Photobleaching of eucalyptus kraft pulps. Thermogravimetric monitoring

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dc.contributor	Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera
dc.contributor	Universitat Politècnica de Catalunya. CELBIOTECH - Grup de Recerca: Enginyeria Paperera
dc.contributor.author	Barneto, A. G.
dc.contributor.author	Ariza, María
dc.contributor.author	Vidal Lluciá, Teresa
dc.contributor.author	Ariza, J.
dc.date	2014
dc.identifier.citation	Barneto, A. [et al.]. Photobleaching of eucalyptus kraft pulps. Thermogravimetric monitoring. A: European Workshop on Lignocellulosics and Pulp. "Proceedings of the 13th European workshop on Lignocellulosics and pulp". Sevilla: 2014, p. 195-198.
dc.identifier.citation	978-84-616-9842-4
dc.identifier.uri	http://hdl.handle.net/2117/23467
dc.language.iso	eng
dc.relation	http://www.irnas.csic.es/users/delrio/Proceedings-13thEWLP.pdf
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	Àrees temàtiques de la UPC::Enginyeria paperera::Pasta paperera::Blanqueig de pastes
dc.subject	Wood-pulp--Bleaching
dc.subject	Sulfate pulping process
dc.subject	Pasta de paper -- Blanqueig
dc.title	Photobleaching of eucalyptus kraft pulps. Thermogravimetric monitoring
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/conferenceObject
dc.description.abstract	This study assesses the potential of UV light as method to bleach eucalyptus pulps in different steps of their chemical bleaching process in a pulp mill. Higher brightness increasing were obtained on dirtier pulps, that is, alkaline washed and oxygen delignified pulps. In any case, photobleaching shows first-order kinetics. Rate of chromophores removal is proportional to the chromophores content in fiber surface. Complementarily, thermogravimetric analysis proved that UV light (400 nm wavelength) do not damages fiber integrity

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