A Low-cost internal light integrated photobioreactor to cultivate the marine microalgae Chlorella minutissima (2019)
- Authors:
- USP affiliated authors: PRATA, ARNALDO MÁRCIO RAMALHO - EEL ; SILVA, MESSIAS BORGES - EEL ; AMARAL, MATEUS DE SOUZA - EEL ; PEDRO, GUILHERME ARANTES - EEL
- Unidade: EEL
- Subjects: MICROALGAS; CHLORELLA; REATORES BIOQUÍMICOS
- Language: Inglês
- Abstract: Aiming to reduce the effects of global warming caused by greenhouse gases accumulation in the atmosphere, especially carbon dioxide, many studies have been carried out to find new environmentally friendly raw materials for fuel production as an alternative to petroleum. The rationale is that CO2 emitted by biofuel burning is sequestered from the atmosphere and leads to new biomass formation. Microalgae are usefull organisms, once they can reduce atmospheric CO2 during cell growth and produce lipids for biodiesel production. As light is a crucial factor in photoautotrophic microalgae cultivation, there are many configurations of photobioreactors with different ways of light supply. Tubular photobioreactors are versatile and can be linked to bubble column or pound photobioreactors. Thus, in the present work we propose a novel photobioreactor that integrates bubble column and tubular configurations, both internally illuminated, for microalgae cultivation. The novelty is to combine specific operational parameters of each photobioreactor, occupying a small surface area. The proposed configuration was named Internal Light Integrated Photobioreactor (ILIPBR). Its performance was evaluated by photoautotrophic cultivation of Chlorella minutissima under three different light color (blue, white and red). All experiments were performed with 150 mg L -1 of initial cell concentration, 27±1 oC (room temperature), 0.5 vvm aeration, volumetric medium flow rate of 10 L min-1 , photoperiod of 24 h:0 h (light:dark). The cultivations were divided in two phases, both finishing up when stationary growth phase or death phase was detected: Phase 1 – Batch mode in Guillard f/2 culture medium without silica, and Phase 2 – Culture medium with microalgae from Phase 1 added with nutrients recommended by Guillard f/2 with 70% of nitrate starvation into the photobioreactor.Results showed that blue light provides the best growth of the microalgae cultured under the mentioned conditions in ILI-PBR: 230 g.m-2 against 180 and 125 g.m-2 for white and red, respectively. Also, lipid content using blue light (19%) was higher than using the others: 16 and 14.5%, respectively. It was concluded that the proposed integrated photobioreactor can be applied for the cultivation of microalgae once, even carrying out photoautotrophic crops, in a medium with low nutrient supply, a biomass concentration and a lipid content compared to that reported in literature was achieved. This fact shows that the proposed integration of two distinct already established photobioreactors is promising for future improvements regarding the algal biomass and lipid production and, consequently, for biofuel production.
- Imprenta:
- Publisher: Galoá Proceedings
- Publisher place: Uberlândia-MG
- Date published: 2019
- Source:
- Título: Anais do XXII Simpósio Nacional de Bioprocessos
- ISSN: 2447-2816
- Volume/Número/Paginação/Ano: p. 1, 2019
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ABNT
AMARAL, Mateus Souza et al. A Low-cost internal light integrated photobioreactor to cultivate the marine microalgae Chlorella minutissima. 2019, Anais.. Uberlândia-MG: Galoá Proceedings, 2019. p. 1. Disponível em: https://proceedings.science/p/103973?lang=en. Acesso em: 02 abr. 2026. -
APA
Amaral, M. S., Loures, C. C. A., Pedro, G. A., Prata, A. M. R., & Silva, M. B. (2019). A Low-cost internal light integrated photobioreactor to cultivate the marine microalgae Chlorella minutissima. In Anais do XXII Simpósio Nacional de Bioprocessos (p. 1). Uberlândia-MG: Galoá Proceedings. Recuperado de https://proceedings.science/p/103973?lang=en -
NLM
Amaral MS, Loures CCA, Pedro GA, Prata AMR, Silva MB. A Low-cost internal light integrated photobioreactor to cultivate the marine microalgae Chlorella minutissima [Internet]. Anais do XXII Simpósio Nacional de Bioprocessos. 2019 ; 1.[citado 2026 abr. 02 ] Available from: https://proceedings.science/p/103973?lang=en -
Vancouver
Amaral MS, Loures CCA, Pedro GA, Prata AMR, Silva MB. A Low-cost internal light integrated photobioreactor to cultivate the marine microalgae Chlorella minutissima [Internet]. Anais do XXII Simpósio Nacional de Bioprocessos. 2019 ; 1.[citado 2026 abr. 02 ] Available from: https://proceedings.science/p/103973?lang=en - Influência de diferentes comprimentos de onda da luz na produtividade celular e lipídica da microalga <i>Dunaliella salina<\i>.
- Microalgae Cultivation in Photobioreactors Aiming at Biodiesel Production
- Evaluation of cell growth performance of microalgae Chlorella minutissima using an internal light integrated photobioreactor
- Adjustment of the Operational Parameters of an Unconventional Integrated and Illuminated Internally Photobioreactor (ILI-PBR) for the Batch Autotrophic Cultivation of the Chlorella minutissima, Using the Taguchi Method
- Evaluation of fatty acids production by Chlorella minutissima in batch bubble-column photobioreactor
- Cultivo da microalga marinha Chlorella sp. como fonte de matéria-prima para a produção de biodiesel
- Cultivo da microalga marinha Chlorella minutissima em fotobiorreator integrado (coluna de bolhas - tubular) internamente iluminado visando à obtenção de biomassa para a produção de biodiesel
- Obtenção de 2,3-butanodiol a partir de hidrolisado hemicelulósico de eucalipto em regime descontínuo alimentado
- Síntese de ésteres etílicos de ácido graxos por transesterificação direta de biomassa de microalga marinha Chlorella minutissima
- In Situ Transesterification of Microbial Biomass for Biolubricant Production Catalyzed by Heteropolyacid Supported on Niobium
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