Table of Contents
What does filtering a solution do?
filtration, the process in which solid particles in a liquid or gaseous fluid are removed by the use of a filter medium that permits the fluid to pass through but retains the solid particles. Either the clarified fluid or the solid particles removed from the fluid may be the desired product.
What can affect filtration?
Here is a list of all Factors Affecting Filtration Rates and Cake Moistures in plants or laboratory de-watering systems and processes.
- Particle Size of Solids.
- Ratio of slimes to coarser particles.
- Filter aids.
- Feed solids concentration.
- Filter Thickening.
- Slurry pH.
- Flocculation/Dispersion of fine solids.
- Slurry Age.
What is the reason for filtering the mixture?
Filtration is used to separate an insoluble solid from a liquid. It is useful for separating sand from a mixture of sand and water, or excess reactant from a reaction mixture.
Why is filtration useful?
Filtration is extremely important to keep things like water, chemicals, and pharmaceuticals clean, pure and free of contaminants. If it wasn’t for filtration, we might not have safe drinking water, because it plays a crucial role in eliminating sediment, sand, gravel, carbon and other suspended particles.
What happens when solute particles are added to a solution?
(a) When a solid is added to a solvent in which it is soluble, solute particles leave the surface of the solid and become solvated by the solvent, initially forming an unsaturated solution. (b) When the maximum possible amount of solute has dissolved, the solution becomes saturated.
What happens when the maximum amount of solute is dissolved?
(b) When the maximum possible amount of solute has dissolved, the solution becomes saturated. If excess solute is present, the rate at which solute particles leave the surface of the solid equals the rate at which they return to the surface of the solid.
How does concentration affect the solubility of a solution?
As the solution becomes more concentrated, the rate of precipitation will increase and the rate of dissolution will decrease, so that eventually the concentration will stop changing, and this is equilibrium. When equilibrium is reached, the solution is saturated, and that concentration defines the solubility of the solute.
How do you know if a solution is saturated or unsaturated?
If a solution contains less than the maximum amount of solute, it is unsaturated. When a solution is saturated and excess solute is present, the rate of dissolution is exactly equal to the rate of crystallization (Figure 13.2.1b ).