| abstract |
The present invention provides a technical solution through which the liquid and solid residues from sugarcane processing are utilized for material and energy, while avoiding environmental pollution. For this purpose, proven biotechnological process steps are employed such that the energy potential of the biochar present in the residue is exploited to a great extent and the inorganic plant nutrients present in the residue are mainly preserved in a form usable by plants. For this purpose, during sugar cane processing, a mixture of liquid, finely divided and pulverized solid residues is produced, partly recovered directly during processing activities, and for recovery outside processing activities, silaged in storage areas (8) with low losses . The silage residue mixture is biotechnically recovered in the same manner as the fresh residue mixture. According to the multi-stage biotechnological process of the present invention, the fibril and carbohydrate rich residue is initially treated in a hydrolysis station (11). The hydrolysates obtained are successively fermented in a number of fermentation stations (12, 13) in different anaerobic environments, physically separated from each other, in each case using suitable microcultures and in this way utilizing the Known devices to ensure continuous culture. |