Improvement in microalgae lipid extraction using a sonication-assisted method

详细信息    查看全文

• 作者：Ana Maria Pereira Neto^a ; ^{ana.neto@ufabc.edu.br} ; Rafael Augusto Sotana de Souza^a ; Amanda Denisse Leon-Nino^a ; Joana D'arc Aparecida da Costa^a ; Rodolfo Sbrolini Tiburcio^a ; Thaí ; s Abreu Nunes^a ; Thaí ; s Cristina Sellare de Mello^a ; Fernando Takashi Kanemoto^b ; Flá ; via Marisa Prado Saldanha-Corrê ; a^b ; Sô ; nia Maria Flores Gianesella^b
• 关键词：Microalgae ; Biomass ; Cell disruption ; Lipid extraction ; Bioenergy
• 刊名：Renewable Energy
• 出版年：2013
• 出版时间：July, 2013
• 年：2013
• 卷：55
• 期：Complete
• 页码：525-531
• 全文大小：304 K

文摘

Oil extraction from microalgae stands as a huge challenge for bioproducts and biofuels production, mainly due to high costs and energy requirement. In this study, maximum cell density, growth curve, lipid content, daily biomass and oil productivities were determined for m>Chlorella minutissimam>, m>Thalassiosira fluviatilism> and m>Thalassiosira pseudonanam>, strains maintained at the Instituto Oceanogr¨¢fico of the Universidade de S?o Paulo. The microalgal dry biomass was used to evaluate the lipid extraction methodology regarding a sonication bath as pretreatment cell disruption technique followed by vortex mixing and m>nm>-hexane as solvent. The results showed a lipid content of 15.5 % ( % dry weight) for m>C.?minutissimam>, 40.3 % for m>T.?fluviatilism> and 39.5 % for m>T.?pseudonanam>. To determine the feasibility of using microalgae into the biofuel industry is essential to consider the daily biomass and oil productivities along with the lipid content, as could be evidenced in m>C.?minutissimam>. The results indicate that the sonication-assisted method with m>nm>-hexane was efficient for lipid extraction in these strains, suggesting a favorable potential for biodiesel production.