Abstract: Disclosed herein are a pressure swing adsorption (PSA) separation-purification system and process integrated with a water gas shift reaction process. According to the invention, the adsorption/desorption heat of a PSA separation-purification device is controlled using a reaction effluent and a refrigerant of a water gas shift reaction process without using additional components such as a heat exchanger or a heating means or without changing the structure of a PSA separation-purification device, thus achieving the best separation-purification performance of the PSA separation-purification device.

Abstract: Provided are a method of extracting a biodiesel convertible lipid from microalgae using a supercritical carbon dioxide and a biodiesel convertible lipid extracted by the method. The lipid extraction method is an economical and environmentally friendly technique, which may considerably reduce an extraction time, compared to a conventional supercritical carbon dioxide extraction method, does not use the toxic organic solvents used in the conventional Bligh-Dyer extraction method and Soxhlet extraction method, and exhibits an excellent lipid yield and a FAME yield.