The role of phenols from bagasse vacuum pyrolysis bio-oil in cupper sulfured ore flotation
Autor(a) principal: | |
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Data de Publicação: | 2008 |
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=S0104-66322008000400009 |
Resumo: | Vacuum pyrolysis bagasse bio-oil collected in a series of sequential fractions was analyzed for total percentage of phenols and levoglucosan components. It was established that the ratio total phenols- to-levoglucosan could be used as an indicator of the performance of alkaline solutions of bio-oil fractions (SABO) when they are used as foaming agents to benefit flotation of sulfured cupper minerals. A high total phenol-to-levoglucosan ratio results in high percentages of Cu in cupper flotation concentrates, L Cu. A closer look at the role of individual phenols reveals that p-cresol is the main phenol, although not the only one, responsible for the observed behavior. Additionally it was noted that rather high doses of these foaming agents must be used to obtain desirable results in flotation processes. A production cost estimate allows consideration of SABO as an alternative to others commercial foaming agents, especially if an optimization study reduces doses of SABO. |
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Brazilian Journal of Chemical Engineering |
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The role of phenols from bagasse vacuum pyrolysis bio-oil in cupper sulfured ore flotationPyrolysisBio-oilPhenolsCu flotationVacuum pyrolysis bagasse bio-oil collected in a series of sequential fractions was analyzed for total percentage of phenols and levoglucosan components. It was established that the ratio total phenols- to-levoglucosan could be used as an indicator of the performance of alkaline solutions of bio-oil fractions (SABO) when they are used as foaming agents to benefit flotation of sulfured cupper minerals. A high total phenol-to-levoglucosan ratio results in high percentages of Cu in cupper flotation concentrates, L Cu. A closer look at the role of individual phenols reveals that p-cresol is the main phenol, although not the only one, responsible for the observed behavior. Additionally it was noted that rather high doses of these foaming agents must be used to obtain desirable results in flotation processes. A production cost estimate allows consideration of SABO as an alternative to others commercial foaming agents, especially if an optimization study reduces doses of SABO.Brazilian Society of Chemical Engineering2008-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322008000400009Brazilian Journal of Chemical Engineering v.25 n.4 2008reponame:Brazilian Journal of Chemical Engineeringinstname:Associação Brasileira de Engenharia Química (ABEQ)instacron:ABEQ10.1590/S0104-66322008000400009info:eu-repo/semantics/openAccessBrossard,L. E.Beraldo,A. L.Cortez,L. A. B.Brossard Jr,L. E.Maury,E. D.Brossard,C. O.eng2008-11-24T00:00:00Zoai:scielo:S0104-66322008000400009Revistahttps://www.scielo.br/j/bjce/https://old.scielo.br/oai/scielo-oai.phprgiudici@usp.br||rgiudici@usp.br1678-43830104-6632opendoar:2008-11-24T00:00Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)false |
dc.title.none.fl_str_mv |
The role of phenols from bagasse vacuum pyrolysis bio-oil in cupper sulfured ore flotation |
title |
The role of phenols from bagasse vacuum pyrolysis bio-oil in cupper sulfured ore flotation |
spellingShingle |
The role of phenols from bagasse vacuum pyrolysis bio-oil in cupper sulfured ore flotation Brossard,L. E. Pyrolysis Bio-oil Phenols Cu flotation |
title_short |
The role of phenols from bagasse vacuum pyrolysis bio-oil in cupper sulfured ore flotation |
title_full |
The role of phenols from bagasse vacuum pyrolysis bio-oil in cupper sulfured ore flotation |
title_fullStr |
The role of phenols from bagasse vacuum pyrolysis bio-oil in cupper sulfured ore flotation |
title_full_unstemmed |
The role of phenols from bagasse vacuum pyrolysis bio-oil in cupper sulfured ore flotation |
title_sort |
The role of phenols from bagasse vacuum pyrolysis bio-oil in cupper sulfured ore flotation |
author |
Brossard,L. E. |
author_facet |
Brossard,L. E. Beraldo,A. L. Cortez,L. A. B. Brossard Jr,L. E. Maury,E. D. Brossard,C. O. |
author_role |
author |
author2 |
Beraldo,A. L. Cortez,L. A. B. Brossard Jr,L. E. Maury,E. D. Brossard,C. O. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Brossard,L. E. Beraldo,A. L. Cortez,L. A. B. Brossard Jr,L. E. Maury,E. D. Brossard,C. O. |
dc.subject.por.fl_str_mv |
Pyrolysis Bio-oil Phenols Cu flotation |
topic |
Pyrolysis Bio-oil Phenols Cu flotation |
description |
Vacuum pyrolysis bagasse bio-oil collected in a series of sequential fractions was analyzed for total percentage of phenols and levoglucosan components. It was established that the ratio total phenols- to-levoglucosan could be used as an indicator of the performance of alkaline solutions of bio-oil fractions (SABO) when they are used as foaming agents to benefit flotation of sulfured cupper minerals. A high total phenol-to-levoglucosan ratio results in high percentages of Cu in cupper flotation concentrates, L Cu. A closer look at the role of individual phenols reveals that p-cresol is the main phenol, although not the only one, responsible for the observed behavior. Additionally it was noted that rather high doses of these foaming agents must be used to obtain desirable results in flotation processes. A production cost estimate allows consideration of SABO as an alternative to others commercial foaming agents, especially if an optimization study reduces doses of SABO. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-12-01 |
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=S0104-66322008000400009 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322008000400009 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0104-66322008000400009 |
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.25 n.4 2008 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_ |
1754213172701560832 |