Progress on optimizing miscanthus biomass production for the european bioeconomy: Results of the EU FP7 project OPTIMISC

Iris Lewandowski*, John Clifton-Brown, Luisa M. Trindade, Gerard C. van der Linden, Kai Uwe Schwarz, Karl Müller-Sämann, Alexander Anisimov, C.L. Chen, Oene Dolstra, Iain S. Donnison, Kerrie Farrar, Simon Fonteyne, Graham Harding, Astley Hastings, Laurie M. Huxley, Yasir Iqbal, Nikolay Khokhlov, Andreas Kiesel, Peter Lootens, Heike MeyerMichal Mos, Hilde Muylle, Chris Nunn, Mensure Özgüven, Isabel Roldán-Ruiz, Heinrich Schüle, Ivan Tarakanov, Tim van der Weijde, Moritz Wagner, Qingguo Xi, Olena Kalinina

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

76 Citations (Scopus)

Abstract

This paper describes the complete findings of the EU-fundedresearch project OPTIMISC,which investigated methods to optimize the production and use of miscanthus biomass. Miscanthus bioenergy and bioproduct chains were investigated by trialing 15 diverse germplasm types in a range of climatic and soil environments across central Europe,Ukraine,Russia,and China. The abiotic stress tolerances of a wider panel of 100 germplasm types to drought,salinity,and low temperatures were measured in the laboratory and a field trial in Belgium. Asmall selection of germplasmtypes was evaluated for performance in grasslands on marginal sites in Germany and the UK. The growth traits underlying biomass yield and quality were measured to improve regional estimates of feedstock availability. Several potential high-value bioproducts were identified. The combined results provide recommendations to policymakers,growers and industry. The major technical advances in miscanthus production achieved by OPTIMISC include: (1) demonstration that novel hybrids can out-yield the standard commercially grown genotype Miscanthus x giganteus; (2) characterization of the interactions of physiological growth responses with environmental variation within andbetween sites; (3) quantification of biomass-quality-relevant traits; (4) abiotic stress tolerances of miscanthus genotypes; (5) selections suitable for production on marginal land; (6) field establishment methods for seeds using plugs; (7) evaluation of harvesting methods; and (8) quantification of energy used in densification (pellet) technologies with a range of hybrids with differences in stem wall properties. End-user needs were addressed by demonstrating the potential of optimizing miscanthus biomass composition for the production of ethanol and biogas as well as for combustion. The costs and life-cycle assessment of seven miscanthus-based value chains,including small- and large-scale heat and power,ethanol,biogas,and insulation material production,revealed GHG-emission- and fossil-energy-saving potentials of up to 30.6 t CO2eq C ha−1 y−1 and 429 GJ ha−1 y−1 ,respectively. Transport distance was identified as an important cost factor. Negative carbon mitigation costs of –78€−1 CO2eq C were recorded for local biomass use. The OPTIMISC results demonstrate the potential of miscanthus as a crop for marginal sites and provide information and technologies for the commercial implementation of miscanthus-based value chains.

Original languageEnglish
Article number1620
Number of pages23
JournalFrontiers in Plant Science
Volume7
DOIs
Publication statusPublished - 18 Nov 2016

Keywords

  • Bioeconomy
  • Costs
  • Genotypes
  • LCA
  • Marginal land
  • Miscanthus
  • Stress tolerance
  • Value chains

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