“sedimentation”的概念、定义、翻译、参考文献-科学参考

sedimentation

Physics

The settling of the solid particles through a liquid either to produce a concentrated slurry from a dilute suspension or to clarify a liquid containing solid particles. Usually this relies on the force of gravity, but if the particles are too small or the difference in density between the solid and liquid phases is too small, a centrifuge may be used. In the simplest case the rate of sedimentation is determined by Stokes’ law, but in practice the predicted rate is rarely reached. Measurement of the rate of sedimentation in an ultracentrifuge can be used to estimate the size of macromolecules.

Chemistry

The settling of the solid particles through a liquid either to produce a concentrated slurry from a dilute suspension or to clarify a liquid containing solid particles. Usually this relies on the force of gravity, but if the particles are too small or the difference in density between the solid and liquid phases is too small, a centrifuge may be used. In the simplest case the rate of sedimentation is determined by Stokes’s law, but in practice the predicted rate is rarely reached. Measurement of the rate of sedimentation in an ultracentrifuge can be used to estimate the size of macromolecules.

Chemical Engineering

A separation process in which particles in suspension settle under the influence of gravity into a clear liquid and a slurry that has a higher solids content. It is commonly used in water treatment. A thickener is a type of continuously operated sedimentation device in which concentrated slurry is produced and the clear liquid overflows. A clarifier is another type of sedimentation device that is used to produce a more concentrated solid–liquid mixture. See thickening. The use of flocculating agents can assist with the settling process by causing the particles to form flocs or aggregates that have a larger size and enabling them to settle more quickly. For mixtures in which the particles do not influence one another, the rate of settling can be determined using Stokes’s law, which is dependent on the size of particle and relative density to the particular to the fluid. Where the difference in density is small, centrifugal force will hasten the separation process.

单词	sedimentation
释义	sedimentation Physics The settling of the solid particles through a liquid either to produce a concentrated slurry from a dilute suspension or to clarify a liquid containing solid particles. Usually this relies on the force of gravity, but if the particles are too small or the difference in density between the solid and liquid phases is too small, a centrifuge may be used. In the simplest case the rate of sedimentation is determined by Stokes’ law, but in practice the predicted rate is rarely reached. Measurement of the rate of sedimentation in an ultracentrifuge can be used to estimate the size of macromolecules. Chemistry The settling of the solid particles through a liquid either to produce a concentrated slurry from a dilute suspension or to clarify a liquid containing solid particles. Usually this relies on the force of gravity, but if the particles are too small or the difference in density between the solid and liquid phases is too small, a centrifuge may be used. In the simplest case the rate of sedimentation is determined by Stokes’s law, but in practice the predicted rate is rarely reached. Measurement of the rate of sedimentation in an ultracentrifuge can be used to estimate the size of macromolecules. Chemical Engineering A separation process in which particles in suspension settle under the influence of gravity into a clear liquid and a slurry that has a higher solids content. It is commonly used in water treatment. A thickener is a type of continuously operated sedimentation device in which concentrated slurry is produced and the clear liquid overflows. A clarifier is another type of sedimentation device that is used to produce a more concentrated solid–liquid mixture. See thickening. The use of flocculating agents can assist with the settling process by causing the particles to form flocs or aggregates that have a larger size and enabling them to settle more quickly. For mixtures in which the particles do not influence one another, the rate of settling can be determined using Stokes’s law, which is dependent on the size of particle and relative density to the particular to the fluid. Where the difference in density is small, centrifugal force will hasten the separation process.
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