Sustainable Biodiesel Production via Chlorella vulgaris and Tetraselmis chuii in food-based brewery Industrial Wastewater

Abstract

Abstract The microalgae Chlorella vulgaris and Tetraselmis chuii offer several attractive attributes as an aquaculture feed. Biomass production of T. chuii and C. vulgaris is relatively expensive because it requires high operation and substrate cost. Use of food industry waste is one of the promising solutions to reduce the substrate cost. In this research the impact of diverse concentration was filtered and centrifuged, food wastewater (FWW) was scrutinized as an alternative intermediate for microalgal bioremediation, lipid yield and cell growth. Both the tested species C. vulgaris and T. chuii showed highest lipid accumulation and cell growth at 75% level of food-based industrial wastewater with the maximum specific growth rate (0.27 d− 1), maximum biomass formation rate (0.1–0.18 gL− 1 d− 1) and lipid content (33.80 ± 0.88–35.04 ± 2.05%) respectively. The microalgal cells not only improved with food wastewater feeding but the level of COD (80.97–66.17%), BOD (81.13–66.81%), TN (55.88–22.06%) and certain heavy metals like zinc (99.72–99.52%), manganese (72.09–65.17%), nickel (50.68–34.41%), NO3N (50.68–42.59%), ferric (57.14–65.71%), cadmium (83.51–86.64%), lead (48.83–97.21%) and arsenic (55.13–55.00%) were also efficiently removed from food wastewater (FWW) at different diluted concentrations. C18:0/C18:1 was obtained as the major fatty acids in lipid which showed a vast potential of ADW007 for biodiesel fabrication and instantaneous bioremediation procedure using FWW.