Green microalgae,is characterized by its considerable hydrocarbon production [1].However,established methods for extraction of these hydrocarbons are limited due to low efficiency and laborious culture.This study presents solvent recycling as a novel extraction method to improve hydrocarbon recovery yield from cultures of braunii.A photobioreactor was designed with devices to operate the solvent recycling extraction process.Hydrocarbon recovery yield using this method was 2.5-fold higher than the existing two-phase extraction.The method herein successfully reduced clump formation and moreover,could be used to regenerate algal cells after three cycles of the extraction process.Accordingly,solvent recycling could recover the hydrocarbons without serious cell damage by an upstream solvent.