Cultivation of a New Microalga, Micractinium reisseri, in Municipal Wastewater for Nutrient Removal, Biomass, Lipid, and Fatty Acid Production

Title
Cultivation of a New Microalga, Micractinium reisseri, in Municipal Wastewater for Nutrient Removal, Biomass, Lipid, and Fatty Acid Production
Authors
Reda A. I. Abou-ShanabMarwa M. El-DalatonyMostafa M. EL-Sheekh지민규El-Sayed SalamaAkhil N. Kabra전병훈
Keywords
Microalgae; Municipal wastewater; Nutrient removal; Lipid; Fatty acid
Issue Date
2014-06
Publisher
Biotechnology and bioprocess engineering
Citation
VOL 19, NO 3, 510-518
Abstract
Coupling of advanced wastewater treatment with microalgae cultivation for low-cost lipid production was demonstrated in this study. The microalgal species Micractinium reisseri and Scenedesmus obliquus were isolated from municipal wastewater mixed with agricultural drainage. M. reisseri was selected based on the growth rate and cultivated in municipal wastewater (influent, secondary and tertiary effluents) which varied in nutrient concentration. M. reisseri showed an optimal specific growth rate (μopt) of 1.15, 1.04, and 1.01 1/day for the influent and the secondary and tertiary effluents, respectively. Secondary effluent supported the highest phosphorus removal (94%) and saturated fatty acid content (40%). The highest lipid content (40%), unsaturated fatty acid content, including monounsaturated and polyunsaturated fatty acids (66%), and nitrogen removal (80%) were observed for tertiary effluent. Fatty acids accumulating in the microalgal biomass (M. reisseri) were mainly composed of palmitic acid, oleic acid, linoleic acid, and a-linolenic acid. Cultivation of M. reisseri using municipal wastewater served a dual function of nutrient removal and biofuel feedstock generation.
URI
http://pubs.kist.re.kr/handle/201004/48206
ISSN
12268372
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KIST Publication > Article
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