EXTRACTION OF CO2 GAS FROM ENGINE EXHAUST

A photo-bioreactor is used for extraction of carbon dioxide from exhaust gases of an engine used for compression of natural gas by providing a series of vessels and in each contacting the gases with a labyrinthine flow of water containing photo-synthetic organisms. Each vessel receives the gases in series and is controlled to manage the temperature and dwell time to take into account the reducing CO2 content. The gases are introduced using directional diffusers at the bottom of the bath which generate a flow in the water. Each vessel has a separate water supply and harvesting system so that the excess organisms grown are extracted from each for harvesting. A gas recirculation system is controlled to manage the gas dwell time in the vessel. The divider walls contain the electrically powered lights between two transparent sheets.