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

Iris Lewandowski, John Clifton-Brown, Luisa Trindada, Gerard van der Linden, Kai-Uwe Schwarz, Karl Müller-Sämann, Alexander Anisimow, C-L Chen, Oene Dolstra, Iain 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 Ozguven, Isabel Roldán-Ruiz, Heinrich Schüle, Ivan Tarakanov, Tim van der Weijde, Moritz Wagner, Qingguo Xi, Olena Kalinina

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    This paper describes the complete findings of the EU-funded research 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 anda field trial in Belgium. A small selection of germplasm types 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 policy makers, 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 and between sites; (3) quantification of biomass-quality-relevant traits; (4) abiotic stress tolerances of miscanthus genotypes; (5) selections suitable for production on marginal and; (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
    Lewandowski et al. Optimizing Miscanthus Biomass Production
    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 30.6t CO2 eq C ha−1y−1 and 429 GJ ha−1 y−1, respectively. Transport distance was identified as an important cost factor. Negative carbon mitigation costs of –78€ t−1 CO2eqC 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.
    Oorspronkelijke taalEngels
    TijdschriftFrontiers in Plant Science
    Volume7
    Aantal pagina’s23
    PublicatiestatusGepubliceerd - 2016

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