Výsledky vyhledávání - "Enginyeria paperera::Pasta paperera::Blanqueig de pastes [Àrees temàtiques de la UPC]"

An improved TCF sequence for biobleaching kenaf pulp: Influence of the hexenuronic acid content and the use of xylanase

Publikováno v: Recercat. Dipósit de la Recerca de Catalunya
Universitat Jaume I
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

Enzymatic delignification with laccase from Trametes villosa used in combination with chemical mediators (acetosyringone, acetovanillone and 1-hydroxybenzotriazole) to improve the totally chlorine-free (TCF) bleaching of kenaf pulp was studied. The b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f67409a605ba4637fde91487b967fbf
https://doi.org/10.1016/j.biortech.2013.11.014

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Use of Cyclic Voltammetry as an Effective Tool for Selecting Efficient Enhancers for Oxidative Bioprocesses: Importance of pH

Autor: Elisabetta Aracri, Teresa Vidal, Tzanko Tzanov

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
instname

Seven natural phenols and two synthetic compounds were evaluated by means of cyclic voltammetry as enhancers for the oxidation of the lignin model compound veratryl alcohol (VAl) and a sulfonated lignin (SL). Their electrochemical behaviors and catal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d9e6cc57fb8485b56d60f908faa537c
https://doi.org/10.1021/ie3027586

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Blanqueig de paper reciclat mitjançant ozó i mètodes biotecnològics

Autor: Bosch del Río, Alejandro

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

Aquest treball s’emmarca dins d’una de les línies d’investigació del grup de recerca en Enginyeria Paperera (CELBIOTECH) de l’Escola Tècnica Superior d’Enginyeries Industrial i Aeronàutica de Terrassa encaminada a l’estudi i optimitza

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::17755b0ba9c2e16f88fc12b81ef9dc95
https://hdl.handle.net/2117/187161

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A new approach to the biobleaching of flax pulp with laccase using natural mediators

Autor: Amanda Fillat, Teresa Vidal, J. F. Colom

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
instname

The phenols syringaldehyde (SA), acetosyringone (AS) and p-coumaric acid (PCA) were used as natural laccase mediators in combination with a laccase from Pycnoporus cinnabarinus to bleach flax fibres. Their performance was compared with 1-hydroxybenzo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d80006e7ca85eb4aa59b9afbc564208
https://doi.org/10.1016/j.biortech.2010.01.057

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Studying the effects of laccase treatment in a softwood dissolving pulp: cellulose reactivity and crystallinity

Autor: M. Blanca Roncero, Cristina Valls, Teresa Vidal, Agustín García Barneto, José Luis Gómez Ariza, Elisabet Quintana

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
Universitat Jaume I

An enzymatic biobleaching sequence (L VA QPO) using a laccase from Trametes villosa in combination with violuric acid (VA) and then followed by a pressurized hydrogen peroxide treatment (PO) was developed and found to give high bleaching properties a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e2cc78097f27f7aa2f7fc96f4523b92b
https://hdl.handle.net/2117/26885

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Evaluating changes on cellulosic biobleached fibers by means of thermogravimetric analysis

Autor: Quintana, Elisabet, Garcia Barneto, Agustín, Valls Vidal, Cristina, Vidal Lluciá, Teresa, Ariza, J., Roncero Vivero, María Blanca

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
instname

The effects on fibre surface produced by the laccase-mediator system on softwood sulphite fibres were analysed in terms of surface crystallinity using thermogravimetric analysis. The starting pulp presented low content of lignin and hemicelluloses an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::0aac4343e8bc53d57875f42041775aa6
https://hdl.handle.net/2117/23480

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New strategies to bleach dissolving pulps using enzymatic treatments

Autor: Quintana, Elisabet, Valls Vidal, Cristina, Vidal Lluciá, Teresa, Roncero Vivero, María Blanca

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
Universitat Jaume I

A biobleaching sequence was applied to sulphite pulp in order to explore new bleaching possibilities using enzymatic treatments. Therefore, the well-known laccase-mediator system was used with the aim to achieve dissolving pulp characteristics. The e

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::15304e6c856d707d1d78fbaa7f1f2ad3
https://hdl.handle.net/2117/26243

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Monitoring oxidation-reduction potential of laccase-mediator system: can the efficiency of a redox mediator for deslignifying kenaf pulp be predicted?

Autor: Andreu Terrén, Glòria, Vidal Lluciá, Teresa|||0000-0001-6269-4114

Publikováno v: Recercat. Dipósit de la Recerca de Catalunya
Universitat Jaume I
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

The oxidative ability of five phenolic compounds (acetosyringone, syringaldehyde, p-coumaric acid, vanillin and actovanillone) and the laccase–mediator systems was determined by monitoring the oxidation–reduction potential (ORP) during solution o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::ba321bd19f939e355e128a605c827b2d
https://hdl.handle.net/2117/23478

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Exploring biobleaching possibilities of dissolving pulps by means of enzymatic treatments

Autor: Quintana, Elisabet, Valls Vidal, Cristina, Vidal Lluciá, Teresa, Roncero Vivero, María Blanca

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
Universitat Jaume I

Unbleached sulphite cellulose was subjected to an LQPo biobleaching sequence with the intention to elucidate the potential of LMS as an alternative to conventional bleaching processes. The enzymatic stage (L) was performed with the presence of Tramet

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::bcf9b6b48890bdbc8909c3857f364c02
http://hdl.handle.net/2117/23444

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Xylanase treatment of eucalyptus pulps in different chemical bleaching stages

Autor: Ariza, María, Barneto, A. G., Vidal Lluciá, Teresa, Ariza, J.

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
Universitat Jaume I

Xylanase significantly reduces the kappa number but almost not modifies brightness and viscosity in studied pulps. On average, xylanase decreases the kappa number of chemical pulps 25 %. This intense effect on the kappa number can be explained by enz

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::c7996a37505a6a8faa47bcaf58afeb25
https://hdl.handle.net/2117/23463

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