Removal of Beta-Lactams Antibiotics through Zero-Valent Copper Nanoparticles

Detalhes bibliográficos
Autor(a) principal: Oliveira,Lucas M. F.
Data de Publicação: 2018
Outros Autores: Nascimento,Mayra A., Guimarães,Yuri M., Oliveira,André F., Silva,Antônio A., Lopes,Renata P.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532018000801630
Resumo: The removal of the beta-lactam antibiotics (ceftriaxone and cefadroxil) through zero-valent copper nanoparticle (nZVC) was studied in this work. Excellent removal degrees (> 85%) were obtained for both analytes in only 20 min of reaction. Studies were performed in both oxic and anoxic conditions, and in the presence of t-butyl alcohol (TBA), an inhibitor of radicals. The results did not show significant changes. Therefore, the hydroxyl radicals are not the main species responsible for the removal. Total organic carbon cefadroxil analysis indicated a removal of 57% after 180 min of reaction. Studies involving Cu+ indicated that probably these are the principal species responsible for the removal of antibiotics. Kinetic studies have shown that two-phase reaction occurred in the antibiotics removal process and both phases followed pseudo-first order kinetic model. The first mechanism is related to the antibiotics degradation by Cu+ species and the second mechanism is related to the antibiotics adsorption by hydroxides/oxides of Cu2+ species.
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spelling Removal of Beta-Lactams Antibiotics through Zero-Valent Copper Nanoparticleszero-valent coppernanoparticlesbeta-lactamsremovalThe removal of the beta-lactam antibiotics (ceftriaxone and cefadroxil) through zero-valent copper nanoparticle (nZVC) was studied in this work. Excellent removal degrees (> 85%) were obtained for both analytes in only 20 min of reaction. Studies were performed in both oxic and anoxic conditions, and in the presence of t-butyl alcohol (TBA), an inhibitor of radicals. The results did not show significant changes. Therefore, the hydroxyl radicals are not the main species responsible for the removal. Total organic carbon cefadroxil analysis indicated a removal of 57% after 180 min of reaction. Studies involving Cu+ indicated that probably these are the principal species responsible for the removal of antibiotics. Kinetic studies have shown that two-phase reaction occurred in the antibiotics removal process and both phases followed pseudo-first order kinetic model. The first mechanism is related to the antibiotics degradation by Cu+ species and the second mechanism is related to the antibiotics adsorption by hydroxides/oxides of Cu2+ species.Sociedade Brasileira de Química2018-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532018000801630Journal of the Brazilian Chemical Society v.29 n.8 2018reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.21577/0103-5053.20180034info:eu-repo/semantics/openAccessOliveira,Lucas M. F.Nascimento,Mayra A.Guimarães,Yuri M.Oliveira,André F.Silva,Antônio A.Lopes,Renata P.eng2018-07-04T00:00:00Zoai:scielo:S0103-50532018000801630Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2018-07-04T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Removal of Beta-Lactams Antibiotics through Zero-Valent Copper Nanoparticles
title Removal of Beta-Lactams Antibiotics through Zero-Valent Copper Nanoparticles
spellingShingle Removal of Beta-Lactams Antibiotics through Zero-Valent Copper Nanoparticles
Oliveira,Lucas M. F.
zero-valent copper
nanoparticles
beta-lactams
removal
title_short Removal of Beta-Lactams Antibiotics through Zero-Valent Copper Nanoparticles
title_full Removal of Beta-Lactams Antibiotics through Zero-Valent Copper Nanoparticles
title_fullStr Removal of Beta-Lactams Antibiotics through Zero-Valent Copper Nanoparticles
title_full_unstemmed Removal of Beta-Lactams Antibiotics through Zero-Valent Copper Nanoparticles
title_sort Removal of Beta-Lactams Antibiotics through Zero-Valent Copper Nanoparticles
author Oliveira,Lucas M. F.
author_facet Oliveira,Lucas M. F.
Nascimento,Mayra A.
Guimarães,Yuri M.
Oliveira,André F.
Silva,Antônio A.
Lopes,Renata P.
author_role author
author2 Nascimento,Mayra A.
Guimarães,Yuri M.
Oliveira,André F.
Silva,Antônio A.
Lopes,Renata P.
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Oliveira,Lucas M. F.
Nascimento,Mayra A.
Guimarães,Yuri M.
Oliveira,André F.
Silva,Antônio A.
Lopes,Renata P.
dc.subject.por.fl_str_mv zero-valent copper
nanoparticles
beta-lactams
removal
topic zero-valent copper
nanoparticles
beta-lactams
removal
description The removal of the beta-lactam antibiotics (ceftriaxone and cefadroxil) through zero-valent copper nanoparticle (nZVC) was studied in this work. Excellent removal degrees (> 85%) were obtained for both analytes in only 20 min of reaction. Studies were performed in both oxic and anoxic conditions, and in the presence of t-butyl alcohol (TBA), an inhibitor of radicals. The results did not show significant changes. Therefore, the hydroxyl radicals are not the main species responsible for the removal. Total organic carbon cefadroxil analysis indicated a removal of 57% after 180 min of reaction. Studies involving Cu+ indicated that probably these are the principal species responsible for the removal of antibiotics. Kinetic studies have shown that two-phase reaction occurred in the antibiotics removal process and both phases followed pseudo-first order kinetic model. The first mechanism is related to the antibiotics degradation by Cu+ species and the second mechanism is related to the antibiotics adsorption by hydroxides/oxides of Cu2+ species.
publishDate 2018
dc.date.none.fl_str_mv 2018-08-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532018000801630
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532018000801630
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.21577/0103-5053.20180034
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.29 n.8 2018
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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