Journal
BIORESOURCE TECHNOLOGY
Volume 206, Issue -, Pages 290-293Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.01.115
Keywords
Biofuel; Hydrothermal liquefaction; Microalgae
Funding
- National Science Foundation [EFRI-0937992, DGE 1256260]
- University of Michigan Rackham Graduate School
- University of Michigan College of Engineering
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This study investigated the effects of algae species, reaction time, and reactor loading on the biocrude yield from fast hydrothermal liquefaction (HTL) of microalgae. Fast HTL reaction times were always less than 2 min and employed rapid heating and nonisothermal conditions. The highest biocrude yield obtained was 67 +/- 5 wt.% (dry basis). With all other process variables fixed, increasing the reaction time in a 600 degrees C sand bath by 15 s increments led to a rapid increase in biocrude yield between 15 and 45 s. At longer times, the biocrude yield decreased. Low reactor loadings generally gave higher biocrude yields than did higher loadings. The low reactor loadings may facilitate biocrude production by facilitating cell rupture and/or increasing the effective concentration of algal cells in the hot, compressed water in the reactor. (C) 2016 Elsevier Ltd. All rights reserved.
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