Title:
Steam Explosion in Microalgae Biorefining
Author(s):
Lorente, E., Clavero, E., Torras, C., Salvadó, J.
Document(s):
Paper
Abstract:
Various pre-treatment methods (autoclaving, ultrasound, microwave and steam explosion) have been compared to determine the most efficient method for the extraction of lipids from three different samples of microalgae (Nannochloropsis gaditana, Chlorella sorokiniana and Phaeodactylum tricornutum). Among the studied methods, steam explosion gave the highest lipid extraction yields for the three microalgae species. Therefore, the method was further studied and the application of acid catalysed steam explosion pre-treatment was investigated for simultaneous lipid extraction and sugar release from microalgae. The effect of different variables, including temperature and acid concentration, was analysed. The experimental results demonstrate the efficacy and feasibility of the acid catalysed steam explosion pre-treatment, followed by n-hexane lipid extraction. Besides, this study verified high efficiencies in the extraction of lipid of exploded microalgae using n-hexane against the low efficiencies obtained for the untreated microalgae.
Keywords:
biodiesel, bioethanol, microalgae, steam explosion, oil, sugars
Topic:
Biomass Conversion Technologies for Intermediates, Liquid and Gaseous Fuels, Chemicals and Materials
Subtopic:
Oil-based biofuels
Event:
22nd European Biomass Conference and Exhibition
Session:
3BO.3.1
Pages:
855 - 857
ISBN:
978-88-89407-52-3
Paper DOI:
10.5071/22ndEUBCE2014-3BO.3.1
Price:
FREE
