Closed photobioreactor and method of use

Chemistry: molecular biology and microbiology – Condition responsive control process

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Details

435168, 435243, 435257, 435284, 435289, 435311, 435313, 435315, 435813, 47 14, C12N 112, C12Q 300, C12M 134

Patent

active

051513471

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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