Photobioreactor
AssigneeAveston Grifford Ltd.
InventorsAndreas Meiser, Miguel Verhein
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Abstract
A method of operating a closed photobioreactor for cultivation of phototrophic microorganisms. The photobioreactor comprises a culture liquid and is partially or completely surrounded by water of a water body. A density difference between the culture liquid and the surrounding water is provided so that the position of the photobioreactor in the water body is controlled. A closed photobioreactor for cultivation of phototrophic microorganisms. The photobioreactor is adapted to comprise a culture liquid and to be partially or completely surrounded by water of a water body. The photobioreactor comprises means for determining the density difference between the culture liquid and the surrounding water.
Claims20
A method for cultivating phototropic microorganisms in a photobioreactor comprising walls of a water tight, transparent, and flexible material forming a compartment, said method comprising the steps of:
- providing culture liquid, gas mixture and a culture of said phototropic microorganisms in said compartment of said photobioreactor;
- placing said photobioreactor on a surrounding body of water, and
- exposing said photobioreactor to solar radiation to allow the phototropic microorganisms to produce biomass,
- wherein the internal density of the culture liquid differs from the external density of said surrounding body of water, so that the density difference causes the photobioreactor to float on top of the surrounding body of water.
Dependencies are inferred from the claim text.