Difference between revisions of "Team:Calgary/PHB Fermentation"
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Revision as of 15:53, 5 October 2017
PHB Fermentation
The genetically engineered bacteria would be contained in the stirred tank bioreactor at room temperature on Mars (22 degrees Celsius) and anaerobic conditions. A continues flow of VFA rich stream is generated by the pump. The volume of the tank is 5L to account for the overflow and liquid recycling.
The output stream, which contains some of the bacteria, secreted PHB and unused VFAs passes through a mechanical self-cleaning filter (0.2 micron filter scale) to remove and recycle the bacteria back into the bioreactor. This setup was selected because it is very ESM friendly and eliminates fouling issues associated with membrane bioreactors (which was the second best option considered). The liquid output from the self-cleaning filter then flows into the final stage of the process – PHB extraction.
