Journal
AICHE JOURNAL
Volume 63, Issue 5, Pages 1494-1502Publisher
WILEY
DOI: 10.1002/aic.15537
Keywords
flash hydrolysis; FAME profile; high-ash microalgae; direct nutrient recycling; Nannochloropsis gaditana
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Funding
- National Science Foundation (NSF CAREER) [CBET-1351413]
- ERC [309485]
- PRIN [2012XSAWYM]
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [1351413] Funding Source: National Science Foundation
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The cost-effective production of liquid biofuels from microalgae is limited by several factors such as recovery of the lipid fractions as well as nutrients management. Flash hydrolysis, a rapid hydrothermal process, has been successfully applied to fractionate the microalgal biomass into solid biofuels intermediates while recovering a large amount of the nutrients in the aqueous phase (hydrolyzate) in a continuous flow reactor. The aim of the work is to enhance the quality of a high-ash containing marine algae Nannochloropsis gaditana as biofuel feedstock while recycling nutrients directly for algae cultivation. Characterization of products demonstrated an increase in extractable lipids from 33.5 to 65.5 wt % (dry basis) while retaining the same fatty acid methyl ester profile, in addition to diminution of more than 70 wt % of ash compared to raw microalgae. Moreover, the hydrolyzate was directly used to grow a microalga of the same genus. (C) 2016 American Institute of Chemical Engineers AIChE J
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