An unconventional two-stage cultivation strategy to increase the lipid content and enhance the fatty acid profile on Chlorella minutissima biomass cultivated in a novel internal light integrated photobioreactor aiming at biodiesel production (2020)
- Authors:
- USP affiliated authors: CASTRO, HEIZIR FERREIRA DE - EEL ; Silva, Messias Borges - EEL ; PRATA, ARNALDO MÁRCIO RAMALHO - EEL ; REIS, CRISTIANO EDUARDO RODRIGUES - EEL ; PEDRO, GUILHERME ARANTES - EEL
- Unidade: EEL
- DOI: 10.1016/j.renene.2020.04.084
- Subjects: BIODIESEL; REATORES BIOQUÍMICOS; MICROALGAS
- Keywords: Two-stage cultivation; Chlorella minutissima; Fatty acid; Bioreactor; Microalgae
- Agências de fomento:
- Language: Inglês
- Abstract: Biodiesel quality is dependent upon the fatty acids distribution of the raw material used in the trans/esterification reactions. While microalgae cells are regarded as potential oil suppliers for the biodiesel production chain, a common criticism is related to the low lipid productivities and often to a poor fatty acid distribution. In the present work we propose to submit microalgal cultivation to a second stage with nutritional stress by a simple addition of a 70% nitrate source depleted medium at the beginning of stationary phase, without harvesting cells, saving time and water. Chlorella minutissima was cultivated in a novel unconventional photobioreactor, named Internally Illuminated Integrated Photobioreactor (ILI-PBR), to verify the efficiency of the proposed strategy. Biomass concentration, lipid content and volumetric lipids productivity increased 24.9%, 120.7% and 55.6%, respectively, from Stage 1 to Stage 2, when ILI-PBR was illuminated by constant blue LED and 0.5 vvm of aeration. The fatty acid profiles, evaluated in terms of LED illumination (white, red and blue), showed a predominance of palmitic acid in all cases (59.49%, 57.28% and 46.51%, respectively), which allowed to enhance some biodiesel properties such as cetane number, cold filter plugging point, density and kinematic viscosity, according to international specifications.
- Imprenta:
- Source:
- Título: Renewable Energy
- ISSN: 0960-1481
- Volume/Número/Paginação/Ano: v. 156, p.591-601, 2020
- Este periódico é de assinatura
- Este artigo NÃO é de acesso aberto
- Cor do Acesso Aberto: closed
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ABNT
AMARAL, Mateus Souza et al. An unconventional two-stage cultivation strategy to increase the lipid content and enhance the fatty acid profile on Chlorella minutissima biomass cultivated in a novel internal light integrated photobioreactor aiming at biodiesel production. Renewable Energy, v. 156, p. 591-601, 2020Tradução . . Disponível em: https://doi.org/10.1016/j.renene.2020.04.084. Acesso em: 03 jan. 2026. -
APA
Amaral, M. S., Loures, C. C. A., Pedro, G. A., Reis, C. E. R., Castro, H. F. de, Naves, F. L., et al. (2020). An unconventional two-stage cultivation strategy to increase the lipid content and enhance the fatty acid profile on Chlorella minutissima biomass cultivated in a novel internal light integrated photobioreactor aiming at biodiesel production. Renewable Energy, 156, 591-601. doi:10.1016/j.renene.2020.04.084 -
NLM
Amaral MS, Loures CCA, Pedro GA, Reis CER, Castro HF de, Naves FL, Silva MB, Prata AMR. An unconventional two-stage cultivation strategy to increase the lipid content and enhance the fatty acid profile on Chlorella minutissima biomass cultivated in a novel internal light integrated photobioreactor aiming at biodiesel production [Internet]. Renewable Energy. 2020 ; 156 591-601.[citado 2026 jan. 03 ] Available from: https://doi.org/10.1016/j.renene.2020.04.084 -
Vancouver
Amaral MS, Loures CCA, Pedro GA, Reis CER, Castro HF de, Naves FL, Silva MB, Prata AMR. An unconventional two-stage cultivation strategy to increase the lipid content and enhance the fatty acid profile on Chlorella minutissima biomass cultivated in a novel internal light integrated photobioreactor aiming at biodiesel production [Internet]. Renewable Energy. 2020 ; 156 591-601.[citado 2026 jan. 03 ] Available from: https://doi.org/10.1016/j.renene.2020.04.084 - Ethyl esters (biodiesel) production by Pseudomonas fluorescens lipase immobilized on chitosan with magnetic properties in a bioreactor assisted by electromagnetic field
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Informações sobre o DOI: 10.1016/j.renene.2020.04.084 (Fonte: oaDOI API)
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