The high biomass production and in some cases of high lipid
productivity that have been demonstrated in many of the reviewed
studies of wastewater-grown microalgae suggests that there is real
potential in the utilization of these high nutrient resources for
cost-effective biofuel production (Pittman et al., 2011; Razzak
et al., 2013; Singh and Gu, 2010; Wu et al., 2014). However, there
are some limitations that need to be addressed when wastewater
used as the nutrients for microalgae cultures.