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The CO2 microalgae biorefinery: high value products from low value wastes using halophylic microalgae in the D-factory. Part1: tackling cell harvesting

The CO2 microalgae biorefinery: high value products from low value wastes using halophylic microalgae in the D-factory. Part1: tackling cell harvesting

Harvey, P. J. ORCID: 0000-0001-7193-4570, Abubakar, A., Xu, Y., Bailey, D., Milledge, J. J. ORCID: 0000-0003-0252-6711, Swamy, R. A. R., Vieira, V. V., Harris, G., Hoekstra, H., Goacher, P., Crespo, J., Reinhardt, G., Martinelli, L., Pipe, R., Schroeder, D. C., Igl-Schmid, N., Kokossis, A., Ben-Amotz, A. and Persson, K. (2014) The CO2 microalgae biorefinery: high value products from low value wastes using halophylic microalgae in the D-factory. Part1: tackling cell harvesting. In: Proceedings of the 22nd EUBCE - Hamburg 2014. ETA-Florence Renewable Energies, Florence, Italy, p. 360. ISBN 978-88-89407-52-3 ISSN 2282-5819

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Abstract

Fuel-only algal systems are not currently economically feasible. Biorefineries which integrate biomass conversion processes and equipment to produce fuels, power and chemicals from biomass, offer a solution. The CO2 microalgae biorefinery (D-Factory) is cultivating strains of Dunaliella in highly saline non-potable waters in photobioreactors and open raceways and applying biorefinery concepts and European innovations in biomass processing technologies to develop a basket of compounds from Dunaliella biomass. Driving down costs by recovering the entire biomass of Dunaliella cells from a saline environment poses one of the many challenges because Dunaliella cells are both motile, and do not possess an external cell wall, making them highly susceptible to cell rupture. In this paper we tackle the problem of harvesting cells intact to recover and process the entire biomass of Dunaliella cells cultivated. Results show a centrifugal g force lower than 5000 g caused little cell disruption, while a g force higher than 9000 g led to ~40% loss of the intact cells and commensurate loss of the intracellular cytosolic marker, glycerol. By contrast using spiral plate technology to harvest the cells recovered >90% of the cells intact.

Item Type: Conference Proceedings
Title of Proceedings: Proceedings of the 22nd EUBCE - Hamburg 2014
Uncontrolled Keywords: microalgae, biorefinery, harvesting, cultivation, biofuel
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Department of Life & Sports Sciences
Related URLs:
Last Modified: 23 Nov 2017 10:15
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/12332

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