Journal
BIORESOURCE TECHNOLOGY
Volume 244, Issue -, Pages 949-956Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.08.042
Keywords
Biomass; Agricultural residues; Maize straw; Biofuel; Anaerobic digestion
Funding
- Competence Centers for Excellent Technologies (COMET) through alpS - Centre for Climate Change Adaptation
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This study evaluated the effect of steam explosion on the chemical composition and biomethane potential of corn stover using temperatures ranging between 140 and 220 degrees C and pretreatment times ranging between 2 and 15 min. Biodegradation kinetics during the anaerobic digestion of untreated and corn stover, pretreated at two different intensities, 140 degrees C for 5 min and 180 degrees C for 5 min, were studied in tandem. Results showed that pretreatment at 160 degrees C for 2 min improved the methane yield by 22%. Harsher pretreatment conditions led to lower hemicellulose contents and methane yields, as well as higher lignin contents, which may be due to the formation of pseudo-lignin. The biodegradation kinetics trial demonstrated that steam explosion enhances the degradation of structural carbohydrates and acid insoluble lignin.
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