Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/350755
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dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authorunicampBizzo, Waldir Antônio-
dc.contributor.authorunicampFigueiredo, Renata Andrade-
dc.typeArtigopt_BR
dc.titleCharacterization of printed circuit boards for metal and energy recovery after milling and mechanical separationpt_BR
dc.contributor.authorBizzo, Waldir A.-
dc.contributor.authorFigueiredo, Renata A.-
dc.contributor.authorAndrade, Valdelis F. De-
dc.subjectLixopt_BR
dc.subjectMetais pesadospt_BR
dc.subjectEnergiapt_BR
dc.subject.otherlanguageRefuse and refuse disposalpt_BR
dc.subject.otherlanguageHeavy metalspt_BR
dc.subject.otherlanguageEnergypt_BR
dc.description.abstractThe proper disposal of electrical and electronic waste is currently a concern of researchers and environmental managers not only because of the large volume of such waste generated, but also because of the heavy metals and toxic substances it contains. This study analyzed printed circuit boards (PCBs) from discarded computers to determine their metal content and characterized them as solid waste and fuel. The analysis showed that PCBs consist of approximately 26% metal, made up mainly of copper, lead, aluminum, iron and tin, as well as other heavy metals such as cadmium and nickel. Comparison with the results of other studies indicated that the concentration of precious metals (gold and silver) has declined over time. Analysis of the leachate revealed high concentrations of cadmium and lead, giving the residue the characteristics of hazardous waste. After milling the PCBs, we found that larger amounts of metal were concentrated in smaller fractions, while the lightest fraction, obtained by density separation, had a gross calorific value of approximately 11 MJ/kg, although with a high ash content. Milling followed by density separation proved potentially useful for recovery of metals and energy-rich fractionspt_BR
dc.relation.ispartofMaterialspt_BR
dc.publisher.cityBaselpt_BR
dc.publisher.countrySuiçapt_BR
dc.publisherMDPIpt_BR
dc.date.issued2014-
dc.date.monthofcirculationJunept_BR
dc.language.isoengpt_BR
dc.description.volume7pt_BR
dc.description.issuenumber6pt_BR
dc.description.firstpage4555pt_BR
dc.description.lastpage4566pt_BR
dc.rightsFechadopt_BR
dc.sourceSCOPUSpt_BR
dc.identifier.eissn1996-1944pt_BR
dc.identifier.doi10.3390/ma7064555pt_BR
dc.identifier.urlhttps://www.mdpi.com/1996-1944/7/6/4555pt_BR
dc.description.sponsorshipCONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQpt_BR
dc.description.sponsordocumentnumberNão tempt_BR
dc.date.available2020-10-08T16:50:27Z-
dc.date.accessioned2020-10-08T16:50:27Z-
dc.description.provenanceSubmitted by Susilene Barbosa da Silva (susilene@unicamp.br) on 2020-10-08T16:50:27Z No. of bitstreams: 0. Added 1 bitstream(s) on 2021-01-07T20:40:42Z : No. of bitstreams: 1 2-s2.0-84902578609.pdf: 542878 bytes, checksum: 6785cbf99db6752c3bd82285058de534 (MD5) Bitstreams deleted on 2021-01-08T14:10:46Z: 2-s2.0-84902578609.pdf,. Added 1 bitstream(s) on 2021-01-08T14:14:18Z : No. of bitstreams: 1 2-s2.0-84902578609.pdf: 542878 bytes, checksum: 6785cbf99db6752c3bd82285058de534 (MD5) Bitstreams deleted on 2021-01-13T13:27:26Z: 2-s2.0-84902578609.pdf,. Added 1 bitstream(s) on 2021-01-13T13:29:55Z : No. of bitstreams: 1 2-s2.0-84902578609.pdf: 542878 bytes, checksum: 6785cbf99db6752c3bd82285058de534 (MD5)en
dc.description.provenanceMade available in DSpace on 2020-10-08T16:50:27Z (GMT). No. of bitstreams: 0 Previous issue date: 2014en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/350755-
dc.contributor.departmentDepartamento de Engenharia Térmica e de Fluidospt_BR
dc.contributor.departmentSem informaçãopt_BR
dc.contributor.unidadeFaculdade de Engenharia Mecânicapt_BR
dc.contributor.unidadeFaculdade de Engenharia Mecânicapt_BR
dc.subject.keywordPrinted circuit boardspt_BR
dc.subject.keywordSolid wastept_BR
dc.identifier.source2-s2.0-84902578609pt_BR
dc.creator.orcid0000-0003-1505-4266pt_BR
dc.creator.orcidSem informaçãopt_BR
dc.type.formArtigopt_BR
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