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Microalgae production. Close-up of a pond containing Chlorella vulgaris microalgae at a landfill site. This site collects the methane gas released from household waste as it decomposes and burns it to produce electricity. The carbon dioxide released from the combustion of the waste is used to help grow microalgae, which are then used for biofuel production. The carbon dioxide (bubbles seen here) is pumped into ponds to promote photosynthesis and therefore growth of the algae. Photographed in Le Vigeant, France.
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