Extraction of the fuel Isobutanol or the fuel Acetone from the bioreactor fluids (over 60 tons one extraction volume) has been found to be conducted via the supercritical Co2 extraction process. The purity of the extracted fuel Isobutanol or the fuel Acetone is about 99.99% of each. The methane seems to us as very cost attractive and therefore will be used nationwide on all our fermentation plants. We have already started recommending the use of this extraction method for other biofuel manufacturers nationwide and also World-wide.