title: A comparative study on flocculating ability and growth potential of two microalgae in simulated secondary effluent.
abstract: The flocculating ability was an important property to microalgal harvesting, especially in secondary effluent. In this study, the flocculating ability of two microalgae, Chlorococcum sp. GD and Parachlorella kessleri TY, was evaluated after 10d of cultivation in secondary effluent. After 180min of settling, the flocculating ability of Chlorococcum sp. GD and P. kessleri TY was 84.43% and 16.23%, respectively. It was suggested that Chlorococcum sp. GD was an excellent self-flocculating microalgae. The mechanism on self-flocculating of Chlorococcum sp. GD was probably related to hydrophobic extracellular polymeric substances (EPS). Besides, compared to P. kessleri TY, the nitrogen and phosphorus removal efficiency of Chlorococcum sp. GD was high, which was up to 66.51% and 74.19%, respectively. Chlorococcum sp. GD also had high lipid content and biomass concentration. Therefore, Chlorococcum sp. GD could be regarded as a promising candidate for microalgal cultivation and harvesting in secondary effluent.
authors.affiliation: School of Life Science, Shanxi University, Taiyuan 030006, China.
authors.forename: Junping
authors.initials: J
authors.lastname: Lv
authors.affiliation: School of Life Science, Shanxi University, Taiyuan 030006, China.
authors.forename: Junyan
authors.initials: J
authors.lastname: Guo
authors.affiliation: School of Life Science, Shanxi University, Taiyuan 030006, China.
authors.forename: Jia
authors.initials: J
authors.lastname: Feng
authors.affiliation: School of Life Science, Shanxi University, Taiyuan 030006, China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Liu
authors.affiliation: School of Life Science, Shanxi University, Taiyuan 030006, China. Electronic address: xiesl@sxu.edu.cn.
authors.forename: Shulian
authors.initials: S
authors.lastname: Xie
mesh_terms: D018533:Biomass; D000460:Chlorophyta / Q000254:growth & development* / Q000378:metabolism; D005427:Flocculation; D058086:Microalgae / Q000254:growth & development* / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism; D010758:Phosphorus / Q000378:metabolism
chemical_list: D010758:Phosphorus; D009584:Nitrogen
keywords: Biomass and lipid accumulation; Flocculating ability; Microalgae; Pollutants removal; Secondary effluent