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Palmqvist, B., Kadić, A., Hägglund, K., Petersson, A. & Lidén, G. (2016). Scale-up of high-solid enzymatic hydrolysis of steam-pretreated softwood: the effects of reactor flow conditions. Biomass Conversion and Biorefinery, 6(2), 173-180
Open this publication in new window or tab >>Scale-up of high-solid enzymatic hydrolysis of steam-pretreated softwood: the effects of reactor flow conditions
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2016 (English)In: Biomass Conversion and Biorefinery, ISSN 2190-6815, E-ISSN 2190-6823, Vol. 6, no 2, p. 173-180Article in journal (Refereed) Published
Abstract [en]

The importance of flow conditions during scale-up of high-solid enzymatic hydrolysis of steam-pretreated spruce was demonstrated by comparing hydrolysis rates between laboratory (2 L) and demonstration (4 m3) scale. A positive effect of increased agitation speed on the rate of enzymatic hydrolysis was found regardless of scale. Importantly, the hydrolysis rate was higher at the larger scale when compared at similar specific power inputs. Changes in the rheological properties of the pretreated material during the hydrolysis were followed by off-line measurements of apparent viscosity. This information was used to estimate the flow conditions in the reactors, i.e., average Reynolds numbers, which together with measured mixing power consumptions enabled a more detailed comparison between the scales. The hydrolysis yields correlated better with average Reynolds numbers than specific power input over the different scales. This indicates that mass transport limitations, caused by insufficient bulk flow, likely play a decisive role in determining the rate of enzymatic hydrolysis.

Enzymatic hydrolysis, Mixing, Power input, Rheology, Scale-up, Spruce, Hydrolysis, Reynolds number, Mass transport limitation, Reactor flow conditions, Rheological property, Specific power inputs, Steam pretreated spruce
National Category
Natural Sciences
urn:nbn:se:ri:diva-27647 (URN)10.1007/s13399-015-0177-3 (DOI)2-s2.0-84978024424 (Scopus ID)

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Available from: 2016-12-22 Created: 2016-12-21 Last updated: 2019-06-18Bibliographically approved
Petersson, A., Wännström, S. & Zacchi, G. (2015). Syntes och verifiering av samlade erfarenheter och resultat från lignocellulosaetanolforskning (ed.). Paper presented at .
Open this publication in new window or tab >>Syntes och verifiering av samlade erfarenheter och resultat från lignocellulosaetanolforskning
2015 (Swedish)Report (Refereed)
SP Rapport, ISSN 0284-5172 ; 2015:71
National Category
Natural Sciences
urn:nbn:se:ri:diva-5290 (URN)29389 (Local ID)29389 (Archive number)29389 (OAI)
Available from: 2016-09-07 Created: 2016-09-07 Last updated: 2018-08-14Bibliographically approved
Holmgren, M. A., Hellström, H., Petersson, A. & Blom, A. (2012). The Swedish voluntary agreement for control of methane emissions from biogas plants (ed.). In: : . Paper presented at ORBIT2012 - Global assessment for organic resources and waste management, Conference Proceedings.
Open this publication in new window or tab >>The Swedish voluntary agreement for control of methane emissions from biogas plants
2012 (English)Conference paper, Published paper (Other academic)
National Category
Natural Sciences
urn:nbn:se:ri:diva-12144 (URN)13840 (Local ID)13840 (Archive number)13840 (OAI)
ORBIT2012 - Global assessment for organic resources and waste management, Conference Proceedings
Available from: 2016-09-13 Created: 2016-09-13 Last updated: 2018-08-16Bibliographically approved
Petersson, A. (2012). The Swedish voluntary system for methane emissions (ed.). Paper presented at .
Open this publication in new window or tab >>The Swedish voluntary system for methane emissions
2012 (English)Report (Refereed)
Abstract [en]

BIOGAS SUSTAINABILITY Information from IEA BIOENERGY TASK 37 Energy from Biogas

IEA Biowenergy Task 37
National Category
Natural Sciences
urn:nbn:se:ri:diva-5549 (URN)14885 (Local ID)14885 (Archive number)14885 (OAI)
Available from: 2016-09-08 Created: 2016-09-08 Last updated: 2018-08-14Bibliographically approved

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