Potential of Algae-based Wastewater for Biodiesel Production

فاقد چكيده فارسي

Microalgae have been proposed as a potential source for biodiesel production. The main objective of this study was to screen appropriate microalgae strains from wastewater for biodiesel production. In the present study, a number of algal strains grown in wastewater extracted from aerated and facultative lagoons of Parkandabad wastewater treatment plant, were isolated and four different strains of Chlorella sp. (A-Ch1, A-Ch2, F-Ch3, and F-Ch4) were identified based on morphological characteristics. Samples from aerated (A-R), facultative (F-R), and the four isolated strains were inoculated in BG-11 medium and growth curve, lipid content, biomass and lipid productivities of each experiment were investigated. The cultivation of A-R and F-R samples led to lipid contents of 16.6% and 12.2%, respectively with moderate amount of biomass dry weights. The strains of A-Ch2, F-Ch3, and F-Ch4 could accumulate relatively high lipid contents of 35.5%, 26.3%, and 38.2%, respectively that resulted in high lipid productivities. Moreover, F-Ch4 had the highest biomass and lipid productivities of 0.24 g.L-1.day-1 and 91.96 mg.L-1.day-1 among the strains, respectively. Therefore, the urban wastewater can be utilized as a suitable feedstock for biodiesel production because of the presence of microalgal strains with high lipid content and productivity.