Effect of mine wastewater on nutrient removal and lipid production by microalgae from concentrated municipal wastewater
- Effect of mine wastewater on nutrient removal and lipid production by microalgae from concentrated municipal wastewater
- 지민규; 윤현식; 최재영; 전병훈
- 광산배수; 폐수처리; 하폐수 탈리액; 바이오디젤
- Issue Date
- 2014 한국신재생에너지학회 춘계학술대회
- 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.
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