Prospecting for Oleaginous and Robust Chlorella spp. for Coal-Fired Flue-Gas-Mediated Biodiesel Production

Bohwa Kim, Ramasamy Praveenkumar, Eunji Choi, Kyubock Lee, Sang Goo Jeon and You-Kwan Oh
Additional contact information
Bohwa Kim: Advanced Biomass R&D Center, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
Ramasamy Praveenkumar: Aquatic Biology Laboratory, and Renewable Materials and Nanotechnology Group, KU Leuven, Campus Kulak, 8500 Kortrijk, Belgium
Eunji Choi: Biomass and Waste Energy Laboratory, Korea Institute of Energy Research (KIER), Daejeon 34129, Korea
Kyubock Lee: Graduate School of Energy Science and Technology, Chungnam National University (CNU), Daejeon 34134, Korea
Sang Goo Jeon: Biomass and Waste Energy Laboratory, Korea Institute of Energy Research (KIER), Daejeon 34129, Korea
You-Kwan Oh: School of Chemical and Biomolecular Engineering, Pusan National University (PNU), Busan 46241, Korea

Energies, 2018, vol. 11, issue 8, 1-13

Abstract: Prospecting for robust and high-productivity strains is a strategically important step in the microalgal biodiesel process. In this study, 30 local strains of Chlorella were evaluated in photobioreactors for biodiesel production using coal-fired flue-gas. Three strains (M082, M134, and KR-1) were sequentially selected based on cell growth, lipid content, and fatty acid composition under autotrophic and mixotrophic conditions. Under autotrophic conditions, M082 and M134 showed comparable lipid contents ( ca. 230 mg FAME [fatty acid methyl esters derived from microalgal lipids]/g cell) and productivities ( ca. 40 mg FAME/L·d) versus a reference strain (KR-1) outdoors with actual flue-gas (CO 2 , 13%). Interestingly, under mixotrophic conditions, M082 demonstrated, along with maximal lipid content (397 mg FAME/g cell), good tolerance to high temperature (40 °C). Furthermore, the fatty acid methyl esters met important international standards under all of the tested culture conditions. Thus, it was concluded that M082 can be a feedstock of choice for coal-fired, flue-gas-mediated biodiesel production.

Keywords: Chlorella; coal-fired flue-gas; screening; biodiesel property; mixotrophic cultivation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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