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An improved TCF sequence for biobleaching kenaf pulp: influence of the hexenuronic acid content and the use of xylanase
dc.contributor.author | Andreu Terrén, Glòria |
dc.contributor.author | Vidal Lluciá, Teresa |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Química |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera |
dc.date.accessioned | 2014-09-09T11:20:27Z |
dc.date.created | 2014-01-01 |
dc.date.issued | 2014-01-01 |
dc.identifier.citation | Andreu, M.; Vidal, T. An improved TCF sequence for biobleaching kenaf pulp: influence of the hexenuronic acid content and the use of xylanase. "Bioresource technology", 01 Gener 2014, vol. 152, p. 253-258. |
dc.identifier.issn | 0960-8524 |
dc.identifier.uri | http://hdl.handle.net/2117/24020 |
dc.description.abstract | 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 best final pulp properties were obtained by using an L-HBT-QPo sequence developed by incorporating a laccase-mediator stage into an industrial bleaching sequence involving chelation and peroxide stages. The new sequence resulted in increased kenaf pulp delignification (90.4%) and brightness (77.2%ISO) relative to a conventional TCF chemical sequence (74.5% delignification and 74.5% brightness). Also, the sequence provided bleached kenaf fibers with high cellulose content (pulp viscosity of 890 g . mL (1) vs 660 g . mL (1)). Scanning electron micrographs revealed that xylanase altered fiber surfaces and facilitated reagent access as a result. However, the LHBTX (xylanase) stage removed 21% of hexenuronic acids in kenaf pulp. These recalcitrant compounds spent additional bleaching reagents and affected pulp properties after peroxide stage. (C) 2013 Elsevier Ltd. All rights reserved. |
dc.format.extent | 6 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Enginyeria paperera::Pasta paperera::Blanqueig de pastes |
dc.subject | Àrees temàtiques de la UPC::Enginyeria paperera::Primeres matèries papereres::Fustes papereres |
dc.subject.lcsh | Wood-pulp--Bleaching |
dc.subject.lcsh | Kenaf--Technological innovation |
dc.subject.lcsh | Xylanases--Industrial applications |
dc.subject.lcsh | Kraft pulping |
dc.subject.other | Kenaf |
dc.subject.other | TCF bleaching sequence |
dc.subject.other | Laccase-mediator system (LMS) |
dc.subject.other | Hexenuronic acids |
dc.subject.other | Xylanase |
dc.subject.other | NATURAL MEDIATOR SYSTEMS |
dc.subject.other | KRAFT PULPS |
dc.subject.other | CHEMICAL PULPS |
dc.subject.other | IMPACT |
dc.subject.other | ECF |
dc.title | An improved TCF sequence for biobleaching kenaf pulp: influence of the hexenuronic acid content and the use of xylanase |
dc.type | Article |
dc.subject.lemac | Kenak, fibra de -- Blanqueig |
dc.subject.lemac | Paper -- Blanqueig |
dc.subject.lemac | Pasta de paper -- Blanqueig |
dc.contributor.group | Universitat Politècnica de Catalunya. CELBIOTECH - Grup de Recerca: Enginyeria Paperera |
dc.identifier.doi | 10.1016/j.biortech.2013.11.014 |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 12906865 |
dc.description.version | Postprint (published version) |
dc.date.lift | 10000-01-01 |
local.citation.author | Andreu, M.; Vidal, T. |
local.citation.publicationName | Bioresource technology |
local.citation.volume | 152 |
local.citation.startingPage | 253 |
local.citation.endingPage | 258 |
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