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Microalgae have attracted significant attention in biofuel research over recent years because of their rapid photosynthetic growth rates and the high lipid content achieved with certain species and culturing conditions. Most past research has focused on high-lipid algal species and increasing the lipid content in order to extract these lipids for conventional transesterification to biodiesel. High-lipid algae and the associated culturing conditions have often resulted in lower biomass productivities, thus limiting the potential yield of algae-based biofuel. An alternative approach is to culture fast-growing low-lipid algae and then convert the resulting biomass into bio-crude oil through a hydrothermal liquefaction (HTL) process. This article presents results for producing bio-crude oil via HTL conversion of Chlorella pyrenoidosa, a common fast-growing green microalgae species with low lipid content. The products of the HTL …