Systems and methods for deepwater photobioreactor

A method for cultivating a biomass using a deepwater photobioreactor system comprising:

• extending a vertical stack from an ocean floor toward an ocean surface, the vertical stack including an inlet conduit and an outlet conduit;
• transporting at least seawater via the inlet conduit;
• transporting at least the biomass via the outlet conduit;
• connecting a first photobioreactor at a first position along the vertical stack below the ocean surface via first ports in the inlet and outlet conduits, the first photobioreactor being in fluid communication with the inlet conduit and the outlet conduit;
• connecting a second photobioreactor at a second position along the vertical stack at a depth below the first photobioreactor via second ports in the inlet and outlet conduits, the second photobioreactor being in fluid communication with the inlet conduit and the outlet conduit;
• cultivating a first portion of the biomass using the first photobioreactor and a second portion of the biomass using the second photobioreactor;
• anchoring the vertical stack to the ocean floor via a mooring base connected to the bottom of the vertical stack;
• linking the outlet conduit to a seafloor pipeline;
• and
• outputting the first and second portions of the biomass from the outlet conduit to the seafloor pipeline.

A deepwater photobioreactor system comprising:

• a vertical stack extending from an ocean floor toward an ocean surface, the vertical stack including an inlet conduit and an outlet conduit, the inlet conduit arranged to transport at least seawater, the outlet conduit arranged to transport at least a biomass;
• a first photobioreactor in fluid communication with the inlet conduit and the outlet conduit and being connected to the vertical stack via first ports in the inlet and outlet conduits at a first position along the vertical stack below the ocean surface, the first photobioreactor arranged to cultivate the biomass, the first photobioreactor including at least one sensor arranged to generate sensor data based on at least one detected environmental condition;
• a second photobioreactor in fluid communication with the inlet conduit and the outlet conduit and being connected to the vertical stack via second ports in the inlet and outlet conduits at a second position along the vertical stack at a depth below the first photobioreactor, the second photobioreactor being arranged to cultivate a second portion of the biomass;
• a mooring base, connected to the bottom of the vertical stack and adjacent to the ocean floor, configured to link the outlet conduit to a seafloor pipeline and configured to anchor the vertical stack to the ocean floor;
• and
• a controller arranged to receive the sensor data and adjust environmental conditions by at least one of opening, closing, turning on, turning off, adjusting flow rate, adjusting mixing rate of one or more components of the first photobioreactor and/or adjusting light intensity of at least one light source of the first photobioreactor.