Question

What is sedimentation and decantation?​

Answer 1

Sedimentation :-

It is defined as the separation process in which solids are separated from the liquid. All the solids settle down at the bottom of a beaker and on top, a clear layer of liquid is obtained. Sedimentation is a process by which heavier impurities present in liquid normally water settle down at the bottom of the container containing the mixture. The process takes some amount of time.

Example:

• Water treatment plants use the method of sedimentation to filter out unwanted particles from unclean water.

Decantation :-

It is defined as the separation process in which two immiscible liquids are separated. This is done by pouring out the clear upper layer of liquid. Separation of a mixture of oil from water is an example of decantation.

Example:

• This process can also be used to separate two liquids that do not mix e.g., oil and water. When we leave the mixture of oil and water, two separate layers are formed, with water at the bottom and oil, being lighter, at the top. We can remove the oil layer from the top by pouring it into another vessel, which leaves us with the water layer at the bottom.

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Answer 2

Answer :

• The process in which the sediment set down is called as sedimentation.

• The process of seperating fresh water and sediment is called as decantation.

Diagram :

• In above attachment, there was step by step process is given, hope you can understand !

Definition :

• Settling down of heavier solid particles from a mixture is called as sedimentation. Like mud or rock grains settles from muddy water.

• Pouring out of upper portion fresh layer of liquid into another container to separate two immiscible liquids and down portion solid.

Difference :

• Sedimentation - here sediment set down and the fresh water get up.

• Whereas, Decantation - here the fresh upper portion was seperated.