期刊
ENERGY EXPLORATION & EXPLOITATION
卷 36, 期 6, 页码 1546-1555出版社
SAGE PUBLICATIONS INC
DOI: 10.1177/0144598718777107
关键词
biofuel; bio-oil; microalgae; hydrothermal liquefaction; preliminary treatment
资金
- Russian Science Foundation [17-19-01617]
- Russian Science Foundation [17-19-01617] Funding Source: Russian Science Foundation
Hydrothermal liquefaction of different microalgae samples (Arthrospira platensis cultivated by our research group) - fresh (directly after harvesting), dried and frozen - have been performed. In hydrothermal liquefaction process, the samples were heated up to 300 degrees C for 30 min and kept at a constant temperature for 60 min. Then dichloromethane was added to the samples to extract the oil fraction. The products obtained after aqueous and dichloromethane solutions evaporation are referred to as water soluble organics and bio-oil correspondingly. The experiments on hydrothermal liquefaction of microalgae pre-treated in different ways were conducted for three independent harvest samples. The average values of bio-oil yield in the experiments with fresh, dried and frozen microalgae were equal to 44.07%, 39.97% and 39.65%, respectively. The average yields of water soluble organics were equal to 19.34%, 29.00% and 21.43% respectively. In all the experiments, the highest yield of bio-oil was reached for fresh microalgae. From this point of view, direct hydrothermal liquefaction processing of fresh microalgae seems to be more preferable that further enhances the advantage of hydrothermal liquefaction in comparison with other biomass-to-biofuel conversion methods.
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