Solid liquid separation methods

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1. Solid-Liquid Separation Methods

2. Let’s Learn The substances of every mixture possess certain physical properties which make each one distinct from the other. It is easier to separate these substances especially their properties are entirely different from one another.

3. Solid – Liquid Separation Methods Some of the common separation methods used in separating solids and liquid are the following: Decantation – In this process, the solid and liquid components of a mixture settle down and separated by gravity. Once the components are finally separated, the liquid is poured off while the solid is left behind. Decantation can also be used to separate two immiscible liquids such as oil and water. In this case, the heavier liquid settles at the bottom while the lighter rises to the top and gets poured off.

4. Example of Decantation

5. 2. Evaporation – Is the process mostly used for separating a mixture of a soluble solid and solvent (known as solution). In this process, the solution is heated until the solvent evaporates or turns or turns into gas and the solid residue is left behind.

6. 3. Filtration – Is a process of separating solid substances from a liquid through the use of filter paper or any cloth that can b e used as a filtering medium. The particles which remained on the filter paper serve as residue , and the water which passed through the filter paper serves as the filtrate .

7. Benefits of Using Solid-Liquid Separation Methods in Making Useful Products Decantation is used in searching for gold in rivers . People use pans to scoop up and twirl around a mixture of sand, mud, and gravel to find tiny particles of gold.

8. Decantation used in separating cream from milk . Since cream is less dense than milk, it settles at the top and can be easily poured off.

9. Through decantation, plasma can be removed from the blood using centrifuge . A centrifuge is like an extra-fast spin dryer. It spins a liquid so quickly that the particles separate out.

10. Salt is collected from lakes and marshes through evaporation . Water evaporates in these areas due to the wind and the sun, leaving the salt behind.

11. Filtration is one of the processes involved in water recycling . It is done through the use of zeolites or filters that have tiny holes which allow the removal of microscopic particles from the water.

12. Filtration can be done also with the use of activated carbon or charcoal, sand and gravel .

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