Cultivation of microalgae species in tertiary municipal wastewater supplemented with CO sub(2) for nutrient removal and biomass production

This study demonstrates the potential for algae-based biofuel production by coupling advanced wastewater treatment with microalgae cultivation for low-cost lipid production. Three species (Chlorella vulgaris, Scenedesmus obliquus and Ourococcus multisporus) with higher biomass yield were selected an...

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Bibliographic Details
Published in:Ecological engineering 2013-09, Vol.58, p.142-148
Main Authors: Ji, M-K, Abou-Shanab, RAI, Kim, S-H, Salama, E-S, Lee, S-H, Kabra, AN, Lee, Y-S, Hong, S, Jeon, B-H
Format: Article
Language:English
Subjects:
Biodiesel
Biomass
Carbon dioxide
Chlorella vulgaris
Cultivation
Lipids
Nutrients
Optimization
Ourococcus
Scenedesmus obliquus
Waste water
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Summary:This study demonstrates the potential for algae-based biofuel production by coupling advanced wastewater treatment with microalgae cultivation for low-cost lipid production. Three species (Chlorella vulgaris, Scenedesmus obliquus and Ourococcus multisporus) with higher biomass yield were selected and cultured in wastewater amended with 15% CO sub(2). C. vulgaris, S. obliquus and O. multisporus showed optimal specific growth rates ( mu sub(opt)) of 1.37, 1.14 and 1.00 day super(-1), respectively, and almost complete removal (>99%) of nitrogen and phosphorus within 4 days. The highest specific lipid productivity was 0.164g-lipidsg-cell super(-1) day super(-1) and oleic acid was increased to 44% in C. vulgaris after 7 days of cultivation in the presence of CO sub(2). It was concluded that C. vulgaris is a good potential source for the production of biodiesel coupled with nutrient removal from wastewater.
ISSN:0925-8574