Treatment of gaseous effluent using a microalgae-based system

Autor: A. F. dos Anjos, M. Tiboni, A. C. Sakuma, J. D. Fontana, M. Soares, A. O. Rico, T. A. Pagioro, P. R. da Costa Neto
Rok vydání: 2021
Předmět:
Zdroj: International Journal of Energy and Water Resources. 5:237-245
ISSN: 2522-0101
2538-3604
Popis: High level of greenhouse gases emission is provoking the global warming. Several approaches have been proposed to the development of renewable and clean technologies, such as the biological CO2 mitigation methods mediated by autotrophic microalgae. Desmodesmus subspicatus and Devons mix microalgae were used to biomass production from gases and volatile compounds of a treatment system for the steakhouse smoke using open and closed photobioreactors, optimizing by two factorial designs. The efficiency of carbon oxides removal was calculated and the microalgae biomass was characterized. Smoke and structural configuration of the system were the most significant variables to increase the biomass production. Also, it was observed that, although Devons microalgae mix presented a slower growth as compared to D. subspicatus, the carbon amount removal was indeed larger in the former. D. subspicatus in closed regime presented 1.63 g L−1 of dry biomass (733.32 mg m−3 of Chl-a), a value about six times higher than in open cultivation. Similar result was observed with the Devons mix, which 1.27 g L−1 of dry biomass (690 mg m−3 of Chl-a) in the closed system, a value about three times higher than in the open system. In relation to the biomass composition, the D. subspicatus and Devon’s mix were analyzed concerning to total lipids (6.77 and 23.23%), carbohydrates (28.17 and 27.60%) and proteins (35.3 and 31.9%). These results indicated that both biomasses are interesting sources of nutrients and could be applied to industrial purposes.
Databáze: OpenAIRE
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