Optimization of biobleaching of paper pulp in an expanded bed bioreactor with immobilized alkali stable xylanase by using response surface methodology

2.50
Hdl Handle:
http://hdl.handle.net/2173/31934
Title:
Optimization of biobleaching of paper pulp in an expanded bed bioreactor with immobilized alkali stable xylanase by using response surface methodology
Authors:
Senthilkumar, Sundar R.; Dempsey, Michael J.; Krishnan, Chandraraj; Gunasekaran, Paramasamy
Citation:
Bioresource technology, 2008, vol. 99, no. 16, pp. 7781-7787
Publisher:
Elsevier
Issue Date:
Nov-2008
URI:
http://hdl.handle.net/2173/31934
DOI:
10.1016/j.biortech.2008.01.058
Additional Links:
http://www.elsevier.com/locate/biortech
Abstract:
Purified alkali stable xylanase from Aspergillus fischeri was immobilized on polystyrene beads using diazotization method. An expanded bed bioreactor was developed with these immobilized beads to biobleach the paper pulp in continuous mode. Response surface methodology was applied to optimize the biobleaching conditions. Temperature (°C), flow rate of pulp (ml/min) and concentration of the pulp (%) were selected as variables in this study. Optimal conditions for biobleaching process were reaction temperature 60 °C, flow rate of 2 ml/min and 5% (w/v) of pulp. The kappa number reduced from 66 in the unbleached pulp to 20 (reduction of 87%). This system proves to be a better option for the conventional chlorine based pulp bleaching.
Type:
Article
Language:
en
Description:
Full-text of this article is not available in this e-prints service. This article was originally published following peer-review in Bioresource technology, published by and copyright Elsevier.
Keywords:
Aspergillus fischeri; Biobleaching; Expanded bioreactor; Immobilization; Xylanase
ISSN:
0960-8524
EISSN:
1873-2976

Full metadata record

DC FieldValue Language
dc.contributor.authorSenthilkumar, Sundar R.-
dc.contributor.authorDempsey, Michael J.-
dc.contributor.authorKrishnan, Chandraraj-
dc.contributor.authorGunasekaran, Paramasamy-
dc.date.accessioned2008-07-14T15:20:32Z-
dc.date.available2008-07-14T15:20:32Z-
dc.date.issued2008-11-
dc.identifier.citationBioresource technology, 2008, vol. 99, no. 16, pp. 7781-7787en
dc.identifier.issn0960-8524-
dc.identifier.doi10.1016/j.biortech.2008.01.058-
dc.identifier.urihttp://hdl.handle.net/2173/31934-
dc.descriptionFull-text of this article is not available in this e-prints service. This article was originally published following peer-review in Bioresource technology, published by and copyright Elsevier.en
dc.description.abstractPurified alkali stable xylanase from Aspergillus fischeri was immobilized on polystyrene beads using diazotization method. An expanded bed bioreactor was developed with these immobilized beads to biobleach the paper pulp in continuous mode. Response surface methodology was applied to optimize the biobleaching conditions. Temperature (°C), flow rate of pulp (ml/min) and concentration of the pulp (%) were selected as variables in this study. Optimal conditions for biobleaching process were reaction temperature 60 °C, flow rate of 2 ml/min and 5% (w/v) of pulp. The kappa number reduced from 66 in the unbleached pulp to 20 (reduction of 87%). This system proves to be a better option for the conventional chlorine based pulp bleaching.en
dc.language.isoenen
dc.publisherElsevieren
dc.relation.urlhttp://www.elsevier.com/locate/biortechen
dc.subjectAspergillus fischerien
dc.subjectBiobleachingen
dc.subjectExpanded bioreactoren
dc.subjectImmobilizationen
dc.subjectXylanaseen
dc.titleOptimization of biobleaching of paper pulp in an expanded bed bioreactor with immobilized alkali stable xylanase by using response surface methodologyen
dc.typeArticleen
dc.identifier.eissn1873-2976-
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