Miscanthus as biogas feedstock: influence of harvest time and stand age on the biochemical methane potential (BMP) of two different growing seasons
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The use of perennial crops instead of maize as feedstock in biogas plants can be associated with multiple environmental and economic benefits. One promising species in this domain is the C4-grass Miscanthus × giganteus. The use of its biomass can mitigate carbon dioxide emissions by substitution of fossil fuels, sequestration of carbon in soils and reduced fertilizing. We compared Miscanthus from two different old fields (established 1995 and 2008) at three different harvest dates over 2 years. While the harvest in spring, like usual for combustion purposes, led to relatively low methane yields per hectare, the harvest in autumn, when the biomass is still green, exceeded the average methane yields per hectare of maize. The comparison of different old Miscanthus fields showed that there is no significant difference in terms of biomass yield, specific BMP and BMP per hectare. Only the influence of repeated autumn harvest showed differences in the methane production per hectare between both stand ages. The methane yield of the younger stand did not change considerable, while in the older stand, the productivity decreased about 15% after 1 year.
KeywordsMiscanthus Perennial energy crop Anaerobic digestion Biochemical methane potential Harvest date Stand age
Biochemical methane potential
Normalized litre (1013 hPa, 0 °C)
Municipal wastewater treatment plant
Total solids = dry matter
Volatile solids = organic dry matter
percent per weight
This work has been financially supported by the Ministry of Education, Science, Youth & Culture Rhineland-Palatinate, Germany, within the Research Initiative: Trier Centre of Sustainable Studies (TriCSS), 04/2013–12/2016, University of Trier.
The authors would like to thank Marie Fossépré, Anaïs Noo and Bénédicte De Vos for their valuable support conducting the experiments. We also acknowledge the farmer Franz-Josef Koch for the possibility to work on his Miscanthus fields.
- 1.IPCC (2014) Summary for policymakers. In: Edenhofer O, Pichs-Madruga P, Sokona Y, Farahani E, Kadner S, Seyboth K, Adler A, Baum I, Brunner S, Eickemeier P, Kriemann B, Savolainen J, Schlömer S, Stechow C, Zwickel T, Minx JC (eds) Climate change 2014. Mitigation of climate change. Contribution of working group III to the fifth Assessment report of the intergovernmental panel on climate change. Cambridge University Press, Cambridge, United Kingdom and New York, NYGoogle Scholar
- 2.European Parliament (2009) Directive 2009/28/EC of the European Parliament and of the Council on the promotion of the use of energy from renewable sources and amending and subsequently repealing Directives 2001/77/EC and 2003/30/EC, L140/16, Official J. Eur. UnionGoogle Scholar
- 9.Mayer F, Gerin PA, Noo A, Lemaigre S, Stilmant D, Schmit T, Leclech N, Ruelle L, Gennen J, von Francken-Welz H, Foucart G, Flammang J, Weyland M, Delfosse P (2014) Assessment of energy crops alternative to maize for biogas production in the greater region. Bioresour Technol 166:358–367CrossRefGoogle Scholar
- 27.Kiesel A, Lewandowski I (2015) Miscanthus as biogas substrate - cutting tolerance and potential for anaerobic digestion. GCB Bioenergy. doi: 10.1111/gcbb.12330
- 29.Deutscher Wetterdienst (2016). Long-term mean temperature at station Trier-Zewen (station ID: 5099, 1981–2010). ftp://ftp-cdc.dwd.de/pub/CDC/observations_germany/climate/multi_annual/mean_81–10/Temperatur_1981–2010_aktStandort.txt Accessed 04 July 2016
- 30.Deutscher Wetterdienst (2016). Long-term mean precipitation at station Trier-Zewen (station ID: 5099, 1981–2010). ftp://ftp-cdc.dwd.de/pub/CDC/observations_germany/climate/multi_annual/mean_81–10/Niederschlag_1981–2010_aktStandort.txt Accessed 04 July 2016
- 31.Knörzer H, Hartung K, Piepho HP, Lewandowski I (2013) Assessment of variability in biomass yield and quality: what is an adequate size of sampling area for Miscanthus? GCB Bioenergy. doi: 10.1111/gcbb.12027
- 34.Verein Deutscher Ingenieure (2006) VDI 4630 Fermentation of organic material. Characterization of the substrate, sampling, collection of material data, fermentation testsGoogle Scholar
- 35.Raposo F, Fernández-Cegrí V, De la Rubia MA, Borja R, Béline F, Cavinato C, Demirer G, Fernández B, Fernández-Polanco M, Frigon JC, Ganesh R, Kaparaju P, Koubova J, Méndez R, Menin G, Peene A, Scherer P, Torrijos M, Uellendahl H, Wierinck I, de Wilde V (2011) Biochemical methane potential (BMP) of solid organic substrates: evaluation of anaerobic biodegradability using data from an international interlaboratory study. J Chem Technol Biotechnol 86:1088–1098CrossRefGoogle Scholar
- 40.Wetter Kontor GmbH (2016). Monats- und Jahreswerte für Deutschland http://www.wetterkontor.de/de/wetter/deutschland/monatswerte-station.asp?id=10609&yr=2017&mo=-1 Accesed 04 July 2016