Journal
BIOENERGY RESEARCH
Volume 14, Issue 1, Pages 241-253Publisher
SPRINGER
DOI: 10.1007/s12155-020-10160-5
Keywords
Synthetic wastewater; Molasses; Triacylglycerides; Transesterification; Algal metabolites
Categories
Funding
- ASA-CONACYT [243145]
- CONACYT [338220]
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The cultivation of green microalga Coelastrumsp. using industrial wastes like molasses and synthetic wastewater showed improved biomass and lipid content, making it a suitable feedstock for producing green diesel, bio-jet fuel, or biodiesel.
The development of biofuels as an alternative to the use of fossil fuels is growing worldwide due to environmental concerns and energy independence; thus, considerable technical progress has been achieved in biofuel production. Microalgae have been widely used for nutrient removal during wastewater treatment and produce compounds that can be used as feedstock for biofuel synthesis. In this work, the green microalgaCoelastrumsp. was cultivated using industrial wastes: molasses as the carbon source and synthetic wastewater as the culture medium to determine the potential of its use for biofuel production. The use of synthetic wastewater (SWW) and molasses improved biomass production when compared with cultures carried out in a standard laboratory culture medium, such as tris-acetate-phosphate (TAP). Growth rates of 0.31 and 1.4 day(-1)were attained during exponential growth rate with SWW and molasses and TAP media, respectively. The best results in biomass and lipid content, 2.29 +/- 0.05 and 0.71 +/- 0.03 g L-1, were obtained after 15 days of culture in SWW with molasses. The analysis of the lipid profile, produced byCoelastrumsp. cultured under these conditions, determined that the microalga can be considered as a high-quality feedstock for producing green diesel, bio-jet fuel, or biodiesel.
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