title: Microalgae cultivation using an aquaculture wastewater as growth medium for biomass and biofuel production.
abstract: Microalgae as a main feedstock has attracted much attention in recent years but is still not economically feasible due to high algal culture cost. The objective of this study was to develop a comprehensive eco-friendly technology for cultivating microalgae Platymonas subcordiformis using aquaculture wastewater as growth medium for biomass and biofuel production. Platymonas subcordiformis was grown in pretreated flounder aquaculture wastewaters taken from different stages. Each of wastewater contained different levels of nutrients. The biomass yield of microalgae and associated nitrogen and phosphorous removal were investigated. The results showed that algal cell density increased 8.9 times than the initial level. Platymonas subcordiformis removed nitrogen and phosphorus from wastewater with an average removal efficiency of 87%-95% for nitrogen and 98%-99% for phosphorus. It was feasible to couple the removal of nitrogen and phosphorus from wastewater to algal biomass and biofuel production. However, further studies are required to make this technologies economically viable for algae biofuel production.
authors: College of Environmental and Chemical Engineering, Dalian jiaotong University, Dalian 116028, China.  guozhen1974@gmail.com
authors: Zhen
authors: Z
authors: Guo
authors: College of Marine Environmental Engineering, Dalian Fisheries University, Dalian 116023, China.
authors: Yuan
authors: Y
authors: Liu
authors: College of Environmental and Chemical Engineering, Dalian jiaotong University, Dalian 116028, China.
authors: Haiyan
authors: H
authors: Guo
authors: College of Environmental and Chemical Engineering, Dalian jiaotong University, Dalian 116028, China.
authors: Song
authors: S
authors: Yan
authors: College of Environmental and Chemical Engineering, Dalian jiaotong University, Dalian 116028, China.
authors: Jun
authors: J
authors: Mu
mesh_terms: D000818:Animals; D017756:Aquaculture; D056804:Biofuels / Q000382:microbiology; D018533:Biomass; D001709:Biotechnology / Q000379:methods; D003470:Culture Media; D005398:Fisheries; D005432:Flounder; D058086:Microalgae / Q000254:growth & development; D009584:Nitrogen / Q000032:analysis / Q000302:isolation & purification; D010710:Phosphates / Q000302:isolation & purification; D010758:Phosphorus / Q000032:analysis; D062065:Wastewater / Q000382:microbiology
chemical_list: D056804:Biofuels; D003470:Culture Media; D009584:Nitrogen; D010710:Phosphates; D010758:Phosphorus; D062065:Wastewater
keywords: biomass; microalgae; nitrogen and phosphorus removal; wastewater treatment