Abstract
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% CO2. C. vulgaris, S. obliquus and O. multisporus showed optimal specific growth rates (μopt) of 1.37, 1.14 and 1.00 day-1, respectively, and almost complete removal (>99%) of nitrogen and phosphorus within 4 days. The highest specific lipid productivity was 0.164g-lipidsg-cell-1 day-1 and oleic acid was increased to 44% in C. vulgaris after 7 days of cultivation in the presence of CO2. It was concluded that C. vulgaris is a good potential source for the production of biodiesel coupled with nutrient removal from wastewater.
Original language | English (US) |
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Pages (from-to) | 142-148 |
Number of pages | 7 |
Journal | Ecological Engineering |
Volume | 58 |
DOIs | |
State | Published - Sep 2013 |
Bibliographical note
Funding Information:This work was supported by the Senior Researchers program (the National Research Foundation of Korea , 2010-0026904 ), the Eco-Innovation project (Global-Top project) of the Korea Ministry of Environment, and the Brain Korea-21 (BK-21) program of the Korea Ministry of Education, Science & Technology (MEST).
Keywords
- Biodiesel
- Biomass yield
- CO
- Chlorella vulgaris
- Domestic wastewater
- Nutrient uptake