In chemistry, the retention of particles in suspension is referred as sedimentation. It is due to the movement of fluid particles in response to the various forced over them. Sedimentation is also referred as clarification. Various forces are listed below.
The suspended particles can be clay or silt deposition originated in water. The floc or sedimented material can be treated with the help of coagulating agent like lime softening. When the velocity of water is decreased below the particles velocity limit, then particles can never remain suspended in solution anymore. If the velocity does not support the process of sedimentation then the particles are transported by gravitational force.
In geology, sedimentation is means of erosion opposite. Deposition of sediment results in the formation of sedimentary rocks. Sedimentation terminates the transport of fluid particles by means of true bed load transport or by saltation. Sedimentation refers to end of settling process however settling is the process of suspended solids falling through the liquid particles. Sedimentation includes separation of particles ranging in various sizes from dust pollen, single molecules such as proteins and peptides to large rocks which are suspended in water. Small molecules like aspirin can be sedimented in a significant way. In biology, sedimentation helps in separation of cells from cultured media.
Factors that affect Sedimentation: