Gasification of Microalgae in Supercritical Water, First Experimental Results

N. Boukis, A. Möbius, S. Hindersin & M. Kerner
Microalgae (Scenedesmus obliquus) produced in flat panel photobioreactors were converted via supercritical water gasification at 650°C, 28 MPa and a residence time of 3 minutes. The long term aim is to gain a higher process efficiency through recycling of byproducts of supercritical water gasification and waste water during the cultivation of microalgae. The first step of the project, the general feasibility of conversion of microalgae via supercritical water gasification to a hydrogen-rich combustible gas is...