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 language | English |
|---|---|
| Title of host publication | Algae: Nutrition, Pollution Control and Energy Sources |
| Publisher | Nova Science Publishers |
| Pages | 255-264 |
| Number of pages | 10 |
| ISBN (Print) | 9781606920084 |
| Publication status | Published - Jul 2009 |
| Externally published | Yes |
Keywords
- Algae-laden water
- Charge effect
- Chemical coagulation
- Colloidal titration
- Electrocoagulation/flotation.
ASJC Scopus subject areas
- Nursing(all)