Removing algae with electro-coagulation/flotation

Jia-Qian Jiang*, Y. L. Xu, O. N. Mwabonje, M. Chipps

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Citation (Scopus)

Abstract

This study demonstrates that by operating at a low current density, 2.5 A/m2, electrocoagulation/flotation (ECF) performed superior to the chemical coagulation (CC) for the removal of algae. For the similar metal ion doses compared, the ECF can remove 11-12% more Chlorophyll-a than CC method. A colloidal titration study shows that the charge of flocs generated by the ECF was more positive than that by CC over the full doses studied and then the charge effect contributes to the superior performance of the ECF. In addition to this, a direct reduction of algal numbers on the surface of anodes is speculated and the flotation of aggregated flocs by hydrogen bubbles, resulting from the ECF process, should contribute to the overall algal removal.

Original languageEnglish
Title of host publicationAlgae: Nutrition, Pollution Control and Energy Sources
PublisherNova Science Publishers
Pages255-264
Number of pages10
ISBN (Print)9781606920084
Publication statusPublished - Jul 2009
Externally publishedYes

Keywords

  • Algae-laden water
  • Charge effect
  • Chemical coagulation
  • Colloidal titration
  • Electrocoagulation/flotation.

ASJC Scopus subject areas

  • Nursing(all)

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