Enhancement of Chlorella vulgaris harvesting via the electro-coagulation-flotation (ECF) method

Y. K. Wong, Y. H. Ho, H. M. Leung, K. C. Ho, Y. H. Yau, Kin Lam YUNG*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

11 Citations (Scopus)


This article explores the potential of using an electro-coagulation-flotation (ECF) harvester to allow flotation of microalgae cells for surface harvesting. A response surface methodology (RSM) model was used to optimize ECF harvesting by adjusting electrode plate material, electrode plate number, charge of the electrodes, electrolyte concentration, and pH value of the culture solution. The result revealed that three aluminum electrode plates (one anode and two cathodes), brine solution (8 g/L), and acidity (pH = 4) of culture solution (optimized ECF harvester) The highest flocculant concentration was measured at 2966 mg/L after 60 min and showed a 79.8 % increase of flocculation concentration. Such results can provide a basis for designing a large-scale microalgae harvester for commercial use in the future.

Original languageEnglish
Pages (from-to)9102-9110
Number of pages9
JournalEnvironmental Science and Pollution Research
Issue number10
Early online date30 Dec 2016
Publication statusPublished - Apr 2017

Scopus Subject Areas

  • Environmental Chemistry
  • Pollution
  • Health, Toxicology and Mutagenesis

User-Defined Keywords

  • Chlorella vulgaris
  • Electro-coagulation-flotation
  • Harvesting
  • Optimization


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