A new microalgae chlorella for production of vegetal oil for biodiesel and cogeneration power units

摘要

The present invention relates to the field of renewable bioenergy, and particularly addresses a novel method of producing biodiesel through two-stage culture of microalgae derived from Chlorella Vulgaris; those are cultivated under phototrophic and heterotrophic conditions, hence in two stages; phototrophic growth is obtained by exposing the microalgal culture to light and supplying it with CO₂; in order to sustain heterotrophic growth, the microalgal culture obtained in the phototrophic stage is concentrated (by centrifugation) and added with organic carbon in the form of glucose; this second technique is used to increase lipid accumulation and reduce lipid accumulation and large-scale vegetable oil and biodiesel production costs.