Desenvolvimento preliminar de uma metodologia para o abastecimento de CO2 a culturas de Botryococcus braunii para a produção de biocombustíveis
Publicado 2015-12-30
Palavras-chave
- Microalgas,
- Botryococcus Braunii,
- CO2,
- Fotobiorreator,
- Lipídios e Hidrocarbonetos.
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Resumo
Estudos sobre o cultivo de microalgas em escala laboratorial e piloto tem sido o potencial para o cultivo desses microorganismos para a produção de matéria-prima na produção de biocombustíveis. Fornecer uma fonte de carbono para o cultivo em massa de microalgas representa um dos principais constrangimentos no processo de produção; estas fotossinteticamente fixar carbono inorgânico (CO2 ) e sintetizam metabólitos para a produção de biocombustíveis. O presente estudo avaliou a influência de diferentes parâmetros de fornecimento de CO2 nas culturas da espécie Botryococcus braunii em fotobiorreatores à escala laboratorial. Composto Central projetos experimentais foram propostos para correlacionar os parâmetros para avaliar e determinar o seu efeito sobre a diluição de CO2 e produção de metabólitos (biomassa, lipídios e hidrocarbonetos). Em relação aos parâmetros de projeto da fotobiorreator, alturas > 36cm, diâmetro < 7cm e tamanhos pequenos da bolha ajudam a aumentar a diluição de CO2 até 180%. Verificou que altas concentrações de CO2 (> 0,06v/vm) fornecido continuamente são ideais para o crescimento de células. Por outro lado, média de concentrações (0,04 - 0,06v/vm) de CO2 são ideais para a produção de lipídios e baixas concentrações de CO2 (≤ 0,02v/vm) favorecem a produção de hidrocarbonetos. Validada a tensão potencial de B. braunii colombiano para a produção de biodiesel, devido a suas altas taxas de síntese de lipídios.
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Referências
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