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Title: Design of an airlift loop bioreactor and pilot scales studies with fluidic oscillator induced microbubbles for growth of a microalgae Dunaliella salina
Authors: Zimmerman, William B.
Zandi, Mohammed
Bandulasena, Hemaka C.H.
Tesar, Vaclav
Gilmour, D. James
Ying, Kezhan
Keywords: Nanobubbles
Microbubbles
Nonlinear wave dynamics
Microfluidics
Microalgae
Airlift loop bioreactor
Issue Date: 2011
Publisher: © Elsevier
Citation: ZIMMERMAN, W.B. ... et al, 2011. Design of an airlift loop bioreactor and pilot scales studies with fluidic oscillator induced microbubbles for growth of a microalgae Dunaliella salina. Applied Energy, 88 (10), pp. 3357 - 3369
Abstract: This study was conducted to test the feasibility of growing microalgae on steel plant exhaust gas, generated from the combustion of offgases from steel processing, which has a high CO content. Two field trials of batch algal biomass growth, mediated by microbubble transfer processes in an airlift loop bioreactor showed only steady growth of biomass with 100% survival rate. The gas analysis of CO uptake in the 2200L bioreactor showed a specific uptake rate of 0.1g/L/h, an average 14% of the CO available in the exhaust gas with a 23% composition of CO. This uptake led to a steady production of chlorophyll and total lipid constituency in the bioreactor, and an accelerating exponential growth rate of biomass, with a top doubling time of 1.8days. The gas analysis also showed anti-correlation of CO uptake and O production, which along with the apparent stripping of the O to the equilibrium level by the microbubbles, strongly suggests that the bioreactor is not mass transfer limited, nor O inhibited. Removing O inhibition results in high growth rates and high density of biomass. © 2011 Elsevier Ltd.
Description: This article was published in the journal, Applied Energy [© Elsevier]. The definitive version is available at: http://dx.doi.org/10.1016/j.apenergy.2011.02.013
Version: Accepted for publication
DOI: 10.1016/j.apenergy.2011.02.013
URI: https://dspace.lboro.ac.uk/2134/14674
Publisher Link: http://dx.doi.org/10.1016/j.apenergy.2011.02.013
ISSN: 0306-2619
Appears in Collections:Published Articles (Chemical Engineering)

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