Sonochemical and hydrodynamic cavitation reactors for laccase/hydrogen peroxide cotton bleaching

Detalhes bibliográficos
Autor(a) principal: Gonçalves, Idalina
Data de Publicação: 2014
Outros Autores: Martins, Madalena A., Loureiro, Ana, Gomes, A. C., Paulo, Artur Cavaco, Silva, Carla Manuela Pereira Marinho da
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/26648
Resumo: Article in press
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spelling Sonochemical and hydrodynamic cavitation reactors for laccase/hydrogen peroxide cotton bleachingHomogenizationCavitationHydroxyl radicalsBleachingSonicationScience & TechnologyArticle in pressThe main goal of this work is to develop a novel and environmental-friendly technology for cotton bleaching with reduced processing costs. This work exploits a combined laccase–hydrogen peroxide process assisted by ultrasound. For this purpose, specific reactors were studied, namely ultrasonic power generator type K8 (850 kHz) and ultrasonic bath equipment Ultrasonic cleaner USC600TH (45 kHz). The optimal operating conditions for bleaching were chosen considering the highest levels of hydroxyl radical production and the lowest energy input. The capacity to produce hydroxyl radicals by hydrodynamic cavitation was also assessed in two homogenizers, EmulsiFlex®-C3 and APV-2000. Laccase nanoemulsions were produced by high pressure homogenization using BSA (bovine serum albumin) as emulsifier. The bleaching efficiency of these formulations was tested and the results showed higher whiteness values when compared to free laccase. The combination of laccase–hydrogen peroxide process with ultrasound energy produced higher whiteness levels than those obtained by conventional methods. The amount of hydrogen peroxide was reduced 50% as well as the energy consumption in terms of temperature (reduction of 40 °C) and operating time (reduction of 90 min).The author Idalina Goncalves would like to acknowledge the Cottonbleach project (FP7-SME-2008-2; 243529-2-cottonbleach) for the funding. The author Carla Silva would like to acknowledge FCT - Fundacao para a Ciencia e a Tecnologia for the grant SFRH/BPD/46515/2008.ElsevierUniversidade do MinhoGonçalves, IdalinaMartins, Madalena A.Loureiro, AnaGomes, A. C.Paulo, Artur CavacoSilva, Carla Manuela Pereira Marinho da20142014-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/26648eng1350-417710.1016/j.ultsonch.2013.08.00624035719info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:39:06Zoai:repositorium.sdum.uminho.pt:1822/26648Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:35:39.668304Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Sonochemical and hydrodynamic cavitation reactors for laccase/hydrogen peroxide cotton bleaching
title Sonochemical and hydrodynamic cavitation reactors for laccase/hydrogen peroxide cotton bleaching
spellingShingle Sonochemical and hydrodynamic cavitation reactors for laccase/hydrogen peroxide cotton bleaching
Gonçalves, Idalina
Homogenization
Cavitation
Hydroxyl radicals
Bleaching
Sonication
Science & Technology
title_short Sonochemical and hydrodynamic cavitation reactors for laccase/hydrogen peroxide cotton bleaching
title_full Sonochemical and hydrodynamic cavitation reactors for laccase/hydrogen peroxide cotton bleaching
title_fullStr Sonochemical and hydrodynamic cavitation reactors for laccase/hydrogen peroxide cotton bleaching
title_full_unstemmed Sonochemical and hydrodynamic cavitation reactors for laccase/hydrogen peroxide cotton bleaching
title_sort Sonochemical and hydrodynamic cavitation reactors for laccase/hydrogen peroxide cotton bleaching
author Gonçalves, Idalina
author_facet Gonçalves, Idalina
Martins, Madalena A.
Loureiro, Ana
Gomes, A. C.
Paulo, Artur Cavaco
Silva, Carla Manuela Pereira Marinho da
author_role author
author2 Martins, Madalena A.
Loureiro, Ana
Gomes, A. C.
Paulo, Artur Cavaco
Silva, Carla Manuela Pereira Marinho da
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Gonçalves, Idalina
Martins, Madalena A.
Loureiro, Ana
Gomes, A. C.
Paulo, Artur Cavaco
Silva, Carla Manuela Pereira Marinho da
dc.subject.por.fl_str_mv Homogenization
Cavitation
Hydroxyl radicals
Bleaching
Sonication
Science & Technology
topic Homogenization
Cavitation
Hydroxyl radicals
Bleaching
Sonication
Science & Technology
description Article in press
publishDate 2014
dc.date.none.fl_str_mv 2014
2014-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/26648
url http://hdl.handle.net/1822/26648
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1350-4177
10.1016/j.ultsonch.2013.08.006
24035719
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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