Abstract
This paper presents a study on the removal of natural organic matter (NOM) from paper mill mechanically treated water by integrating electrocoagulation (EC) with chemical coagulation (CC). The EC cell was made from monopolar aluminum plates and samples were pipetted, filtered or floated after CC and EC. It was found that the combination method was efficient in removing NOM even with small electric charges per litre. Colour and permanganate removals of 91 and 88%, respectively, were achieved by the combination of coagulation methods and dissolved air flotation treatment. Permanganate removal in the combination treatment exceeded pure CC. Residual aluminum levels were below 0.05 mg/L in filtered samples. EC also raised the pH and lowered the conductivities of the samples. The best current efficiency for removal ofNOMfrom water was achieved with the smallest current density and the highest removal rate with the highest current density.
| Original language | English |
|---|---|
| Pages (from-to) | 233-239 |
| Number of pages | 7 |
| Journal | Journal of Pulp and Paper Science |
| Volume | 33 |
| Issue number | 4 |
| Publication status | Published - Oct 2007 |
| Externally published | Yes |
Keywords
- Coagulation
- Electricity
- Water reclamation
- Water treatment
ASJC Scopus subject areas
- General Chemistry
- General Chemical Engineering
- General Materials Science
- Media Technology
