Comparison of nutrient removal capacity and biomass settleability of four high-potential microalgal species.

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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/m2/d) and the other three green microalgae showed higher algal biomass productivity (around 6 g/m2/d). Assimilation into biomass was the main removal mechanism for N and P.
Original languageEnglish
JournalBioresource Technology
Pages (from-to)157-162
Number of pages6
Publication statusPublished - 11.2012

    Research areas

  • Sustainability Science - Algal biomass settleability, Biomass productivity, High-potential, Nutrient removal, Unicellular microalgae species