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1. (WO1991007080) PHOTOBIOREACTOR
Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

What is Claimed Is
1. A photobioreactor comprising:
(a) a tank for containing a liquid photosynthetic culture at a preselected operating level within said tank;
(b) a plurality of baffles each extending from one tank wall to an opposite tank wall, each of said baffles comprising optically transparent and generally planar walls having exterior light emitting surfaces and forming a hollow cavity therebetween;
(c) means for mounting said baffles within said tank such that the^hollow cavities are accessible from outside the tank wall which enables the insertion of light sources in said hollow cavities; and
(d) means for positioning said baffles in said tank spaced apart with said planar walls in generally parallel relation with each other.
2. The photobioreactor as set forth in claim 1 wherein said planar walls form major surfaces for emission of light into said tank and wherein said m jor surfaces are a major portion of the light emitting surfaces of the baffle.
3. The photobioreactor as set forth in claim 1 wherein said means for positioning comprises means for spacing apart said baffles such that substantially all the light emitted from the exterior surfaces is absorbed in the culture.
4. The photobioreactor as set fortli in claim 1 wherein said means for mounting comprises sealing ends of said baffles to the tank walls and wherein said cavities are accessible through an opening in at least said one tank wall.

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5. The photobioreactor as set forth in claim 1 wherein said light source is a plurality- of fluorescent tubes .
6. The photobioreactor as set forth in claim 1 including means for introducing a sparging gas to flow between at least some of said baffles.
7. The photobioreactor as set forth in claim 6 wherein said means for introducing a sparging gas is positioned between at least some of said baffles.
8. The photobioreactor as set forth in claim 5 including means for connecting said fluorescent tubes with an electrical power supply.
9. The photobioreactor as set forth in claim 5 wherein each of said baffles comprises at least one spacer for separating and supporting said fluorescent tubes .
10. The photobioreactor as set forth in claim 4 wherein said light source is insertable into said cavity through an opening in said one tank wall and said opposite tank wall.
11. The photobioreactor as set forth in claim 2 wherein each of said baffles is approximately two inches in width and 24 inches in height.
12. The photobioreactor as set forth in claim 3 wherein outer surfaces of adjacent baffles are
separated by a distance of approximately one inch.
13. The photobioreactor as set forth in claim 1 wherein said light source is a high intensity light source directed into a light compartment;
said light compartment comprising an internally reflective prismatic sheet extending substantially from said light to an end wall opposite said light, said compartment further comprising a mirror at an end opposite said light oriented to reflect light back into said compartment wherein said liglit, said reflective prismatic sheet and said mirror are arranged such that light from the source is distributed and emitted substantially uniformly from the exterior surfaces of said planar walls.
14. The photobioreactor as set forth in claim 1 wherein said tank and said baffles are generally rectangular in shape.
15. Λ photobioreactor comprising:
(a) a tank for containing a liquid photosynthetic culture;
(b) a plurality of light compartments each containing a high intensity light source;
(c) a plurality of baffles mounted within sai.<3 tank extending from one tank wall to an opposite tank wall and positioned in generally parallel relation to each other, each said baffle comprising substantially planar and optically transparent surfaces forming a hollow cavity which is accessible through an opening in the tank wall and enables the insertion of said light compartments into said cavity of each said baffle; and

(d) said light compartment comprising means for emitting and distributing light from said high
intensity light source substantially uniformally from the exterior surfaces of said planar walls.
16. The photobioreactor as set forth in claim 15 wherein said means for distributing and emitting light comprises an internally reflective prismatic sheet material extending substantially from said light to an end wall opposite said light and a mirror at an end opposite said light oriented to reflect light back into said compartment.

17. The photobioreactor as set forth in claim 15 including means positioned between at least some of said baffles for introducing a sparging gas.
18. The photobioreactor as set forth in claim 15 including means for connecting said high intensity light source with an electrical power supply.