Cultivation of microalgae species in wastewater for nutrient removal and biomass production
- Cultivation of microalgae species in wastewater for nutrient removal and biomass production
- 지민규; 윤현식; 최재영; 전병훈
- 미세조류; 도시하수; 폐수처리; 바이오디젤
- Issue Date
- 2014 한국신재생에너지학회 춘계학술대회
- 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 (C. vulgaris, S. obliquus and
O. 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 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
0.164 g-lipids g-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.
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