title: Comparison of nutrient removal capacity and biomass settleability of four high-potential microalgal species.
abstract: Four common used microalgae species were compared in terms of settleability, nutrient removal capacity and biomass productivity. After 1 month training, except cyanobacteria Phormidium sp., three green microalgae species, Chlamydomonas reinhardtii, Chlorella vulgaris and Scenedesmus rubescens, showed good settleability. The N and P removal efficiency was all above 99% within 7, 4, 6 and 6 days for N and 4, 2, 3 and 4 days for P, resulting in the N removal rates of 3.66±0.17, 6.39±0.20, 4.39±0.06 and 4.31±0.18 mg N/l/d and P removal rates of 0.56±0.07, 0.89±0.05, 0.76±0.09 and 0.60±0.05 mg P/l/d for Phormidium sp., C. reinhardtii, C. vulgaris and S. rubescens, respectively. Phormidium sp. had the lowest algal biomass productivity (2.71±0.7 g/m(2)/d) and the other three green microalgae showed higher algal biomass productivity (around 6 g/m(2)/d). Assimilation into biomass was the main removal mechanism for N and P.
authors.affiliation: Faculty of Sustainability, Institute of Ecology, Leuphana University of Lueneburg, Lueneburg 21335, Germany. Yanyan.Su@stud.leuphana.de
authors.forename: Yanyan
authors.initials: Y
authors.lastname: Su
authors.forename: Artur
authors.initials: A
authors.lastname: Mennerich
authors.forename: Brigitte
authors.initials: B
authors.lastname: Urban
mesh_terms: D018533:Biomass; D052918:Environmental Restoration and Remediation / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D058086:Microalgae / Q000145:classification / Q000378:metabolism*; D009584:Nitrogen / Q000378:metabolism; D010100:Oxygen / Q000378:metabolism; D010758:Phosphorus / Q000378:metabolism; D013045:Species Specificity
chemical_list: D010758:Phosphorus; D009584:Nitrogen; D010100:Oxygen