title: Effect of mine wastewater on nutrient removal and lipid production by a green microalga Micratinium reisseri from concentrated municipal wastewater.
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 (0.8gL(-1)) and nutrient uptake (35.9mgTNL(-1) and 5.4mgTPL(-1)) at 3% MWF ([Fe]tot=6.7mgL(-1)), and the highest lipid productivity (10.4mgL(-1)day(-1)) at 5% MWF ([Fe]tot=11.2mgL(-1)) after 15days. 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.
authors.affiliation: Department of Environmental Engineering, Yonsei University, Wonju 220-710, South Korea.
authors.forename: Min-Kyu
authors.initials: MK
authors.lastname: Ji
authors.affiliation: Department of Environmental Engineering, Yonsei University, Wonju 220-710, South Korea.
authors.forename: Akhil N
authors.initials: AN
authors.lastname: Kabra
authors.affiliation: Department of Environmental Engineering, Yonsei University, Wonju 220-710, South Korea.
authors.forename: El-Sayed
authors.initials: el-S
authors.lastname: Salama
authors.affiliation: Department of Environmental Engineering, Yonsei University, Wonju 220-710, South Korea.
authors.forename: Hyun-Seog
authors.initials: HS
authors.lastname: Roh
authors.affiliation: School of Chemical and Biomolecular Engineering, Pusan National University, Busan 609-735, South Korea.
authors.forename: Jung Rae
authors.initials: JR
authors.lastname: Kim
authors.affiliation: Department of Energy and Mineral Resources Engineering, Dong-A University, Busan 604-714, South Korea.
authors.forename: Dae Sung
authors.initials: DS
authors.lastname: Lee
authors.affiliation: Department of Environmental Engineering, Yonsei University, Wonju 220-710, South Korea. Electronic address: bhjeon@yonsei.ac.kr.
authors.forename: Byong-Hun
authors.initials: BH
authors.lastname: Jeon
mesh_terms: D001673:Biodegradation, Environmental; D018533:Biomass; D002244:Carbon / Q000032:analysis; D000460:Chlorophyta / Q000254:growth & development / Q000378:metabolism*; D002947:Cities; D004952:Esters / Q000378:metabolism; D005227:Fatty Acids / Q000378:metabolism; D008055:Lipids / Q000096:biosynthesis*; D058086:Microalgae / Q000378:metabolism*; D008906:Mining; D009584:Nitrogen / Q000302:isolation & purification*; D010758:Phosphorus / Q000302:isolation & purification*; D013997:Time Factors; D062065:Wastewater / Q000382:microbiology*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification
chemical_list: D002244:Carbon; D004952:Esters; D005227:Fatty Acids; D008055:Lipids; D009584:Nitrogen; D010758:Phosphorus; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Lipid productivity; Micratinium reisseri; Mine wastewater; Municipal wastewater; Nutrient removal