Abstract
Biofuel production from microalgae requires energy efficient processes for extracting and converting triacylglyceride lipids to fuel, compatible with coproduction of protein feeds and nutraceuticals. Wet solvent extraction involves mechanical cell rupture, lipid extraction via solvent contacting, physical phase separation, thermal solvent recovery, and transesterification. A detailed analysis of the effect of key process parameters on the parasitic energy demand of this process was performed. On a well-to-pump basis, between 16% and 320% of the resultant biodiesel energy was consumed depending solely on the process parameters. Highly positive energy balances can be achieved, but only if a correctly designed process is used. This requires processing concentrated biomass (ca 25%w/w) with a high triacylglyceride content (ca 30%w/w), and an efficient extraction process employing a non-polar solvent, low solvent-to-paste ratio, and efficient energy recovery. These requirements preclude many laboratory scale processes and polar co-solvents as viable options for large-scale biofuel production.
References
Jan 1, 1991·Biotechnology Advances·S T Harrison
Mar 7, 2006·Water Research·Satinder K BrarR Y Surampalli
Aug 7, 2008·Biotechnology and Bioengineering·Liliana RodolfiMario R Tredici
Apr 24, 2009·Bioresource Technology·Jae-Yon LeeHee-Mock Oh
Sep 22, 2009·Environmental Science & Technology·Laurent LardonOlivier Bernard
Aug 3, 2010·Bioresource Technology·Michael J CooneyRonald Pate
Oct 12, 2010·Bioresource Technology·Carlos ZamalloaWilly Verstraete
Jan 22, 2013·Biotechnology and Bioengineering·Ian L D OlmsteadGregory J O Martin
Mar 5, 2013·Eukaryotic Cell·Diana SimionatoTomas Morosinotto
May 22, 2013·Bioresource Technology·Erin M SpidenGregory J O Martin
Oct 2, 2013·Bioresource Technology·Ian L D OlmsteadGregory J O Martin
Jun 10, 2014·Ultrasonics Sonochemistry·Raquel Rezende dos SantosCláudia Maria Luz Lapa Teixeira
Jul 25, 2014·Bioresource Technology·María J Jiménez CallejónEmilio Molina Grima
Dec 2, 2014·Bioresource Technology·Benjamin H J YapGregory J O Martin
Dec 3, 2014·Bioresource Technology·Jason C Quinn, Ryan Davis
Citations
Nov 29, 2017·Topics in Current Chemistry·Yong ChenZheng Sun
May 29, 2019·Engineering in Life Sciences·Minrui GuoJiluan Chen
Dec 7, 2019·Ultrasonics Sonochemistry·R M González-BalderasM T Orta Ledesma
Jan 16, 2021·Journal of Colloid and Interface Science·Bhagya YatipanthalawaGregory J O Martin
Dec 23, 2016·Bioresource Technology·Godwin SeveraMichael J Cooney
May 26, 2021·The Science of the Total Environment·Ruolan ZhangZhanyou Chi