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Radio frequency-alkaline pretreatment of lignocellulosic barley straw
Authors: K. Iroba, L. Tabil, T. Canam and T. Dumonceaux
Identifier: CSBE11306
Download file: https://library.csbe-scgab.ca/docs/meetings/2011/CSBE11306.pdf
Published in: CSBE-SCGAB Technical Conferences » AGM Winnipeg 2011
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Description: The lignocellulosic nature of biomass presents resistance and ?recalcitrance? to the biological and chemical degradation of the lignocellulosic materials during enzymatic hydrolysis or saccharification, and the subsequent fermentation process. This leads to very low conversion rate, which makes the process uneconomically feasible. In this study, radio-frequency (RF)-based dielectric heating technique was used in the alkaline (NaOH) pretreatment of lignocellulosic biomass barley straw, so as to enhance its accessibility and digestibility by enzymatic reaction during hydrolysis. Due to the inherent and unique features of RF heating, samples can be pretreated under conditions which might not be conducive for microwave or the conventional heating methods. Two levels of sample particle size (1.6 and 0.8 mm), three levels of temperature (40, 50, and 60oC), 1 h equilibration time, and two levels of NaOH concentration (0.5 and 1%) at 20 min residence time were used for the radio frequency pretreatment. The effect of the RF pretreatment was assessed through chemical composition analysis and densification of the pretreated and un-pretreated biomass samples. Statistical analysis showed that 1% NaOH concentration has significant effect on the average acid insoluble lignin, ash content, and the physical characteristics of the produced pellets.
Keywords: radio frequency technique, lignocellulosic barley straw, volumetric heat generation, alkaline pretreatment, bio-ethanol
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Citation: K. Iroba, L. Tabil, T. Canam and T. Dumonceaux. 2013. Radio frequency-alkaline pretreatment of lignocellulosic barley straw. CSBE/SCGAB 2011 Annual Conference, Inn at the Forks, Winnipeg, Mb. 10-13 July 2011
Volume:
Issue:
Pages -
Contributor:
Date: juil-11
Technical field: Bioprocess Systems Engineering
Conference name: CSBE/SCGAB 2011 Annual Conference, Inn at the Forks, Winnipeg, Mb. 10-13 July 2011
Session name:
Other information:
Type: Text.Article
Format: PDF
Publication type: Conference Proceeding
Source:
Relation:
Coverage: Canada
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
DOI:
Description: The lignocellulosic nature of biomass presents resistance and ?recalcitrance? to the biological and chemical degradation of the lignocellulosic materials during enzymatic hydrolysis or saccharification, and the subsequent fermentation process. This leads to very low conversion rate, which makes the process uneconomically feasible. In this study, radio-frequency (RF)-based dielectric heating technique was used in the alkaline (NaOH) pretreatment of lignocellulosic biomass barley straw, so as to enhance its accessibility and digestibility by enzymatic reaction during hydrolysis. Due to the inherent and unique features of RF heating, samples can be pretreated under conditions which might not be conducive for microwave or the conventional heating methods. Two levels of sample particle size (1.6 and 0.8 mm), three levels of temperature (40, 50, and 60oC), 1 h equilibration time, and two levels of NaOH concentration (0.5 and 1%) at 20 min residence time were used for the radio frequency pretreatment. The effect of the RF pretreatment was assessed through chemical composition analysis and densification of the pretreated and un-pretreated biomass samples. Statistical analysis showed that 1% NaOH concentration has significant effect on the average acid insoluble lignin, ash content, and the physical characteristics of the produced pellets.
Keywords: radio frequency technique, lignocellulosic barley straw, volumetric heat generation, alkaline pretreatment, bio-ethanol
Résumé:
Mots-clés:
Citation: K. Iroba, L. Tabil, T. Canam and T. Dumonceaux. 2013. Radio frequency-alkaline pretreatment of lignocellulosic barley straw. CSBE/SCGAB 2011 Annual Conference, Inn at the Forks, Winnipeg, Mb. 10-13 July 2011
Volume:
Issue:
Pages -
Contributor:
Date: juil-11
Technical field: Bioprocess Systems Engineering
Conference name: CSBE/SCGAB 2011 Annual Conference, Inn at the Forks, Winnipeg, Mb. 10-13 July 2011
Session name:
Other information:
Type: Text.Article
Format: PDF
Publication type: Conference Proceeding
Source:
Relation:
Coverage: Canada
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
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