Third generation biodiesel production from microalgae

Ciência Rural

Jacob-Lopes, Eduardo¹  Zepka, Leila Queiroz¹  Francisco, Érika Cristina²  Maroneze, Mariana Manzoni¹  Franco, Telma Teixeira³ 

[1] Universidade Federal de Santa Maria, Santa Maria, Brasil;Universidade de Passo Fundo, Passo Fundo, Brazil;Universidade Estadual de Campinas, Campinas, Brasil

关键词: biodiesel;    microalgae;    heterotrophic cultivation;    cassava starchINTRODUÇÃO:A grande dependência pelos combustíveis fósseis levou ao surgimento de discussões sobre questões como a poluição atmosférica e a escassez dos recursos energéticos;    direcionando ao desenvolvimento de tecnologias para a obtenção de fontes de energias alternativas e renováveis;    como os biocombustíveis de 1a a 4a geração (MARTÍN & GROSSMANN;    2012);   

DOI  :  10.1590/0103-8478cr20131222

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

The aim of the study was to evaluate the third generation biodiesel produced from heterotrophic cultivation of the microalgae Phormidium sp. employing cassava starch as source of organic carbon. An experimental design was performed to determine the optimal conditions of temperature and C/N ratio. From the best growing conditions, was developed cultivations in batch and fed-batch in a bioreactor and evaluated the biodiesel quality. The results indicate that the temperature of 30ºC and the C/N ratio of 68 are the ideal conditions of the process. The highest biomass productivity (50.41mgL-1h-1) and lipid productivity (7.49mgL-1h-1) were obtained in batch cultivations. The fatty acids most representative were caproic acid (65.29%) and oleic acid (23.88%). The fuel properties of biodiesel: ester content of 99.9%, cetane number of 54.88, iodine value of 21.47gI100g-1, unsaturation degree of 23.88% and a cold filter plugging point of 39.21ºC, comply with the main international and national standards

【 授权许可】

Unknown