| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 227217 | Journal of Industrial and Engineering Chemistry | 2015 | 8 Pages |
•The filter outlet turbidity was decreased by increasing the talc dosage from 0 to 67.5 mg/l.•When 67.5 mg/l of talc concentration was added to the suspension both running limits (turbidity and head loss) were not exceeded within the first 300 min of the filter run.•Hydrophobic interaction was the key coagulation mechanism for talc.•For talc to be used as a filter aid, it has to be applied to the suspension as an admix prior to the filtration process rather than a filter precoat.
The potential of using a new filter aid, namely, talc to enhance the removal of particles in a multi-media filter was investigated. In the case of the nano-scale particles the running time was enhanced by 300 min at a talc concentration of 67.5 mg/l. In the case of the micro-scale particles the running time was enhanced from 20 min to 40, 100, and 300 min at a talc concentration of 22.5 mg/l, 45 mg/l, and 67.5 mg/l, respectively. Coagulation was due to hydrophobic and chemical interactions between talc and the different suspensions.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide
