Development of operational strategies to remove carbon dioxide in photobioreactors

Jacob‐Lopes, Eduardo; Revah, Sergio; Hernández, Sergio; Shirai, Kohji; Franco, Telma Teixeira

doi:10.1016/j.cej.2009.06.025

Cited by 100 publications

(21 citation statements)

References 36 publications

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“…In addition, microalgae can be used to mitigate increasing CO 2 emissions, thus helping to reduce the greenhouse effect (Jacob-Lopes et al 2009). Microalgal-adsorbed CO 2 can be converted into a high calorific lipid (Chisti 2007;Scragg et al 2002Scragg et al , 2003Xu et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Factors affecting lipid accumulation by Nannochloropsis oculata in a two-stage cultivation process

et al. 2010

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Reserve lipids of microalgae are promising for biodiesel production. However, optimization of cultivation conditions for both biomass yield and lipid production of microalgae is a contradictory problem because required conditions for both targets are different. In this study, a twostage cultivation strategy is proposed to enhance lipid production of the microalga Nannochloropsis oculata. Biomass growth and lipid production were carried out in two separate and non-interacting stages. In first-stage cultivation, microalgae were cultivated in optimal conditions for cell growth. Then, microalgae were harvested and transferred into a growth-limited environment, thus enhancing lipid production of microalgae. Here, optimization of the lipid production stage (second stage) with respect to different levels of inoculum concentration, salinity of culture broth, and intensity of irradiance was performed. The results show that irradiance exhibits a significant influence on lipid production. The highest lipid productivity of 0.324 g L −1 day −1 was obtained with an inoculum concentration of 2.3 g L −1 , a salinity of 35 g L −1 , and an irradiance of 500 μmol photons m −2 s −1 . The final yield of lipid obtained from the two-stage process was 2.82-times higher than that from traditional single-stage batch cultivation systems.

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Section: Introductionmentioning

confidence: 99%

Factors affecting lipid accumulation by Nannochloropsis oculata in a two-stage cultivation process

et al. 2010

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“…a partir do efluente agroindustrial. Este melhor desempenho pode estar relacionado a uma maior homogeneidade do biorreator, uma vez que a mistura é favorecida pela maior turbulência no escoamento (JACOB-LOPES et al, 2009). Desta forma, vazões por unidade de volume (Q/V) de 0,5VVM serão consideradas como a condição de equilíbrio para a operação do biorreator heterotrófico, uma vez que resultará em menores requerimentos de potência para a operação do processo.…”

Section: Resultsunclassified

Avaliação De Diferentes Vazões De Ar Por Unidade De Volume Em Biorreatores Heterotróficos Microalgais Aplicados Ao Tratamento De Efluentes Agroindustriais

Teixeira¹,

Maroneze²,

Santos³

et al. 2015

Anais Do Congresso Brasileiro De Engenharia Química Em Iniciação Científica - Cobeq IC 2015

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RESUMO -A fase de cultura de um bioprocesso de microalgas tem a maior carga de energia, e uma parte significativa do consumo de energia está na aeração. Para a produção de bioprodutos a partir de microalgas, é essencial reduzir os requisitos de energia. O objetivo do trabalho foi avaliar a necessidades de aeração em biorreatores heterotróficos microalgais no tratamento de efluentes do abate e processamento de aves e suínos. Os experimentos foram realizados em biorreatores de colunas de bolhas, alimentados com 1,5L de efluente, 100mg.L -1 de inóculo, pH ajustado em 7,5, reator isotérmico operando a 25°C, aeração continua de 0,5, 1,0, 1,5 VVM e ausência de luminosidade. Os resultados obtidos demonstraram que a vazão por unidade de volume 1,5 VVM apresentou ligeiros ganhos de desempenho, porém a aeração de 0,5VVM pode ser considerada como o equilíbrio para a operação do biorreator por ter um requerimento de potência menor.

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“…The growth kinetics obtained in this present study in general show higher maximum specific growth rates and biomass productivities than those usually reported in photosynthetic cultures. In optimized conditions Jacob-Lopes et al [16] and Jacob-Lopes et al [9] for A. microscopica Nägeli cultivated photosynthetically in a bubble column reported values of 0.81 day À1 and 0.77 g/L day for maximum specific growth rate and biomass productivity, respectively, showing a superior performance of this cyanobacterium when cultivated heterotrophically. In addition, Çelekli and Yavuzatmaca [30] using similar methodology for estimation of photosynthetic growth of cyanobacteria Spirulina platensis found l max values of 0.81 day À1 .…”

Section: Indice Of Performance Equation Referencementioning

confidence: 96%

“…Factors such as photobioreactor configuration and material construction are considered the main difficulties [7][8][9]. On the other hand, open pond technology is limited by biological factors such as organism survival, growth and lipid content, carbon dioxide uptake, light utilization, seasonality, harvest, and biosafety of transgenics [10].…”

Section: Introductionmentioning

confidence: 99%

Single-cell oil production by cyanobacterium Aphanothece microscopica Nägeli cultivated heterotrophically in fish processing wastewater

et al. 2011

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Development of operational strategies to remove carbon dioxide in photobioreactors

Cited by 100 publications

References 36 publications

Factors affecting lipid accumulation by Nannochloropsis oculata in a two-stage cultivation process

Factors affecting lipid accumulation by Nannochloropsis oculata in a two-stage cultivation process

Avaliação De Diferentes Vazões De Ar Por Unidade De Volume Em Biorreatores Heterotróficos Microalgais Aplicados Ao Tratamento De Efluentes Agroindustriais

Single-cell oil production by cyanobacterium Aphanothece microscopica Nägeli cultivated heterotrophically in fish processing wastewater

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