves
dc.contributor.authorPavoski, Giovani
dc.contributor.authorMoraes, Viviane Tavares de
dc.contributor.authorGalluzzi Baltazar, Marcela dos Passos
dc.contributor.authorEspinosa, Denise Crocce Romano
dc.date.accessioned2024-10-15T21:36:53Z
dc.date.available2024-10-15T21:36:53Z
dc.date.issued2021
dc.identifier.issn2213-3437
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85117387719&doi=10.1016%2fj.jece.2021.106576&partnerID=40&md5=fde3a24fd09d69ab3ab758d6c713f098
dc.identifier.urihttps://repositorio.maua.br/handle/MAUA/1395
dc.description.abstractThe disposal of solid waste containing toxic metals in the composition is a problem of environmental and human contamination. The amount of waste as printed circuit boards has been increasing year by year. New processes that aim at recycling and subsequent application implementing a circular economy of this waste have been gaining importance. This study proposes the printed circuit boards characterization for the copper recycling by acid leaching in two steps, green synthesis of copper nanoparticles using ascorbic acid (vitamin C), and later application of nanoparticles into surfactant degradation through the Fenton-like process. Acid leaching proved a possible methodology for recycling copper, obtaining over 90% recovery. The printed circuit boards show to be a copper secondary source with a weight percentage of about 26 and recovery of 97% in two leaching stages. The synthesis of CuNPs was inferred through UV–Vis with absorption peak in 585 nm and modification of the coloration over time of solutions to dark brown. The syntheses were performed at 70 °C, 80 °C, and 90 °C and in 0.17, 0.5, 0.83, 1, 2, and 3 h, and the stability of copper nanoparticles was verified in 168, 720, and 960 h after syntheses. Stable nanoparticles were produced with different diameters, and they were applied as a catalyst in the Fenton reaction to degrade an amine-based surfactant used in the mining industry. The total carbon degradation found was 57%. It was possible to observe that the recycling of printed circuit boards is strategic to obtain copper from a secondary source, and the synthesis of copper nanoparticles could be used as a product to applicate in the circular economy using the Fenton process. © 2021 Elsevier Ltden
dc.description.sponsorshipFAPESP
dc.description.sponsorshipCAPES
dc.description.sponsorshipCNPq
dc.description.sponsorshipUSP
dc.languageInglêspt_BR
dc.publisherElsevier Ltden
dc.relation.ispartofJournal of Environmental Chemical Engineering
dc.rightsAcesso Restrito
dc.sourceScopusen
dc.subjectCopper nanoparticlesen
dc.subjectElectronic wasteen
dc.subjectFenton processen
dc.subjectGreen synthesisen
dc.subjectRecyclingen
dc.subjectAscorbic aciden
dc.subjectBiosynthesisen
dc.subjectCopperen
dc.subjectElectronic Wasteen
dc.subjectLeachingen
dc.subjectOxidationen
dc.subjectPrinted circuit boardsen
dc.subjectSurface active agentsen
dc.subjectTiming circuitsen
dc.subjectWaste disposalen
dc.subjectAcid leachingen
dc.subjectAscorbic acids (vitamin C)en
dc.subjectCircular economyen
dc.subjectElectronics wastesen
dc.subjectFenton's processen
dc.subjectPrinted circuit board characterizationen
dc.subjectSecondary sourcesen
dc.subjectToxic metalsen
dc.subjectMetal nanoparticlesen
dc.titleGreen synthesis, characterization, and application of copper nanoparticles obtained from printed circuit boards to degrade mining surfactant by Fenton processen
dc.typeArtigo de Periódicopt_BR
dc.identifier.doi10.1016/j.jece.2021.106576
dc.description.affiliationDepartment of Chemical Engineering, Polytechnic School of the University of Sao Paulo (USP), Lago St., No. 250, Sao Paulo, CEP 05508-080, SP, Brazil
dc.description.affiliationMaua Institute of Technology, Praça Maua, 1 – Maua, Sao Caetano do Sul, CEP 09580-900, São Paulo, Brazil
dc.identifier.scopus2-s2.0-85117387719
dc.citation.issue6
dc.citation.volume9


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