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Influence of strain-specific parameters on hydrothermal liquefaction of microalgae
Barreiro, D.L.; Zamalloa, C.; Boon, N.; Vyverman, W.; Ronsse, F.; Brilman, W.; Prins, W. (2013). Influence of strain-specific parameters on hydrothermal liquefaction of microalgae. Bioresour. Technol. 146: 463-471. https://dx.doi.org/10.1016/j.biortech.2013.07.123
In: Bioresource Technology. Elsevier: Barking. ISSN 0960-8524; e-ISSN 1873-2976
Peer reviewed article  
Available in  Authors 
Keywords
    Marine/Coastal; Fresh water
Author keywords
    Microalgae; Hydrothermal liquefaction; Biofuel production
Authors  Top 
  • Barreiro, D.L.
  • Zamalloa, C.
  • Boon, N.
  • Vyverman, W.
  • Ronsse, F.
  • Brilman, W.
  • Prins, W.
Abstract
    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 °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 °C (from 17.6 to 44.8 wt%). At 375 °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.
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