TiO₂ Photocatalyst Nanoparticle Separation: Flocculation in Different Matrices and Use of Powdered Activated Carbon as a Precoat in Low-Cost Fabric Filtration

Figure 4

Total solids concentrations (corrected for TS concentrations of the matrices) in 1 g/L TiO₂ suspensions containing different amounts of Merck PAC or Hydraffin WG PAC in different matrices ((a), (b): deionized water; (c), (d): 0.1 g/L NaCl solution; (e), (f): 0.5 g/L NaCl solution; (g), (h): 1 g/L NaCl solution) subsequent to vacuum filtration over spunbond polypropylene fabrics.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)