Cultivation of microalgae species in wastewater for nutrient removal and biomass production

Title
Cultivation of microalgae species in wastewater for nutrient removal and biomass production
Authors
지민규윤현식최재영전병훈
Keywords
미세조류; 도시하수; 폐수처리; 바이오디젤
Issue Date
2014-05
Publisher
2014 한국신재생에너지학회 춘계학술대회
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 (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.
URI
http://pubs.kist.re.kr/handle/201004/48213
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KIST Publication > Conference Paper
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