Problem C2Batch Sedimentation Sibug, Anna Kristina L. Tan, Maria Kimberly L. Villanueva, Von Kirby
Sedimentation - is the process wherein a dilute slurry is settled by gravity into a clear fluid and a slurry of higher solids concentration. - the partial separation of concentration of suspended solid particles from a liquid by gravity settling.
Principles/Theories Figure 1. Behaviour of batch curve during batch sedimentation process
Kynch Method graphical approach that is used to find the settling velocity of a slurry or suspension over time Restrictions neglecting wall effects assuming uniform particle size and shape the particle reaches zero at large times the system must obey Stokes’ Law
Principles/Theories In the constant settling region, Free settling: settling velocity (ut) is constant In the transition region, Hindered settling region Factors affecting the rate of sedimentation Initial height of the suspension Initial concentration of the suspension Where: Ho= initial height of interface Hc= critical height tc= time in obtaining the critical height