Potential of the microalga Dunaliella Tertiolecta BUTCHER to generate biofuels and bioremremediation of effluent from anaerobic reactor
DOI:
https://doi.org/10.6008/CBPC2179-6858.2020.004.0017Keywords:
biomass, UASB, optimizationAbstract
The microalgae Dunaliella tertiolecta BUTCHER is presented as a possible source of biomass for biofuel production, especially due to its potential for lipid production. Aiming to optimize the cellular development of this microalgae in order to verify its potentiality in the production of lipids, F/2 synthetic medium with diverse pH (5,5; 6,5; 7,5; 8,5 and 9,5) supplemented with effluent of reactor type UASB (in the following proportions: 0, 25, 50, 75 and 100%) was used, using four different luminosity intensities (6, 12, 18 and 24 hours). It was perceived a better cell growth response of D. Tertiolecta BUTCHER when subjected to intervals of 12 hours of exposure to light, at PH 7.23 with a concentration of effluent of UASB in a proportion of 25%, verifying, under these conditions, a removal of 40.23% of COD. Regarding the lipid concentration, a lipid content of 10.64% was obtained from this microalgae cultivation in F/2 medium and 8.13% lipid content when cultivated with 25% effluent of the UASB reactor. D. tertiolecta BUTCHER, when grown in an alternative culture medium presents a better bioremediation profile compared to its biofuel generation potential, verified from the reduction of lipid content.
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