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KMID : 1094720170220010136
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Biotechnology and Bioprocess Engineering
2017 Volume.22 No. 1 p.136 ~ p.141
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Enhancement of biodiesel production in Chlorella vulgaris cultivation using silica nanoparticles
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Jeon Hong-Seop
Park So-Eun
Ahn Bo-Hye
Kim Young-Kee
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Abstract
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Silica nanoparticles were synthesized and used to enhance the gas-liquid mass transfer rate in a CO2/water system. Using silica (SiO2) and methyl-functionalized silica (SiO2-CH3) nanoparticles, the volumetric mass transfer coefficient (kLa) increased by 31 and 145%, respectively. SiO2 and SiO2-CH3 nanoparticles were applied in Chlorella vulgaris culture to enhance the growth of microalgae for lipid production. The highest dry cell weight of C. vulgaris (1.49 g/L) was obtained by addition of SiO2-CH3 nanoparticles, compared to the control (0.48 g/L). Also, maximum productivity (1.005 g/L/day) of fatty acid methyl ester (FAME) in C. vulgaris culture was obtained by introducing SiO2-CH3 nanoparticles. Dry cell weight and FAME productivity increased 210 and 610%, respectively, with the addition of 0.2 wt% SiO2-CH3 nanoparticles.
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KEYWORD
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microalga, Chlorella vulgaris, silica nanoparticles, carbon dioxide fixation, FAME
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