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Integrating a xylanase treatment into an industrial-type sequence for eucalyptus kraft pulp bleaching

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10.1021/ie202863d
 
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hdl:2117/16433

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Fillat Latorre, ÚrsulaMés informació
Roncero Vivero, María BlancaMés informacióMés informacióMés informació
Sacón, Vera Maria
Bassa, Alexandre
Document typeArticle
Defense date2012
PublisherAmerican Chemical Society (ACS)
Rights accessRestricted access - publisher's policy
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Abstract
The influence of a treatment with two commercial xylanases on pulp and effluents obtained after the bleaching stages in the OXAZDP (O, oxygen stage; X, xylanase treatment; A, acid stage; Z, ozone stage; D, chlorine dioxide stage; P, hydrogen peroxide stage) sequence was studied. Also, the potential saving in chlorine dioxide was assessed. The enzyme treatment was performed on pulp containing some black liquor since the operating conditions were close to the conditions used in the storage tower in Fibria, identified as the most suitable point for application. The greatest differences in kappa number and hexenuronic acid content were observed after the X stage. Whereas, in brightness were observed after the Z stage. The effluent properties from the X stage were higher with the enzyme treatments. Also, the enzymes allowed chlorine dioxide consumption in the bleaching stage to be reduced. The control pulp contained twice as much adsorbable organic halides (AOX) and exhibited twice more brightness reversion than did the enzyme-treated samples. However, the tensile index and drainability at an identical degree of refining were lower in the enzyme-treated samples
CitationFillat, Ú. [et al.]. Integrating a xylanase treatment into an industrial-type sequence for eucalyptus kraft pulp bleaching. "Industrial & engineering chemistry research", 2012, vol. 51, núm. 7, p. 2830-2837. 
URIhttp://hdl.handle.net/2117/16433
DOI10.1021/ie202863d
ISSN0888-5885
Publisher versionhttp://pubs.acs.org/doi/pdfplus/10.1021/ie202863d
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  • Departament d'Enginyeria Tèxtil i Paperera - Articles de revista [159]
  • CIPAGRAF - Grup de Recerca Paperer i Gràfic - Articles de revista [38]
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