INVESTIGADORES
PEREDA Selva
congresos y reuniones científicas
Título:
Fatty acids recovery from microalgae for biodiesel production
Autor/es:
R. MONTERO; P. HEGEL; C. POPOVICH; C. DAMIANI; C. PEREDA; P. LEONARDI
Lugar:
Cartagena de India
Reunión:
Conferencia; III Iberoamerican Conference on Supercritical Fluids; 2013
Resumen:
The freshwatermicroalga Neochloris oleoabundans has been recognized as a promising oil feedstock, due to its capacity to accumulate lipids [1]. Particularly, recent studies pointed out the potential of N. oleoabundans, cultured in sea water, to produce triglycerides[2]. Taking into account these results, the aim of the present study was to investigate the hydrolysis of wet biomass of N. oleoabundans under subcritical water in liquid-vaporequilibria to recover fatty acids that can esterified in a second-step by supercritical methanol to obtain fatty esters or biodiesel. The only previous study related to fatty esters production in N. oleoabundans was reported by Levine et al.[3]. They used a modified, one-step in-situ transesterification procedure or a warm isopropyl alcohol (IPA, 95%) extraction coupled with acid-catalyzed. In this work the fatty acids recovery from wet microalgae with subcritical water is studied in a batch stainless steel reactor (14 cc). Different temperatures (523 K and 543 K)and water to algae mass ratios (3.5 g/g and 5.5 g/g)were analyzed at different reaction times in order to maximize the production of fatty acids.Yieldshigher than 15 wt. % fatty acids respect to the initial biomass processed were obtained. [1] Gouveia, L., Oliveira, C., Journal of Industrial Microbiology & Biotechnology 36, 2009, 269-274. [2] Popovich, C., Damiani, C., Constenla, D., Martinez, A., Freije, H., Martina, G., Simoneta, P., Leonardi, P. Bioresource Technology 2012, in press. [3] Levine, R., Costanza-Robinson, M.S., Spatafora, G.A. Biomass&Bioenergy, 35, 2011, 40-49.