Adsorção de metais (Au, Cu e Ni) presentes em lixiviados de contactores de telefones celulares

Detalhes bibliográficos
Ano de defesa: 2016
Autor(a) principal: Zazycki, Maria Amélia lattes
Orientador(a): Dotto, Guilherme Luiz lattes
Banca de defesa: Tanabe, Eduardo Hiromitsu lattes, Pinto, Luiz Antonio de Almeida lattes
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal de Santa Maria
Programa de Pós-Graduação: Programa de Pós-Graduação em Engenharia Química
Departamento: Engenharia Química
País: BR
Palavras-chave em Português:
Adsorção
Contactores
Lixiviados
Telefones celulares
Metais valiosos
Palavras-chave em Inglês:
Adsorption
Contactors
Leachates
Mobile phones
Valuable metals
Área do conhecimento CNPq:
CNPQ::ENGENHARIAS
Link de acesso: http://repositorio.ufsm.br/handle/1/8805
Resumo: In this work, chitin (CTN), chitosan (CTS) and activated carbon (AC) were used as adsorbents to recover metals (Au, Ni and Cu) from leachates of mobile phone wastes. The mobile phone wastes (contactors) were collected and characterized. The metals were extracted by thiourea leaching. The adsorption of metals from the leachates was studied according to the kinetic and equilibrium viewpoints. It was found that the contactors were composed by Au, Ni, Cu and Sn. The thiourea leaching provided extraction percentages of 68.6% for Au, 22.1% for Ni and 2.8% for Cu. Sn was not extracted. The leachate presented 17.5 mg L-1 of Au, 324.9 mg L-1 of Ni and 573.1 mg L-1 of Cu. The adsorption was fast, being the maximum time to attain the equilibrium of 120 min. The adsorption of Au, Ni and Cu onto CTN and AC followed the Langmuir model, while, the adsorption of these metals onto CTS followed the Freundlich model. Removal percentages higher than 95% were obtained for all metals, depending of the type and amount of adsorbent. It was demonstrated that the adsorption onto chitin, chitosan and activated carbon can be an alternative to recover valuable metals and purify the leachates of mobile phone wastes.
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spelling 2016-07-272016-07-272016-04-06ZAZYCKI, Maria Amélia. ADSORPTION OF METALS (Au, Ni e Cu) PRESENTS IN LEACHATES OF CONTACTORS OF MOBILE PHONE. 2016. 92 f. Dissertação (Mestrado em Engenharia) - Universidade Federal de Santa Maria, Santa Maria, 2016.http://repositorio.ufsm.br/handle/1/8805In this work, chitin (CTN), chitosan (CTS) and activated carbon (AC) were used as adsorbents to recover metals (Au, Ni and Cu) from leachates of mobile phone wastes. The mobile phone wastes (contactors) were collected and characterized. The metals were extracted by thiourea leaching. The adsorption of metals from the leachates was studied according to the kinetic and equilibrium viewpoints. It was found that the contactors were composed by Au, Ni, Cu and Sn. The thiourea leaching provided extraction percentages of 68.6% for Au, 22.1% for Ni and 2.8% for Cu. Sn was not extracted. The leachate presented 17.5 mg L-1 of Au, 324.9 mg L-1 of Ni and 573.1 mg L-1 of Cu. The adsorption was fast, being the maximum time to attain the equilibrium of 120 min. The adsorption of Au, Ni and Cu onto CTN and AC followed the Langmuir model, while, the adsorption of these metals onto CTS followed the Freundlich model. Removal percentages higher than 95% were obtained for all metals, depending of the type and amount of adsorbent. It was demonstrated that the adsorption onto chitin, chitosan and activated carbon can be an alternative to recover valuable metals and purify the leachates of mobile phone wastes.Neste trabalho, quitina, quitosana e carvão ativado foram utilizados como adsorventes para recuperar metais (Au, Ni e Cu) de lixiviados de contactores de telefones celulares. Os contactores foram coletados e caracterizados. Os metais foram extraídos por lixiviação com tioureia. A adsorção dos metais dos lixiviados foi estudada de acordo com a cinética e o equilíbrio. Verificou-se que os contactores são compostos por Au, Ni, Cu e Sn. A lixiviação com tioureia forneceu percentuais de extração de 68,6% para o Au, 22,1% para o Ni e 2,8% para o cobre. O Sn não foi extraído. O lixiviado apresentou 17,5 mg L-1 de Au, 324,9 mg L-1 de Ni e 573,1 mg L-1 de Cu. A adsorção foi rápida, sendo o tempo máximo para alcançar o equilíbrio de 120 min. A adsorção de Au, Ni e Cu sobre quitina e carvão ativado seguiu o modelo de Langmuir, enquanto que, a adsorção destes metais com a quitosana seguiu o modelo de Freundlich. Percentuais de remoção superiores a 95% foram obtidos para todos os metais, dependendo do tipo e da quantidade de adsorvente. Demonstrou-se que a adsorção em quitina, quitosana e carvão ativado pode ser uma alternativa para recuperar metais valiosos e purificar os lixiviados de resíduos de telefones celulares.application/pdfporUniversidade Federal de Santa MariaPrograma de Pós-Graduação em Engenharia QuímicaUFSMBREngenharia QuímicaAdsorçãoContactoresLixiviadosTelefones celularesMetais valiososAdsorptionContactorsLeachatesMobile phonesValuable metalsCNPQ::ENGENHARIASAdsorção de metais (Au, Cu e Ni) presentes em lixiviados de contactores de telefones celularesAdsorption of metals (Au, Ni e Cu) presents in leachates of contactors of mobile phoneinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisDotto, Guilherme Luizhttp://lattes.cnpq.br/5412544199323879Tanabe, Eduardo Hiromitsuhttp://lattes.cnpq.br/9778700143605069Pinto, Luiz Antonio de Almeidahttp://lattes.cnpq.br/4632325487404310http://lattes.cnpq.br/3164682682885885Zazycki, Maria Amélia300000000009400500300300300d27c00eb-4f6c-4070-b566-60f99dd5565862fa75a8-91a0-4f6e-8e96-9fb746a862f7a916168a-3a02-4d69-a293-01e2059dd67b818e9d18-233b-4a5b-beac-b78397a97737info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações do UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALDIS_PPGEQ_2016_ZAZYCKI_MARIA.pdfDissertação de Mestradoapplication/pdf3490225http://repositorio.ufsm.br/bitstream/1/8805/1/DIS_PPGEQ_2016_ZAZYCKI_MARIA.pdf2ae65c80accc9a582491409cb6e0f8c3MD51TEXTZAZYCKI, MARIA AMELIA.pdf.txtZAZYCKI, MARIA AMELIA.pdf.txtExtracted texttext/plain125945http://repositorio.ufsm.br/bitstream/1/8805/2/ZAZYCKI%2c%20MARIA%20AMELIA.pdf.txt0999940af7435a33471524f507c6fb02MD52DIS_PPGEQ_2016_ZAZYCKI_MARIA.pdf.txtDIS_PPGEQ_2016_ZAZYCKI_MARIA.pdf.txtExtracted texttext/plain125945http://repositorio.ufsm.br/bitstream/1/8805/4/DIS_PPGEQ_2016_ZAZYCKI_MARIA.pdf.txt0999940af7435a33471524f507c6fb02MD54THUMBNAILZAZYCKI, MARIA AMELIA.pdf.jpgZAZYCKI, MARIA AMELIA.pdf.jpgIM Thumbnailimage/jpeg4130http://repositorio.ufsm.br/bitstream/1/8805/3/ZAZYCKI%2c%20MARIA%20AMELIA.pdf.jpg6c85461aab374b6f6d5132c173e047d7MD53DIS_PPGEQ_2016_ZAZYCKI_MARIA.pdf.jpgDIS_PPGEQ_2016_ZAZYCKI_MARIA.pdf.jpgIM Thumbnailimage/jpeg4130http://repositorio.ufsm.br/bitstream/1/8805/5/DIS_PPGEQ_2016_ZAZYCKI_MARIA.pdf.jpg6c85461aab374b6f6d5132c173e047d7MD551/88052022-05-02 12:18:48.513oai:repositorio.ufsm.br:1/8805Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2022-05-02T15:18:48Biblioteca Digital de Teses e Dissertações do UFSM - Universidade Federal de Santa Maria (UFSM)false
dc.title.por.fl_str_mv Adsorção de metais (Au, Cu e Ni) presentes em lixiviados de contactores de telefones celulares
dc.title.alternative.eng.fl_str_mv Adsorption of metals (Au, Ni e Cu) presents in leachates of contactors of mobile phone
title Adsorção de metais (Au, Cu e Ni) presentes em lixiviados de contactores de telefones celulares
spellingShingle Adsorção de metais (Au, Cu e Ni) presentes em lixiviados de contactores de telefones celulares
Zazycki, Maria Amélia
Adsorção
Contactores
Lixiviados
Telefones celulares
Metais valiosos
Adsorption
Contactors
Leachates
Mobile phones
Valuable metals
CNPQ::ENGENHARIAS
title_short Adsorção de metais (Au, Cu e Ni) presentes em lixiviados de contactores de telefones celulares
title_full Adsorção de metais (Au, Cu e Ni) presentes em lixiviados de contactores de telefones celulares
title_fullStr Adsorção de metais (Au, Cu e Ni) presentes em lixiviados de contactores de telefones celulares
title_full_unstemmed Adsorção de metais (Au, Cu e Ni) presentes em lixiviados de contactores de telefones celulares
title_sort Adsorção de metais (Au, Cu e Ni) presentes em lixiviados de contactores de telefones celulares
author Zazycki, Maria Amélia
author_facet Zazycki, Maria Amélia
author_role author
dc.contributor.advisor1.fl_str_mv Dotto, Guilherme Luiz
dc.contributor.advisor1Lattes.fl_str_mv http://lattes.cnpq.br/5412544199323879
dc.contributor.referee1.fl_str_mv Tanabe, Eduardo Hiromitsu
dc.contributor.referee1Lattes.fl_str_mv http://lattes.cnpq.br/9778700143605069
dc.contributor.referee2.fl_str_mv Pinto, Luiz Antonio de Almeida
dc.contributor.referee2Lattes.fl_str_mv http://lattes.cnpq.br/4632325487404310
dc.contributor.authorLattes.fl_str_mv http://lattes.cnpq.br/3164682682885885
dc.contributor.author.fl_str_mv Zazycki, Maria Amélia
contributor_str_mv Dotto, Guilherme Luiz
Tanabe, Eduardo Hiromitsu
Pinto, Luiz Antonio de Almeida
dc.subject.por.fl_str_mv Adsorção
Contactores
Lixiviados
Telefones celulares
Metais valiosos
topic Adsorção
Contactores
Lixiviados
Telefones celulares
Metais valiosos
Adsorption
Contactors
Leachates
Mobile phones
Valuable metals
CNPQ::ENGENHARIAS
dc.subject.eng.fl_str_mv Adsorption
Contactors
Leachates
Mobile phones
Valuable metals
dc.subject.cnpq.fl_str_mv CNPQ::ENGENHARIAS
description In this work, chitin (CTN), chitosan (CTS) and activated carbon (AC) were used as adsorbents to recover metals (Au, Ni and Cu) from leachates of mobile phone wastes. The mobile phone wastes (contactors) were collected and characterized. The metals were extracted by thiourea leaching. The adsorption of metals from the leachates was studied according to the kinetic and equilibrium viewpoints. It was found that the contactors were composed by Au, Ni, Cu and Sn. The thiourea leaching provided extraction percentages of 68.6% for Au, 22.1% for Ni and 2.8% for Cu. Sn was not extracted. The leachate presented 17.5 mg L-1 of Au, 324.9 mg L-1 of Ni and 573.1 mg L-1 of Cu. The adsorption was fast, being the maximum time to attain the equilibrium of 120 min. The adsorption of Au, Ni and Cu onto CTN and AC followed the Langmuir model, while, the adsorption of these metals onto CTS followed the Freundlich model. Removal percentages higher than 95% were obtained for all metals, depending of the type and amount of adsorbent. It was demonstrated that the adsorption onto chitin, chitosan and activated carbon can be an alternative to recover valuable metals and purify the leachates of mobile phone wastes.
publishDate 2016
dc.date.accessioned.fl_str_mv 2016-07-27
dc.date.available.fl_str_mv 2016-07-27
dc.date.issued.fl_str_mv 2016-04-06
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.citation.fl_str_mv ZAZYCKI, Maria Amélia. ADSORPTION OF METALS (Au, Ni e Cu) PRESENTS IN LEACHATES OF CONTACTORS OF MOBILE PHONE. 2016. 92 f. Dissertação (Mestrado em Engenharia) - Universidade Federal de Santa Maria, Santa Maria, 2016.
dc.identifier.uri.fl_str_mv http://repositorio.ufsm.br/handle/1/8805
identifier_str_mv ZAZYCKI, Maria Amélia. ADSORPTION OF METALS (Au, Ni e Cu) PRESENTS IN LEACHATES OF CONTACTORS OF MOBILE PHONE. 2016. 92 f. Dissertação (Mestrado em Engenharia) - Universidade Federal de Santa Maria, Santa Maria, 2016.
url http://repositorio.ufsm.br/handle/1/8805
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dc.publisher.none.fl_str_mv Universidade Federal de Santa Maria
dc.publisher.program.fl_str_mv Programa de Pós-Graduação em Engenharia Química
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dc.publisher.country.fl_str_mv BR
dc.publisher.department.fl_str_mv Engenharia Química
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