Potential of water surface-floating microalgae for biodiesel production: Floating-biomass and lipid productivities

Masaki Muto, Daisuke Nojima, Liang Yue, Hideyuki Kanehara, Hideaki Naruse, Asuka Ujiro, Tomoko Yoshino, Tadashi Matsunaga, Tsuyoshi Tanaka*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Microalgae have been accepted as a promising feedstock for biodiesel production owing to their capability of converting solar energy into lipids through photosynthesis. However, the high capital and operating costs, and high energy consumption, are hampering commercialization of microalgal biodiesel. In this study, the surface-floating microalga, strain AVFF007 (tentatively identified as Botryosphaerella sudetica), which naturally forms a biofilm on surfaces, was characterized for use in biodiesel production. The biofilm could be conveniently harvested from the surface of the water by adsorbing onto a polyethylene film. The lipid productivity of strain AVFF007 was 46.3 mg/L/day, allowing direct comparison to lipid productivities of other microalgal species. The moisture content of the surface-floating biomass was 86.0 ± 1.2%, which was much lower than that of the biomass harvested using centrifugation. These results reveal the potential of this surface-floating microalgal species as a biodiesel producer, employing a novel biomass harvesting and dewatering strategy.

Original languageEnglish
Pages (from-to)314-318
Number of pages5
JournalJournal of Bioscience and Bioengineering
Issue number3
Publication statusPublished - 2017 Mar 1
Externally publishedYes


  • Biodiesel
  • Dewatering
  • Floating
  • Harvesting
  • Microalgae

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology


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