Tuesday, May 1, 2007 - 9:40 AM
4-06
Maxifuels: A fully integrated pilot-scale biorefinery for conversion of lignocellulosic biomass into biofuels
Birgitte K. Ahring, Bsel, WSU, 2710 University Drive, Richland, WA 99354, Denmark
Maxifuel is a concept whereby lignocellulosic material is converted into a number of
products such as bioethanol, biohydrogen, biogas and a
solid lignin fuel. The philosophy behind the concept is built on sustainability
and full recovery and no waste or waste water is produced from the system.
Therefore, the over-all idea is to develop a carbon-slaughter-house where every
carbon atom is used.
Four major steps are employed including pretreatment,
enzymatic hydrolysis and yeast fermentation, thermophilic fermentation and biogas production. Process
water is recycled in the system and nutrients are removed as a solid fertilizer
product. A pilot facility including all process steps has
been established and operated on ca. 150 kg of straw per day. Results from the
first half year of operation will be presented including over-all yields and
productivities. A techno-economic model over a Maxifuels full scale system has been developed including all
direct, indirect and production cost. In the presentation we will present the
calculations demonstrating the possibilities of producing bioethanol from a
price comparable or lower than gasoline with the Maxifuels process.
Web Page: www.biogasol.com