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Autohydrolysis of White Birch (Betula papyrifera) and Poplar (Populus) in laboratory batch digester, characterization of solids for bioenergy and/or subsequent conversions
Authors: Pilon, Guillaume , Lamothe, Jean-Patrice , Michaud, Gaston , Barnabé, Simon
Identifier: CSBE18144
Download file: https://library.csbe-scgab.ca/docs/meetings/2018/CSBE18144.pdf
Published in: CSBE-SCGAB Technical Conferences » AGM Guelph 2018
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Description: The pretreatment of biomass to subsequently facilitate water removal processes or to reduce hygroscopic properties could be beneficial to maintain optimal calorific value, to stabilize geometry of feedstock particles or to reduce biodegradation susceptibility. Such improvements could be worthwhile for some bioenergy applications or subsequent conversions along a biorefining approach. The present study targets the effect of pretreating White Birch (Betula papyrifera) and Poplar (Populus) wood chips by autohydrolysis in a 6L batch recirculating digester (M/K Systems inc.) operated at temperatures from 140 to 170 °C and over time range between 60 to 180 min.. The effect of these operating conditions were related to three main feedstock characteristics: the calorific value (HHV), the equilibrium moisture content (EMC at 23°C, 50% relative humidity) and water retention value (WRV). For Poplar, a significant increase of HHVsavg was observed following treatments with respect to non-treated biomass, at T° conditions from 150-170 °C. For both types of pretreated feedstock, respectively, all EMC values averaged to a single EMC value was significantly lower compared to non-pretreated feedstock EMC value. In addition, significant relationships were obtained between EMC results and severity index variation, for both feedstocks. The treated White Birch resulted in a significant increase of all WRVsavg. obtained, compared to the non-treated feedstock.
Keywords: Autohydrolysis, recirculation digester, Calorific value, Equilibrium moisture content, Water retention value
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Date: 2018-07-22
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Conference name: CSBE/SCGAB 2018 Annual Conference, School of Engineering, University of Guelph, Guelph, Ontario, July 22-25 2018.
Session name: Clean and Green Energy I
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Type: Text.Article
Format:
Publication type: Technical conference
Source:
Relation:
Coverage: Canada
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
DOI:
Description: The pretreatment of biomass to subsequently facilitate water removal processes or to reduce hygroscopic properties could be beneficial to maintain optimal calorific value, to stabilize geometry of feedstock particles or to reduce biodegradation susceptibility. Such improvements could be worthwhile for some bioenergy applications or subsequent conversions along a biorefining approach. The present study targets the effect of pretreating White Birch (Betula papyrifera) and Poplar (Populus) wood chips by autohydrolysis in a 6L batch recirculating digester (M/K Systems inc.) operated at temperatures from 140 to 170 °C and over time range between 60 to 180 min.. The effect of these operating conditions were related to three main feedstock characteristics: the calorific value (HHV), the equilibrium moisture content (EMC at 23°C, 50% relative humidity) and water retention value (WRV). For Poplar, a significant increase of HHVsavg was observed following treatments with respect to non-treated biomass, at T° conditions from 150-170 °C. For both types of pretreated feedstock, respectively, all EMC values averaged to a single EMC value was significantly lower compared to non-pretreated feedstock EMC value. In addition, significant relationships were obtained between EMC results and severity index variation, for both feedstocks. The treated White Birch resulted in a significant increase of all WRVsavg. obtained, compared to the non-treated feedstock.
Keywords: Autohydrolysis, recirculation digester, Calorific value, Equilibrium moisture content, Water retention value
Résumé:
Mots-clés:
Citation:
Volume:
Issue:
Pages -
Contributor:
Date: 2018-07-22
Technical field:
Conference name: CSBE/SCGAB 2018 Annual Conference, School of Engineering, University of Guelph, Guelph, Ontario, July 22-25 2018.
Session name: Clean and Green Energy I
Other information:
Type: Text.Article
Format:
Publication type: Technical conference
Source:
Relation:
Coverage: Canada
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
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