Apparatus for growing biological mass

An apparatus for growing biological mass has a container for accommodating and growing a biological mass, a unit for supplying liquid in the container, a unit for supplying CO2 in the container, a unit for supplying a feedstock in the container, and a cavitating device arranged so that a liquid is supplied from the unit for supplying liquids directly into the cavitating device and CO2 is supplied to the cavitating device directly from the unit for supplying CO2, so that in the cavitating device a mixture of liquid and CO2 is produced with a cavitation process, the cavitating device being connected with the container for supplying the mixed CO2 and liquid subjected to cavitation into the container.