PROCESS FOR PRODUCING BIOMASS AND PRODUCTS DERIVED THEREFROM BY CULTIVATING UNICELLULAR ALGAE IN AN AQUEOUS MEDIUM SUPPLIED WITH A CO2 CURRENT, AND PLANT DESIGNED FOR THIS PURPOSE

摘要

The invention relates to a process comprising cultivating unicellular algae in an aqueous medium in a set of photobioreactors with injection of a gas current containing CO 2 , characterised in that it also comprises accumulating the culture of unicellular algae following the extraction thereof, and subjecting said culture to successive treatment steps by which means biomass with a humidity degree of between 0 % and 90 % is obtained (mechanical and/or chemical extraction), and subsequently said biomass is subjected to extractions of lipids and/or fatty acids and a first reject (decantation and/or cavitation), of biooil and/or bio-crude and a second reject (low-temperature direct heat liquefaction) and of biofuel (cavitation, decantation and/or heat treatment), in such a way that the various rejects are stored, treated physico-chemically and reincorporated into the process as a raw material. The invention also refers to a facility of photobioreactors designed for such a purpose, comprising separate chambers for each biomass and product extraction method, and for storing the rejects.