NDLI: Carbon dioxide utilisation of Dunaliella tertiolecta for carbon bio-mitigation in a semicontinuous photobioreactor

Content Provider	Springer Nature Link
Author	Farrelly, Damien J. Brennan, Liam Everard, Colm D. McDonnell, Kevin P.
Copyright Year	2013
Abstract	Bio-fixation of carbon dioxide (CO2) by microalgae has been recognised as an attractive approach to offset anthropogenic emissions. Biological carbon mitigation is the process whereby autotrophic organisms, such as microalgae, convert CO2 into organic carbon and O2 through photosynthesis; this process through respiration produces biomass. In this study Dunaliella tertiolecta was cultivated in a semicontinuous culture to investigate the carbon mitigation rate of the system. The algae were produced in 1.2-L Roux bottles with a working volume of 1 L while semicontinuous production commenced on day 4 of cultivation when the carbon mitigation rate was found to be at a maximum for D. tertiolecta. The reduction in CO2 between input and output gases was monitored to predict carbon fixation rates while biomass production and microalgal carbon content are used to calculate the actual carbon mitigation potential of D. tertiolecta. A renewal rate of 45 % of flask volume was utilised to maintain the culture in exponential growth with an average daily productivity of 0.07 g L−1 day−1. The results showed that 0.74 g L−1 of biomass could be achieved after 7 days of semicontinuous production while a total carbon mitigation of 0.37 g L−1 was achieved. This represented an increase of 0.18 g L−1 in carbon mitigation rate compared to batch production of D. tertiolecta over the same cultivation period.
Starting Page	3157
Ending Page	3164
Page Count	8
File Format	PDF
ISSN	01757598
Journal	Applied Microbiology and Biotechnology
Volume Number	98
Issue Number	7
e-ISSN	14320614
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-10-27
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Carbon Mitigation CO2 Dunaliella tertiolecta Microalgae Semicontinuous Microbiology Microbial Genetics and Genomics Biotechnology
Content Type	Text
Resource Type	Article
Subject	Medicine Applied Microbiology and Biotechnology Biotechnology

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