Effect of mine wastewater on nutrient removal and lipid production by microalgae from concentrated municipal wastewater

Title
Effect of mine wastewater on nutrient removal and lipid production by microalgae from concentrated municipal wastewater
Authors
지민규윤현식최재영전병훈
Keywords
광산배수; 폐수처리; 하폐수 탈리액; 바이오디젤
Issue Date
2014-05
Publisher
2014 한국신재생에너지학회 춘계학술대회
Abstract
Effect of mine wastewater on the nutrient removal efficiency of a green microalga Micratinium reisseri from concentrated municipal wastewater (CMW) with simultaneous lipid production was investigated. Different dilution ratios (1–10%) of CMW either with mine wastewater (MWF) or mine wastewater without Fe (MWOF) were used. M. reisseri showed the highest growth (0.8 g L-1) and nutrient uptake (35.9 mg TN L-1 and 5.4 mg TP L-1) at 3% MWF ([Fe]tot= 6.7 mg L-1), and the highest lipid productivity (10.4 mg L L-1 day L-1) at 5% MWF ([Fe]tot= 11.2 mg L-1) after 15 days. CMW supported the algal autoflocculation due to formation of phosphate, calcium and magnesium precipitates at a high suspension pH. Fatty acid methyl ester analysis revealed that the microalgal lipids possessed 79–82% of C16/C18 fatty acids. Application of mine wastewater improved the nutrient removal efficiency, growth and lipid productivity of M. reisseri cultivated in CMW.
URI
http://pubs.kist.re.kr/handle/201004/48214
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KIST Publication > Conference Paper
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