Abstract: The invention is directed to a method for the production of biomass comprising the steps of (i) capturing CO2 from a CO2 containing gas stream, and subsequently reducing the captured CO2 to a reduced CO2 product; and (ii) an anaerobic fermentation, wherein a carbon substrate is used for the production of an organic feedstock; and (iii) an aerobic fermentation, wherein the organic feedstock is used for the production of biomass; wherein the reduced CO2 product is fed to the anaerobic fermentation and/or to the aerobic fermentation and the co-produced oxygen is fed to the aerobic fermentation.

Abstract: Process for the preparation of melamine, comprising a first mixing step in which at least two melamine-containing flows, originating from at least two different processes for the preparation of melamine, are brought into contact with each other, with a mixture being formed. In one embodiment, at least one melamine-containing flow contains melamine from a low-pressure gas-phase process for the preparation of melamine and at least one melamine-containing flow contains melamine from a high-pressure liquid-phase process for the preparation of melamine.