Recycling of textile bleaching effluents for dyeing using immobilized catalase

Detalhes bibliográficos
Autor(a) principal: Costa, Silgia
Data de Publicação: 2002
Outros Autores: Tzanov, Tzanko, Carneiro, Ana Filipa Gonçalves da Costa, Gübitz, Georg M., Paulo, Artur Cavaco
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/2620
Resumo: Catalase was immobilized on alumina carrier and crosslinked with glutaraldehyde. Storing stability, temperature and pH profiles of enzyme activity were studied in a column reactor with recirculation and in a batch stirred-tank reactor. The immobilized enzyme retained 44% of its activity at pH 11, 30 °C and 90% at 80 °C, pH 7. The half-life time of the immobilized catalase was increased to 2 h at pH 12, and 60 °C. Acceptable results were achieved when the residual water from the washing process of H2O2-bleached fabrics was treated with the immobilized enzyme and then reused for dyeing.
id RCAP_940dce8b84afd63dfeb039098f2f3688
oai_identifier_str oai:repositorium.sdum.uminho.pt:1822/2620
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Recycling of textile bleaching effluents for dyeing using immobilized catalasecatalase immobilizationenzyme stabilizationH2O2textile dyeingH O 2 2Science & TechnologyCatalase was immobilized on alumina carrier and crosslinked with glutaraldehyde. Storing stability, temperature and pH profiles of enzyme activity were studied in a column reactor with recirculation and in a batch stirred-tank reactor. The immobilized enzyme retained 44% of its activity at pH 11, 30 °C and 90% at 80 °C, pH 7. The half-life time of the immobilized catalase was increased to 2 h at pH 12, and 60 °C. Acceptable results were achieved when the residual water from the washing process of H2O2-bleached fabrics was treated with the immobilized enzyme and then reused for dyeing.KluwerUniversidade do MinhoCosta, SilgiaTzanov, TzankoCarneiro, Ana Filipa Gonçalves da CostaGübitz, Georg M.Paulo, Artur Cavaco2002-022002-02-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/2620eng"Biotechnology letters". ISSN 0141-5492. 24:3 (Febr.2002) 173–176.0141-549210.1023/A:1014136703369info: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:RCAAP2023-07-21T12:42:47Zoai:repositorium.sdum.uminho.pt:1822/2620Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:40:06.801333Repositório 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 Recycling of textile bleaching effluents for dyeing using immobilized catalase
title Recycling of textile bleaching effluents for dyeing using immobilized catalase
spellingShingle Recycling of textile bleaching effluents for dyeing using immobilized catalase
Costa, Silgia
catalase immobilization
enzyme stabilization
H2O2
textile dyeing
H O 2 2
Science & Technology
title_short Recycling of textile bleaching effluents for dyeing using immobilized catalase
title_full Recycling of textile bleaching effluents for dyeing using immobilized catalase
title_fullStr Recycling of textile bleaching effluents for dyeing using immobilized catalase
title_full_unstemmed Recycling of textile bleaching effluents for dyeing using immobilized catalase
title_sort Recycling of textile bleaching effluents for dyeing using immobilized catalase
author Costa, Silgia
author_facet Costa, Silgia
Tzanov, Tzanko
Carneiro, Ana Filipa Gonçalves da Costa
Gübitz, Georg M.
Paulo, Artur Cavaco
author_role author
author2 Tzanov, Tzanko
Carneiro, Ana Filipa Gonçalves da Costa
Gübitz, Georg M.
Paulo, Artur Cavaco
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Costa, Silgia
Tzanov, Tzanko
Carneiro, Ana Filipa Gonçalves da Costa
Gübitz, Georg M.
Paulo, Artur Cavaco
dc.subject.por.fl_str_mv catalase immobilization
enzyme stabilization
H2O2
textile dyeing
H O 2 2
Science & Technology
topic catalase immobilization
enzyme stabilization
H2O2
textile dyeing
H O 2 2
Science & Technology
description Catalase was immobilized on alumina carrier and crosslinked with glutaraldehyde. Storing stability, temperature and pH profiles of enzyme activity were studied in a column reactor with recirculation and in a batch stirred-tank reactor. The immobilized enzyme retained 44% of its activity at pH 11, 30 °C and 90% at 80 °C, pH 7. The half-life time of the immobilized catalase was increased to 2 h at pH 12, and 60 °C. Acceptable results were achieved when the residual water from the washing process of H2O2-bleached fabrics was treated with the immobilized enzyme and then reused for dyeing.
publishDate 2002
dc.date.none.fl_str_mv 2002-02
2002-02-01T00:00:00Z
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/1822/2620
url http://hdl.handle.net/1822/2620
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv "Biotechnology letters". ISSN 0141-5492. 24:3 (Febr.2002) 173–176.
0141-5492
10.1023/A:1014136703369
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 Kluwer
publisher.none.fl_str_mv Kluwer
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
_version_ 1799132945123901440

Registros relacionados