title: Microalga, Acutodesmus obliquus KGE 30 as a potential candidate for CO2 mitigation and biodiesel production.
abstract: In this study, the effect of flue gas CO2 on growth, lipid production, and fatty acid composition of a green microalga Acutodesmus obliquus KGE 30 was investigated. The highest growth rate (0.46 g L(-1) and μmax = 1.09 day(-1)), total inorganic carbon removal (95.9 mg L(-1)), and lipid productivity (20.1 mg L(-1) day L(-1)) was obtained at 14.1 % CO2 after 4 days of cultivation. In a semicontinuous batch reactor, the highest biomass production (1.19 g L(-1)) was achieved after 12 days with continuous injection of flue gas CO2. Compared with synthetic CO2, fatty acid methyl ester analysis showed that the amount of unsaturated fatty acid increased by 19.2 % with 14.1 % flue gas CO2. The application of flue gas CO2 improved biomass production and lipid productivity in A. obliquus. The current investigation demonstrated that the use of flue gas CO2 could reduce the cost of microalgae biomass production for better biofuel generation.
authors.affiliation: Green City Technology Institute, Korea Institute of Science and Technology, Seoul, 136-791, South Korea.
authors.forename: Hyun-Shik
authors.initials: HS
authors.lastname: Yun
authors.affiliation: Hydro Science and Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology, Goyang-si, 411-712, South Korea.
authors.forename: Min-Kyu
authors.initials: MK
authors.lastname: Ji
authors.affiliation: Green City Technology Institute, Korea Institute of Science and Technology, Seoul, 136-791, South Korea.
authors.forename: Young-Tae
authors.initials: YT
authors.lastname: Park
authors.affiliation: Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 133-791, South Korea.
authors.forename: El-Sayed
authors.initials: el-S
authors.lastname: Salama
authors.affiliation: Green City Technology Institute, Korea Institute of Science and Technology, Seoul, 136-791, South Korea. jchoi@kist.re.kr.
authors.forename: Jaeyoung
authors.initials: J
authors.lastname: Choi
mesh_terms: D056804:Biofuels; D018533:Biomass; D002244:Carbon; D002245:Carbon Dioxide / Q000378:metabolism*; D057965:Carbon Sequestration; D000460:Chlorophyta / Q000502:physiology*; D005227:Fatty Acids; D008055:Lipids; D058086:Microalgae / Q000254:growth & development
chemical_list: D056804:Biofuels; D005227:Fatty Acids; D008055:Lipids; D002245:Carbon Dioxide; D002244:Carbon
keywords: Acutodesmus obliquus KGE 30; Biodiesel; Biomass; CO2; Flue gas; Microalgae