Tuesday, May 1, 2007 - 9:40 AM

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