THE HARVESTING OF HIGH LIPID CONTENT MICROALGAE BIOMASS THROUGH A FLOCCULATION STRATEGY

Authors

  • J. S. Lemos Universidade Federal do Paraná
  • J. V. C. Vargas Universidade Federal do Paraná
  • A. B. Mariano Universidade Federal do Paraná
  • V. M. Kava Universidade Federal do Paraná
  • J. O. Klein Jr Universidade Federal do Paraná
  • J. C. Ordonez Florida State University

DOI:

https://doi.org/10.5380/reterm.v17i2.64130

Keywords:

biodiesel, microalgae, flocculation, lipids, Acutodesmus obliquus

Abstract

Different flocculants were evaluated for the flocculation of microalgae biomass of Acutodesmus obliquus. Flocculation was tested with FeCl3 and NaOH at different concentrations and compared to a sample centrifuged at 7000 rpm. The evaluated parameters were absorbance (540 nm) in the clarified medium, and lipids concentration. For FeCl3 (0.2 mmol L-1) as flocculant, efficiency was 96.8%, and with NaOH (8 mmol L-1) 93.5%. Centrifugation efficiency was lower than with either flocculants: 91.7%. However, NaOH flocculation reduced lipid content, which did not occur with FeCl3. Flocculation efficiency was affected by salt concentration, reducing efficiency by 79% due to increased nutrient concentration (9 mL L-1).

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Published

2018-12-28

How to Cite

Lemos, J. S., Vargas, J. V. C., Mariano, A. B., Kava, V. M., Klein Jr, J. O., & Ordonez, J. C. (2018). THE HARVESTING OF HIGH LIPID CONTENT MICROALGAE BIOMASS THROUGH A FLOCCULATION STRATEGY. Revista De Engenharia Térmica, 17(2), 41–47. https://doi.org/10.5380/reterm.v17i2.64130

Issue

Vol. 17 No. 2 (2018)

Section

Tecnologia/Technology

License

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