The influence of Lupinuspolyphyllus Lindl. on energetic conversion parameters of plant biomass from semi-natural grasslands

摘要

European extensive grasslands have seen an increasing spread of the invasive alien plant species Lupinus polyphyllus Lindl., leading to a decline in biodiversity. Maintenance of biodiversity can be achieved by regular cutting before the ripening of the seeds ofZ. polyphyllus. The idea is to use the biomass for biofuel production. To investigate the effect of the lupine on energy conversion parameters, an artificial mixture series with silages of/,, polyphyllus and semi-natural grassland was established, containing 0, 25, 50, 75 and 100% (fresh weight based) of L. polyphyllus. Mineral composition of silage and biofuel has been determined. It could be shown that lupine biomass is a suitable substrate for biofuel production when processed appropriatelyand that mineral concentrations in the solid fuel are appropriare for combustion.