Influence of CO2 and light spectra on the enhancement of microalgal growth and lipid content

Authors
Kumar, Muthukannan SatheeshHwang, Jae-HoonAbou-Shanab, Reda A. I.Kabra, Akhil N.Ji, Min-KyuJeon, Byong-Hun
Issue Date
2014-11
Publisher
AMER INST PHYSICS
Citation
JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY, v.6, no.6
Abstract
The effect of different light spectrum and CO2 concentrations on the growth and lipid content of Micractinium pusillum and Ourococcus multisporus was investigated. The highest biomass yields (2.9 and 2.6 g-dry cell weight l(-1)) were observed for M. pusillum and O. multisporus, respectively, at 5% CO2 with red light illumination. Red light spectrum with 5% CO2 supported the highest lipid contents (20% and 27%) and lipid productivity (32 and 36 mg l(-1) d(-1)) for M. pusillum and O. multisporus, respectively. The highest fatty acid methyl esters content for both microalgal species was observed under red light spectrum and 5% CO2 conditions, with the oleic acid fraction ranging between 35% and 37%. This study showed that the red light spectrum and 5% CO2 were the optimum conditions for maximum growth, lipid content and lipid productivity of both microalgae species, which could be further exploited to establish a microalga-based biodiesel production strategy. (C) 2014 AIP Publishing LLC.
Keywords
FRESH-WATER MICROALGAE; FATTY-ACID-COMPOSITION; MUNICIPAL WASTE-WATER; CHLORELLA SP; BIODIESEL; ACCUMULATION; CULTIVATION; REDUCTION; CULTURE; BIOMASS; FRESH-WATER MICROALGAE; FATTY-ACID-COMPOSITION; MUNICIPAL WASTE-WATER; CHLORELLA SP; BIODIESEL; ACCUMULATION; CULTIVATION; REDUCTION; CULTURE; BIOMASS; Microalgae; LED; CO2; lipid; FAME
ISSN
1941-7012
URI
https://pubs.kist.re.kr/handle/201004/126218
DOI
10.1063/1.4901541
Appears in Collections:
KIST Article > 2014
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