Sedimentation kinetics of flocculated suspensions III: Effect of ζ-potential

✍ Scribed by J. ThurøCarstensen; Kenneth P. Stremming; Pakdee Pothisiri

• Publisher: John Wiley and Sons
• Year: 1972
• Tongue: English
• Weight: 191 KB
• Volume: 61
• Category: Article
• ISSN: 0022-3549
• DOI: 10.1002/jps.2600611227

✦ Synopsis

The sedimentation of flocculated suspensions in an intermediate concentration range was previously shown to consist of an initial region of pseudoparabolic nature and of a final region of biexponential character. The rate constant, k, of the initial region is shown here to be a function of both Stokes and aggregational forces, and a method is outlined showing the effect of both. The electrical potential effect on the sedimentation kinetics was studied by varying the (-potential; of the contraction rate constants, W , and w?, in the final region, the larger (ol) is fairly independent of the <-potential whereas the reciprocal of w2 is linearly related to the reciprocal of the (-potential.

Keyphrases 0 Zeta-potentialbeffect on sedimentation kinetics of flocculated suspensions G Flocculated suspensions, sedimentation kinetics-effect of r-potential 0 Sedimentation kinetics --flocculated suspensions, effect of (-potential second phase is measured from this point on, i.e.,