View article

All cheap local biomasses that contain unexploited fermentable sugars should be included in biorefineries. Yet, many current and projected biorefineries have relatively narrow feedstock portfolios. Increasing the feedstock diversity will create value to several stakeholders in the supply chain, by expanding the feedstock market to enter the large-scale 2G bioethanol plants. In turn, this will increase feedstock resource security, creating more competition at the supplier side, and consequently lower overall prices for 2G bioethanol.

In the current study whey, whey permeate, beer production mash, deep litter, potato pulp, rape seed press cake, and saw dust are all investigated as feedstock supplements on 2G bioethanol production of wheat straw. These biomasses can all be found in close proximity to a projected full-scale 2G ethanol plant in Denmark.