BioChem - DOS

Effect of CO2 supply conditions on lipid production of Chlorella vulgaris from enzymatic hydrolysates of lipid-extracted microalgal biomass residues

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

Zheng, H.; Gao, Z.; Yin, F.; Ji, X.; Huang, H.

The hydrolysates from lipid-extracted microalgal biomass residues (LMBRs) were used as a source of nutrients for the cultivation of Chlorella vulgaris for lipid production under various CO<SUB>2</SUB> supply conditions, including different CO<SUB>2</SUB> concentrations and aeration rates. Both parameters had a significant effect on lipid production. A CO<SUB>2</SUB> concentration of 5% was found to be most suitable for microalgal growth. Microalga grew best at a CO<SUB>2</SUB> aeration rate of 0.5vvm. At this rate, biomass concentration and lipid productivity were at a maximum of 3.83gL<SUP>-1</SUP> and 157mg L<SUP>-1</SUP>d<SUP>-1</SUP>, respectively, but decreased at lower or higher aeration rates. The present results showed that LMBRs utilization was effective in microalgal lipid production under suitable CO<SUB>2</SUB> supply conditions.

2012

Elsevier Applied Science

0960-8524

126

pp.24-30

10.1016/j.biortech.2012.09.048

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART65042819

Microalga; Biodiesel; CO2 supply conditions; Lipid-extracted microalgal biomass residues