Ethanol has increasingly attracted attention of researchers. Currently,
ethanol is synthesized by different routes, such as production from the synthesis gas,
ethylene hydration and fermentation of sugars. In addition, microalgae have been
recognized as the potential sources for biofuel production, since they reach high
biomass productivities. Recently, the use of microalgal biomass as feedstock for
bioethanol production became an interest for researchers and then for the general
public. Therefore, the aim of this chapter is to introduce the basics of algal-ethanol
production and the current status of this emerging bioethanol source.
Keywords: Bioethanol, Biomass, Chlamydomonas reinhardtii, Purple non sulfur
bacterium, Hybrid system.