TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preferred Process: In producing biomass and products derived from it, each of the rejections is stored in a separate continuous agitation and aeration or air mixture prior to its reincorporation to CO2 unit. The gas stream is a stream of CO2 or a mixture of gases from a combustion process. The gas stream is cooled, washed, and compresses the remaining CO2 gas is separated prior to their introduction into the photobioreactor. The gas stream is mixed with compressed air before its introduction into the photobioreactor. It is injected radially into the photobioreactor and discontinuously in pulses of duration between 1 and 3600 seconds at time intervals between 1 to 3600 seconds, including both limits. It is injected in an amount of between 0.2 m3/m3 and 2 m3/m3 of cultures. The nutrients with the water enriched stream are macronutrients, micronutrients and/or trace elements in a percentage between 10% and 30% by weight of the biomass. The nutrients are selected from nitrogenous salts such as ammonium nitrate, phosphates and its combination. The stream is rotated inside the photobioreactor in contrast to injection of the gas flow direction when the two are brought into contact. Culture is maintained within the photobioreactor at a temperature between 5 degrees C and 45 degrees C. Cultivation of algae within the photobioreactor is maintained until reaching a concentration of 100 million cells/ml to 600 million cells/ml. Daily amount of between 2% and 50% of the total volume of culture within the photobioreactor is extracted. Mechanical separation to obtain crop biomass is performed by centrifugation, ultra-centrifugation, decantation and/or filtration processes, and chemical separation is by flocculation. Foam is formed on the upper layer of the water stream into the photobioreactor as a result of the reintroduction to the same rejection treated, the foam comprises biomass and/collected nutrients in a percentage between 1% and 5% of the existing volume in the photobioreactor. The strain of algae is selected from Cyanobacteria, Chlorophyceae, Rhodophyceae, xanthophytes and its combination. The bio crude undergoes cavitation, decantation, pressing and/or separate heat treatment for biofuel and a rejection unit. Rejection is obtained by the biofuel leading to a storage unit with continuous stirring and aeration or CO2 air mixture, and subjected to physical and chemical treatment based on adequacy of salinity, pH, microfiltration, disinfection and nutrient addition, for subsequent reintroduction into the crop. Preferred Plant: In the plant, the storage units of the permeate and the rejection unit comprise unit of aeration and agitation or air injection into CO2. The plant further comprises an injection unit of compressed air connected to the scanning unit. Each photo bioreactor further comprises an electric pump which turns the water stream in a counter-current injection of gas direction when both are placed in contact within bioreactors. The plant also comprises 2-5000 photobioreactors. Photobioreactor is constituted by an outer tube and an inner delimiting a space between them. The assembly is configured in photobioreactors in three areas defined as follows: a mixing zone of the gas stream, a zone of growth of the culture of algae, and an extraction area of growing inside the photobioreactor which is constituted by a third group of photobioreactors. The photobioreactor further comprises an automatic device for cleaning the walls of the tubes that define the space between the inner tube and the outer tube. It also comprises a translucent tube concentrically covering the external wall of the outer tube. It further comprises unit for collecting foam formed in the upper layer of the water stream. The photobioreactor comprises upper hand in capturing unit for CO2 excess not consumed by growing algae. Bioreactors are interconnected by pipes buried in the ground where the plant is located, being the water stream with the cultivation of a photobioreactor driven by another electric pump. The photobioreactor comprises unit for temperature control and heat pump type air condensed water and/or geothermal, to maintain the parameter between 5 degrees C and 45 degrees C. The plant incorporates unit for cleaning and disinfection in line pipework and charge pumps replacement process and the extraction of culture in bioreactors and recovery processes rejections and exchanges in various deposits. It further comprises an accumulation chamber for stored and processed rejections. It also comprises collecting unit formed by leachate. The collection unit of leachate and effluent are connected to an accumulator chamber of rejections. The plant comprises control unit formed by process sensors, flow meters, valves and common elements. EXAMPLE - No suitable example given.