Global climate change will make it necessary to transform transportation and mobility away from what we know now towards a sustainable, flexible, and dynamic sector. A severe reduction of fossil-based CO 2 emissions in all energy-consuming sectors will be necessary to keep global warming below 2°C above preindustrial levels. Thus, long-distance transportation will have to increase the share of renewable fuel consumed until alternative powertrains are ready to step in. Additionally, it is predicted that the share of renewables in the power generation sector grows worldwide. Thus, the need to store the excess electricity produced by fluctuating renewable sources is going to grow alike. The "Winddiesel" technology enables the integrative use of excess electricity combined with biomass-based fuel production. Surplus electricity can be converted to H 2 via electrolysis in a first step. The fluctuating H 2 source is combined with biomass-derived CO-rich syngas from gasification of lignocellulosic feedstock. Fischer-Tropsch synthesis converts the syngas to renewable hydrocarbons. This research article summarizes the experiments performed and presents new insights regarding the effects of load changes on the Fischer-Tropsch synthesis. Long-term campaigns were carried out, and performance-indicating parameters such as per-pass CO conversion, product distribution, and productivity were evaluated. The experiments showed that integrating renewable H 2 into a biomass-to-liquid Fischer-Tropsch concept could increase the productivity while product distribution remains almost the same. Furthermore, the economic assessment performed indicates good preconditions towards commercialization of the proposed system.

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The conversion of palmitic and oleic acid as well as tall oil fatty acid was investigated in a fully continuous small scale fluid catalytic cracking (FCC) pilot plant. A conventional FCC zeolite catalyst was used. Experiments were performed in the range of 485-550°C. The highest gasoline yield of 44 wt.% was obtained from oleic acid at 550°C. Palmitic acid yielded the most cracking gas at 550°C with 43.9 wt.%. The obtained gasoline was practically oxygen-free at high octane numbers. Oxygen contained in the feed was mainly converted to water and small amounts of CO 2 . Gasoline aromaticity clearly increased with temperature. The formation of high boiling products was enhanced by the number of C=C double bonds in the fatty acids. Large amounts of propene and ethene were formed which are valuable reactants for the polymer industry. The lower price of fatty acids in comparison with fresh vegetable oils makes them an interesting feedstock for the FCC process.

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