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Harvesting of Scenedesmus obliquus cultivated in seawater using electro-flotation

Korean Journal of Chemical Engineering, ISSN: 0256-1115, Vol: 34, Issue: 1, Page: 62-65
2017
  • 19
    Citations
  • 0
    Usage
  • 42
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    19
    • Citation Indexes
      19
  • Captures
    42

Article Description

Seawater, when supplemented to a growth medium, appears to stimulate auto-flocculation of a certain microalgae species like Scenedesmus obliquus and thus renders its harvesting easy. To make use of this unique response for the purpose of biomass harvesting, S. obliquus was grown in a seawater-added medium and then collected in electrochemically- mediated ways. Significantly higher harvesting efficiency and energy saving were observed with electroflotation (EF) than with electro-coagulation-flotation (ECF) and the standard BG11 medium. An optimal EF condition, the highest recovery rate with least energy use, was found with a supply of 0.5 A. Seawater amendment was most beneficial in a level of 10%. All this clearly showed that applying EF to cells cultivated in the seawater-supplemented medium is a promising harvesting means that enables one to obtain algae biomass without interfering with the downstream process of biodiesel production.

Bibliographic Details

Heewon Shin; Kyochan Kim; Yong Keun Chang; Joo Young Jung; Sungchul Charles Bai; Jong In Han

Springer Science and Business Media LLC

Chemistry; Chemical Engineering

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