ORGANOPHOSPHATE ESTERS REMOVAL BY UV/H2 O2 PROCESS MONITORED BY 31P NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Chemical Engineering |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322018000200521 |
Resumo: | Abstract The present work aims to study the photocatalytic degradation of three organophosphate esters considered environmental emerging contaminants by the UV/H2O2 system with the use of 31P NMR spectroscopy to investigative their removal after the treatment. Results demonstrated the efficiency of the oxidation system in removing the esters tris(2-butoxyethyl) phosphate (TBEP), tris(2-chloroethyl) phosphate (TCEP) and tri-butyl phosphate (TBP) from aqueous solutions when they were individually present and mixed. High levels of degradation of these chemicals were achieved, in addition to the good performance of the analytical technique applied in the study, which represents some advantages in comparison with other techniques reported in the literature. An increase in the 31P NMR signal removal could also be observed when the oxidizing agent concentration increases. Decreases in solution acute toxicity were also verified for both TBP and TBEP treated samples when compared with the samples before the treatment. |
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Brazilian Journal of Chemical Engineering |
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ORGANOPHOSPHATE ESTERS REMOVAL BY UV/H2 O2 PROCESS MONITORED BY 31P NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY31P-NMRAdvanced oxidation processesFlame retardantsOrganophosphate estersPhotocatalysisEcotoxicity assessmentAbstract The present work aims to study the photocatalytic degradation of three organophosphate esters considered environmental emerging contaminants by the UV/H2O2 system with the use of 31P NMR spectroscopy to investigative their removal after the treatment. Results demonstrated the efficiency of the oxidation system in removing the esters tris(2-butoxyethyl) phosphate (TBEP), tris(2-chloroethyl) phosphate (TCEP) and tri-butyl phosphate (TBP) from aqueous solutions when they were individually present and mixed. High levels of degradation of these chemicals were achieved, in addition to the good performance of the analytical technique applied in the study, which represents some advantages in comparison with other techniques reported in the literature. An increase in the 31P NMR signal removal could also be observed when the oxidizing agent concentration increases. Decreases in solution acute toxicity were also verified for both TBP and TBEP treated samples when compared with the samples before the treatment.Brazilian Society of Chemical Engineering2018-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322018000200521Brazilian Journal of Chemical Engineering v.35 n.2 2018reponame:Brazilian Journal of Chemical Engineeringinstname:Associação Brasileira de Engenharia Química (ABEQ)instacron:ABEQ10.1590/0104-6632.20180352s20160568info:eu-repo/semantics/openAccessRocha,Otidene R.S daDantas,Renato F.Nascimento Júnior,W. J.Duarte-Coelho,A. C.Silva,R.O.eng2018-09-17T00:00:00Zoai:scielo:S0104-66322018000200521Revistahttps://www.scielo.br/j/bjce/https://old.scielo.br/oai/scielo-oai.phprgiudici@usp.br||rgiudici@usp.br1678-43830104-6632opendoar:2018-09-17T00:00Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)false |
dc.title.none.fl_str_mv |
ORGANOPHOSPHATE ESTERS REMOVAL BY UV/H2 O2 PROCESS MONITORED BY 31P NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY |
title |
ORGANOPHOSPHATE ESTERS REMOVAL BY UV/H2 O2 PROCESS MONITORED BY 31P NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY |
spellingShingle |
ORGANOPHOSPHATE ESTERS REMOVAL BY UV/H2 O2 PROCESS MONITORED BY 31P NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY Rocha,Otidene R.S da 31P-NMR Advanced oxidation processes Flame retardants Organophosphate esters Photocatalysis Ecotoxicity assessment |
title_short |
ORGANOPHOSPHATE ESTERS REMOVAL BY UV/H2 O2 PROCESS MONITORED BY 31P NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY |
title_full |
ORGANOPHOSPHATE ESTERS REMOVAL BY UV/H2 O2 PROCESS MONITORED BY 31P NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY |
title_fullStr |
ORGANOPHOSPHATE ESTERS REMOVAL BY UV/H2 O2 PROCESS MONITORED BY 31P NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY |
title_full_unstemmed |
ORGANOPHOSPHATE ESTERS REMOVAL BY UV/H2 O2 PROCESS MONITORED BY 31P NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY |
title_sort |
ORGANOPHOSPHATE ESTERS REMOVAL BY UV/H2 O2 PROCESS MONITORED BY 31P NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY |
author |
Rocha,Otidene R.S da |
author_facet |
Rocha,Otidene R.S da Dantas,Renato F. Nascimento Júnior,W. J. Duarte-Coelho,A. C. Silva,R.O. |
author_role |
author |
author2 |
Dantas,Renato F. Nascimento Júnior,W. J. Duarte-Coelho,A. C. Silva,R.O. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Rocha,Otidene R.S da Dantas,Renato F. Nascimento Júnior,W. J. Duarte-Coelho,A. C. Silva,R.O. |
dc.subject.por.fl_str_mv |
31P-NMR Advanced oxidation processes Flame retardants Organophosphate esters Photocatalysis Ecotoxicity assessment |
topic |
31P-NMR Advanced oxidation processes Flame retardants Organophosphate esters Photocatalysis Ecotoxicity assessment |
description |
Abstract The present work aims to study the photocatalytic degradation of three organophosphate esters considered environmental emerging contaminants by the UV/H2O2 system with the use of 31P NMR spectroscopy to investigative their removal after the treatment. Results demonstrated the efficiency of the oxidation system in removing the esters tris(2-butoxyethyl) phosphate (TBEP), tris(2-chloroethyl) phosphate (TCEP) and tri-butyl phosphate (TBP) from aqueous solutions when they were individually present and mixed. High levels of degradation of these chemicals were achieved, in addition to the good performance of the analytical technique applied in the study, which represents some advantages in comparison with other techniques reported in the literature. An increase in the 31P NMR signal removal could also be observed when the oxidizing agent concentration increases. Decreases in solution acute toxicity were also verified for both TBP and TBEP treated samples when compared with the samples before the treatment. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-06-01 |
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=S0104-66322018000200521 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322018000200521 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0104-6632.20180352s20160568 |
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 |
Brazilian Society of Chemical Engineering |
publisher.none.fl_str_mv |
Brazilian Society of Chemical Engineering |
dc.source.none.fl_str_mv |
Brazilian Journal of Chemical Engineering v.35 n.2 2018 reponame:Brazilian Journal of Chemical Engineering instname:Associação Brasileira de Engenharia Química (ABEQ) instacron:ABEQ |
instname_str |
Associação Brasileira de Engenharia Química (ABEQ) |
instacron_str |
ABEQ |
institution |
ABEQ |
reponame_str |
Brazilian Journal of Chemical Engineering |
collection |
Brazilian Journal of Chemical Engineering |
repository.name.fl_str_mv |
Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ) |
repository.mail.fl_str_mv |
rgiudici@usp.br||rgiudici@usp.br |
_version_ |
1754213175913349120 |