期刊
BIORESOURCE TECHNOLOGY
卷 146, 期 -, 页码 463-471出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.07.123
关键词
Microalgae; Hydrothermal liquefaction; Biofuel production
资金
- Fundacion Pedro Barrie de la Maza (Galiza, Spain)
- Institute for the Promotion of Innovation by Science and Technology - Strategic Basic Research (IWT-SBO) Sunlight Project - Lipid-based, high value products and renewable energy from microalgae [80031]
- Ghent University [179I16D9W]
- Ghent University Multidisciplinary Research Partnership (MRP) - Biotechnology for a sustainable economy [01 MRA 510W]
Algae are an interesting feedstock for producing biofuel via hydrothermal liquefaction (HTL), due to their high water content. In this study, algae slurries (5-7 wt% daf) from different species were liquefied at 250 and 375 degrees C in batch autoclaves during 5 min. The aim was to analyze the influence of strain-specific parameters (cell structure, biochemical composition and growth environment) on the HTL process. Results show big variations in the biocrude oil yield within species at 250 degrees C (from 17.6 to 44.8 wt%). At 375 degrees C, these differences become less significant (from 45.6 to 58.1 wt%). An appropriate characterization of feedstock appeared to be critical to interpret the results. If a high conversion of microalgae-to-biocrude is pursued, near critical conditions are required, with Scenedesmus almeriensis (freshwater) and Nannochloropsis gaditana (marine) leading to the biocrude oils with lower nitrogen content from each growth environment. (c) 2013 Elsevier Ltd. All rights reserved.
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