If concentrated algal biomass is to be transformed into biodiesel, the oils must be extracted. The biomass is commonly dried first. Solar drying is assumed to be the best method in tropical countries due to intensive sunlight [1]. The use of natural gas for drying has been considered, but dependency on fossil fuels to dry microalgal biomass threatens the commercial viability of the resulting biofuels. Consequently, it is important to search for other processes with partial or no drying of the algal biomass before lipid extraction [1]. Unlike biomass from crop sources, microalgal biomass presents lipid extraction challenges are difficult due tothe presence of thick cell walls that prevent the release of intra-cellular lipids [1]. Lipid extraction from algal biomass achieved through solvent extractions, physical methods, or a combination of the two [2]. Thermochemical processes have also been proposed. Descriptions, advantages, and disadvantages of each technology are shown in Table 4.