TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: In step (b), the residues of the (hemi)cellulose are combined with the lignin fraction, before the step (c). The step (a) comprises (a1) digesting the biomass into a lignin fraction and (hemi)cellulose fraction, and (a2) treating the fractions. The step (b) includes an extraction, in which the residual lignin is separated from the (hemi)cellulose fraction to obtain a second-lignin fraction (lignin II), before the step (a1), where the extraction takes place using supercritical carbon dioxide and/or at least an ionic liquid. In step (a), the solvent is at least partially replaced by up to 80% (preferably 50%) of supercritical carbon dioxide and/or at least an ionic liquid. In step (b), during the processing of the (hemi)cellulose fraction, the resulting carbon dioxide is completely supplied to the production of organo-mineral fertilizer in step (d). The property of the organo-mineral fertilizer is influenced by varying the temperature and/or the pressure of the nature of the nitrogen bond in the product. The step (b) comprises conversion of (hemi)cellulose fraction in ethanol or methane. The lignin of the lignin fraction is obtained from the step (a). The lignin is subjected with the residue of a biorefinery of the ammoxidation, where the residue corresponds to the residue from the step (b). The ammoxidation takes place by the addition of carbon dioxide, which is from a bio-refinery or step (b) or (a), when the solvent is replaced by supercritical carbon dioxide. The amount of carbon dioxide is selected such that the ratio of ammonium-nitrogen:amide nitrogen: solid organic nitrogen is adjusted in accordance with the requirements of the release rate of nitrogen of the organo-mineral fertilizer. The lignin is preoxidized with catalytic amounts of iron(II)- or copper(II)-salts and hydrogen peroxide, before the ammoxidation. Preferred Components: The ratio of ammonium nitrogen:amide nitrogen:solid organic nitrogen is changed by carbon dioxide addition, controlling the temperature and/or pressure and/or reaction time. ACTIVITY - Fertilizer.    MECHANISM OF ACTION - None given.    EXAMPLE - No suitable example given.