Assessment of Bio-oil Extraction from Tetraselmis chui Microalgae Comparing Supercritical CO2, Solvent Extraction, and Thermal Processing

Scott Grierson; Vladimir Strezov; Sargent Bray; Raffaella Mummacari; Luu Thai Danh; Neil Foster

doi:10.1021/ef2011222

Assessment of Bio-oil Extraction from Tetraselmis chui Microalgae Comparing Supercritical CO2, Solvent Extraction, and Thermal Processing

Scott Grierson, Vladimir Strezov^*, Sargent Bray, Raffaella Mummacari, Luu Thai Danh, Neil Foster

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

42 Citations (Scopus)

Abstract

Microalgae have significant capacity to fix CO ₂ and to become a major industrial biomass resource. Examining ways to innovate the microalgae cultivation and processing value chain includes a focus on the most efficient and economical means to produce a liquid oil fraction from the microalgae species. This work compares the use of organic solvent, supercritical carbon dioxide (SC-CO ₂), and pyrolysis to assess their relative capacity to derive oil from the marine microalgae Tetraselmis chui. The SC-CO ₂ technique was shown to be the least effective in natural oil extraction from T. chui. The results reveal that pure solvent extraction produces the most complete extraction of natural oil at just under 15% by weight. Subsequent pyrolysis of the post-solvent extraction residue and examination of the byproduct suggest that extraction of natural lipids prior to thermal processing increases the total quantity of bio-oil yield production by more than 11%.

Original language	English
Pages (from-to)	248-255
Number of pages	8
Journal	Energy and Fuels
Volume	26
Issue number	1
DOIs	https://doi.org/10.1021/ef2011222
Publication status	Published - 19 Jan 2012

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AU - Mummacari, Raffaella

AU - Danh, Luu Thai

AU - Foster, Neil

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Assessment of Bio-oil Extraction from Tetraselmis chui Microalgae Comparing Supercritical CO2, Solvent Extraction, and Thermal Processing

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