Closed photobioreactor and method of use
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United States of America Patent
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Sep 29, 1992
Grant Date -
N/A
app pub date -
Nov 27, 1989
filing date -
Nov 27, 1989
priority date (Note) -
Expired
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Abstract
An apparatus is disclosed for the controlled production of microorganisms by photosynthesis in a closed photobioreactor. The closed photobioreactor contain a photosynthetic culture in a substantially sealed environment and provides a system for recirculating the reactant gas through the culture. This closed loop system can be operated with expensive carbon isotopes (i.e., .sup.13 CO.sub.2 or .sup.14 CO.sub.2). Also, a system is provided for removing the molecular oxygen produced in the photosynthesis reaction from the closed photobioreactor. Furthermore, a pH-regulated control valve is utilized for controlling the addition of reactant gas to the culture in response to the alkalization of the culture.
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