Three different microalgae strains were used for this study: two
marine species, N. gaditana and P. tricornutum, and a freshwater species,
C. sorokiniana. These species are potentially good candidates for biofuel
production since they have high photoautotrophic biomass and lipid
production rates and can grow to high densities (N10 g L−1) while
tolerating a wide range of conditions with regard to pH and temperature
[22,23].