The presentation will give an overview of the sunliquid®-process for the production of cellulosic bio-ethanol from lignocellulosic agricultural residues. The sunliquid®-process (www.sunliquid.com) for cellulosic bio-ethanol matches the ambitious targets for sustainable production and greenhouse gas reduction of 90% compared to fossil fuels. The process offers the maximum yield of ethanol by converting cellulose and hemicelluloses into ethanol resulting in 50% higher ethanol yield compared to processes using only Cellulose. The sunliquid®-process is a turn-key ready production for cellulosic bio-ethanol with integrated enzyme supply through an integrated production and reduces the production costs for cellulosic ethanol significantly. The internal produced enzymes were optimized and developed with a concerted process development which gives the sunliquid®-process high product yields in shorter production times.

In February 2009 a pilot plant for biocatalytic bio-ethanol production has been installed at Süd-Chemie's central research laboratory in Munich and test operations having commenced at the beginning of last year. So far available lab and pilot plant data for process and strain development are demonstrating the economic competitiveness to first generation processes. Therefore Süd-Chemie is building a sunliquid® demonstration plant (start of operation in H2 2011) as a next step in the commercialization of the sunliquid®-process.

The sunliquid® process: Cellulosic ethanol from lignocellulosic agricultural residues as a sustainable biofuel agricultural residues as a sustainable biofuel

Cellulosic ethanol is bioethanol made from lignocellulosic feedstock such as agricultural residues like cereal straw, corn stover or bagasse or dedicated energy crops. In comparison to 1st generation bioethanol made from sugar or starch, cellulosic ethanol achieves significant higher greenhouse gas emission savings of up to 95%, uses only non edible parts of plants thus avoiding a competition between food and fuel and is not associated with additional land use. Additionally it constitutes a domestically produced liquid energy source thus reducing the dependency on the import of fossil resources, creating green jobs and income for the agricultural industry. Hence, cellulosic ethanol offers economical, ecological and political benefits for industrialized countries and opens new perspectives for the agricultural industry. Furthermore it can play a substantial part on the way to a more sustainable mobility.

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