Effect of Different Sugar Beet Pulp Pretreatments on Biogas Production Efficiency

The objective of this study was to determine the effect of different sugar beet pulp (SBP) pretreatments on biogas yield from anaerobic digestion. SBP was subjected to grinding, thermal-pressure processing, enzymatic hydrolysis, or combination of these pretreatments. It was observed that grinding of...

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Bibliographic Details
Published in:Applied biochemistry and biotechnology 2017-03, Vol.181 (3), p.1211-1227
Main Authors: Ziemiski, Krzysztof, Kowalska-wentel, Monika
Format: Article
Language:English
Subjects:
Anaerobic digestion
Atoms & subatomic particles
Beta vulgaris - chemistry
Biochemistry
Biofuels
Biogas
Biotechnology
Chemistry
Chemistry and Materials Science
Energy balance
Flowers & plants
Glucose - chemistry
Hot Temperature
Sugar
Thermal energy
Vegetables
Volatile solids
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Summary:The objective of this study was to determine the effect of different sugar beet pulp (SBP) pretreatments on biogas yield from anaerobic digestion. SBP was subjected to grinding, thermal-pressure processing, enzymatic hydrolysis, or combination of these pretreatments. It was observed that grinding of SBP to 2.5-mm particles resulted in the cumulative biogas productivity of 617.2 mL/g volatile solids (VS), which was 20.2 % higher compared to the biogas yield from the not pretreated SBP, and comparable to that from not ground, enzymatically hydrolyzed SBP. The highest cumulative biogas productivity, 898.7 mL/g VS, was obtained from the ground, thermal-pressure pretreated and enzymatically hydrolyzed SBP. The latter pretreatment variant enabled to achieve the highest glucose concentration (24.765 mg/mL) in the enzymatic hydrolysates. The analysis of energy balance showed that the increase in the number of SBP pretreatment operations significantly reduced the gain of electric energy.
ISSN:0273-2289
1559-0291
DOI:10.1007/s12010-016-2279-1