Biodiesel in Germany a short compilation Prof. Dr. Bernd Stephan Unversity of Applied Science Bremerhaven, Germany

Biodiesel Consumption

Fuel Consumption (million tons per year) (exp) Biodiesel(est.) Biodiesel (exp.)11.1

Applied Catalysts NaOH in solution of methanol NaOCH 3 mixed with methanol – ready for the transesterification process Acidic systems as sulfuric acid Under research: solid systems to improve phase separation and product purification

Biodiesel in Laboratory

Biofuels, Synthetic Fuels in the German Market

Example: Protein production from oil seeds residues

Process Explanation (acc. Burcon) Input from truck: filter cake Mixing and extraction with a specific solution and filtering Concentratioon and purification Diluting before spray drying Product: high value protein for human nutrition

Trends Broadening of substrate basis: e.g used kitchen oil, fats from waste water treatment (skimmer) Improve purity and stability against decomposition Standardization and quality control of biofuels Car manufacturers optimize the engine performance for operation with biodiesel (stability of materials, lubrication proprties) Biodiesel production: improvements of phase separation, solid catalysts (e.g. acidic modified cabohydrates) Besides biodiesel so called BTL-fuel („Choren-Process“, „SunFuel“) will be available with higher contributions from solid biomass Today: cars operated with compressed natural gas can compete with biodiesel vehicles, they serve a growing market Utilization of byproducts: glycerol, proteins