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Co-ensiling of cover crops and barley straw for biogas production

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Feng, L; Perschke, YML; Fontaine, D; Ward, AJ; Eriksen, J; Sørensen, P and Møller, HB (2019) Co-ensiling of cover crops and barley straw for biogas production. Renewable Energy, 142, pp. 677-683.

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Summary

The study investigated the effect of co-ensiling of cover crops (CC) and barley straw (BS) on biogas production. Blends containing chopped CC and BS (mix ratios of 1:0, 2:1, 3:1, 6:1; 10:1 and 19:1 (w:w)) were prepared and stored for 4 months prior to the biogas batch assay. Results show that CC is feasible for producing biogas with reasonable CH4 yield (330 mL CH4 gVS-1) and has good storability. Using of coensiling blends showed advantages over CC as it elevated the hydrolysis rate (k) from 0.024 to 0.061 d-1 and decreased the lag phase (from 5 to 0.8 days) during the thermophilic (51 C) batch test. Synergistic effects were observed from both CH4 yield and hemi-cellulose removal. The finding provided an alternative strategy for integrated straw management and CC utilization for improved biogas production.


EPrint Type:Journal paper
Keywords:Agricultural residue, Anaerobic digestion, Methane, Biomass, Silage
Subjects: Crop husbandry > Post harvest management and techniques
Research affiliation: Denmark > Organic RDD 3 > NutHY
Deposited By: Eriksen, Professor Jørgen
ID Code:37574
Deposited On:19 Mar 2020 13:28
Last Modified:19 Mar 2020 13:28
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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