Problem C2 Theory
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Sedimentation is the process where a dilute slurry settles by gravity into a clear fluid and one of higher solids concentration, separating suspended solid particles from liquid. The Kynch method is a graphical approach used to find a slurry's settling velocity over time, assuming uniform particle size and shape and neglecting wall effects. Key factors affecting sedimentation rate include initial suspension height and concentration, with different settling regions defined by constant, transitioning, and hindered settling velocities.
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Problem C2 Theory
- 1. Problem C2Batch SedimentationSibug, Anna Kristina L.Tan, Maria Kimberly L.Villanueva, Von Kirby
- 2. 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.
- 4. Principles/TheoriesFigure 1. Behaviour of batch curve during batch sedimentation process
- 5. Kynch Method graphical approach that is used to find the settling velocity of a slurry or suspension over time Restrictionsneglecting wall effects assuming uniform particle size and shapethe particle reaches zero at large timesthe system must obey Stokes’ Law
- 6. Principles/TheoriesIn the constant settling region,Free settling: settling velocity (ut) is constantIn the transition region,Hindered settling regionFactors affecting the rate of sedimentationInitial height of the suspensionInitial concentration of the suspensionWhere:Ho= initial height of interfaceHc= critical heighttc= time in obtaining the critical height