Enzymatic deinking of secondary fibers: cellulases/hemicellulases versus laccase-mediator system

The use of enzymes has been suggested as an environmentally-friendly alternative to complement conventional chemical deinking in the recycling of recovered paper. This study compares the use of carbohydrate hydrolases versus laccase-mediator system for deinking printed fibers from newspapers and mag...

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Detalles Bibliográficos
Autores: Ibarra, David, Monte Lara, María Concepción, Blanco Suárez, María Ángeles, Martínez, Ángel, Martínez, Maria Jesús
Tipo de recurso: artículo
Fecha de publicación:2012
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/44320
Acceso en línea:https://hdl.handle.net/20.500.14352/44320
Access Level:acceso abierto
Palabra clave:676
66
Cellulases
Deinking
Laccase-mediator system
Recycling
Secondary fibers
Xylanases
Industria del papel
Ingeniería química
Química industrial
Biotecnología
3312.13 Tecnología de la Madera
3303 Ingeniería y Tecnología Químicas
3399 Otras Especialidades Tecnológicas
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oai_identifier_str oai:docta.ucm.es:20.500.14352/44320
network_acronym_str ES
network_name_str España
repository_id_str
spelling Enzymatic deinking of secondary fibers: cellulases/hemicellulases versus laccase-mediator systemIbarra, DavidMonte Lara, María ConcepciónBlanco Suárez, María ÁngelesMartínez, ÁngelMartínez, Maria Jesús67666CellulasesDeinkingLaccase-mediator systemRecyclingSecondary fibersXylanasesIndustria del papelIngeniería químicaQuímica industrialBiotecnología3312.13 Tecnología de la Madera3303 Ingeniería y Tecnología Químicas3399 Otras Especialidades TecnológicasThe use of enzymes has been suggested as an environmentally-friendly alternative to complement conventional chemical deinking in the recycling of recovered paper. This study compares the use of carbohydrate hydrolases versus laccase-mediator system for deinking printed fibers from newspapers and magazines. For this purpose, two commercial enzyme preparations with endoglucanase and endoxylanase activities (Viscozyme Wheat from Aspergillus oryzae and Ultraflo L from Humicola insolens) and a commercial laccase NS51002 from Trametes villosa), the latter in the presence of synthetic or natural (lignin related) mediators, were evaluated. The enzymatic treatments were studied at laboratory scale, using a standard chemical deinking sequence consisting of pulping, alkaline deinking and peroxide bleaching stages. Then, handsheets were prepared and their brightness, residual ink concentration, and strength properties were measured. Among the different enzymatic treatments assayed, both carbohydrate hydrolases were found to deink the secondary fibers more efficiently. Brightness increased up to 3-4% ISO on newspaper fibers, being Ultraflo 20% more efficient in the ink removal. Up to 2.5% ISO brightness increase was obtained when magazine fibers were used, being Viscozyme 9% more efficient in the ink removal. As regards laccase-mediator system, alone or combined with carbohydrate hydrolases, it was ineffective deinking both newspaper and magazine fibers, resulting in pulps with worse brightness and residual ink concentration values. However, pulp deinking by laccase-mediator system was displayed when secondary fibers rich in lignin, i.e. printed cardboard, were used, obtaining up to 3% ISO brightness increase and lower residual ink concentrations.SpringerUniversidad Complutense de Madrid20122012-01-0120122012-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/44320reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/443202026-06-02T12:44:21Z
dc.title.none.fl_str_mv Enzymatic deinking of secondary fibers: cellulases/hemicellulases versus laccase-mediator system
title Enzymatic deinking of secondary fibers: cellulases/hemicellulases versus laccase-mediator system
spellingShingle Enzymatic deinking of secondary fibers: cellulases/hemicellulases versus laccase-mediator system
Ibarra, David
676
66
Cellulases
Deinking
Laccase-mediator system
Recycling
Secondary fibers
Xylanases
Industria del papel
Ingeniería química
Química industrial
Biotecnología
3312.13 Tecnología de la Madera
3303 Ingeniería y Tecnología Químicas
3399 Otras Especialidades Tecnológicas
title_short Enzymatic deinking of secondary fibers: cellulases/hemicellulases versus laccase-mediator system
title_full Enzymatic deinking of secondary fibers: cellulases/hemicellulases versus laccase-mediator system
title_fullStr Enzymatic deinking of secondary fibers: cellulases/hemicellulases versus laccase-mediator system
title_full_unstemmed Enzymatic deinking of secondary fibers: cellulases/hemicellulases versus laccase-mediator system
title_sort Enzymatic deinking of secondary fibers: cellulases/hemicellulases versus laccase-mediator system
dc.creator.none.fl_str_mv Ibarra, David
Monte Lara, María Concepción
Blanco Suárez, María Ángeles
Martínez, Ángel
Martínez, Maria Jesús
author Ibarra, David
author_facet Ibarra, David
Monte Lara, María Concepción
Blanco Suárez, María Ángeles
Martínez, Ángel
Martínez, Maria Jesús
author_role author
author2 Monte Lara, María Concepción
Blanco Suárez, María Ángeles
Martínez, Ángel
Martínez, Maria Jesús
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 676
66
Cellulases
Deinking
Laccase-mediator system
Recycling
Secondary fibers
Xylanases
Industria del papel
Ingeniería química
Química industrial
Biotecnología
3312.13 Tecnología de la Madera
3303 Ingeniería y Tecnología Químicas
3399 Otras Especialidades Tecnológicas
topic 676
66
Cellulases
Deinking
Laccase-mediator system
Recycling
Secondary fibers
Xylanases
Industria del papel
Ingeniería química
Química industrial
Biotecnología
3312.13 Tecnología de la Madera
3303 Ingeniería y Tecnología Químicas
3399 Otras Especialidades Tecnológicas
description The use of enzymes has been suggested as an environmentally-friendly alternative to complement conventional chemical deinking in the recycling of recovered paper. This study compares the use of carbohydrate hydrolases versus laccase-mediator system for deinking printed fibers from newspapers and magazines. For this purpose, two commercial enzyme preparations with endoglucanase and endoxylanase activities (Viscozyme Wheat from Aspergillus oryzae and Ultraflo L from Humicola insolens) and a commercial laccase NS51002 from Trametes villosa), the latter in the presence of synthetic or natural (lignin related) mediators, were evaluated. The enzymatic treatments were studied at laboratory scale, using a standard chemical deinking sequence consisting of pulping, alkaline deinking and peroxide bleaching stages. Then, handsheets were prepared and their brightness, residual ink concentration, and strength properties were measured. Among the different enzymatic treatments assayed, both carbohydrate hydrolases were found to deink the secondary fibers more efficiently. Brightness increased up to 3-4% ISO on newspaper fibers, being Ultraflo 20% more efficient in the ink removal. Up to 2.5% ISO brightness increase was obtained when magazine fibers were used, being Viscozyme 9% more efficient in the ink removal. As regards laccase-mediator system, alone or combined with carbohydrate hydrolases, it was ineffective deinking both newspaper and magazine fibers, resulting in pulps with worse brightness and residual ink concentration values. However, pulp deinking by laccase-mediator system was displayed when secondary fibers rich in lignin, i.e. printed cardboard, were used, obtaining up to 3% ISO brightness increase and lower residual ink concentrations.
publishDate 2012
dc.date.none.fl_str_mv 2012
2012-01-01
2012
2012-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/44320
url https://hdl.handle.net/20.500.14352/44320
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869420474323173376
score 15,301603

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