US Patent:
20110281340, Nov 17, 2011
Inventors:
Christopher Wayne TURNER - Windsor CO, US
Bryan Rhea MCCARTY - Fort Collins CO, US
Peter Allen LETVIN - Fort Collins CO, US
Bryan Dennis WILLSON - Fort Collins CO, US
Daniel Robert HERBOLDSHEIMER - Fort Collins CO, US
International Classification:
C12N 1/12
C12M 1/04
C12M 1/00
Abstract:
A top reference photobioreactor system according to an embodiment of the present invention includes a flexible floating photobioreactor having a buoyancy tube filled with a gas that is less dense, and a ballast tube filled with a substance, such as saltwater, that is more dense, than the liquid in which the photobioreactor floats. A top reference photobioreactor method according to an embodiment of the present invention includes controlling a depth of the top reference photobioreactor by controlling a volume and/or density of ballast in the ballast tube and/or by controlling a volume and/or density of gas in the buoyancy tube.