Separation of chemicals | Wikipedia audio article
Channel: wikipedia tts
Date: 05/05/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Separation_process


00:01:42 1 Complete and incomplete separation
00:02:44 2 Separating liquids
00:04:03 3 List of separation techniques
00:04:29 3.1 Chromatography
00:05:39 4 Electrophoresis
00:06:19 5 Extraction
00:06:43 6 Flotation
00:08:50 7 See also



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SUMMARY
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A separation process is a method that converts a mixture or solution of chemical substances into two or more distinct product mixtures. At least one of results of the separation is enriched in one or more of the source mixture's constituents. In some cases, a separation may fully divide the mixture into pure constituents.  Separations exploit differences in chemical properties or physical properties (such as size, shape, mass, density, or chemical affinity) between the constituents of a mixture.
Processes are often classified according to the particular differences they use to achieve separation. If no single difference can be used to accomplish a desired separation, multiple operations can often be combined to achieve the desired end.
With a few exceptions, elements or compounds exist in nature in an impure state.  Often these raw materials must go through a separation before they can be put to productive use, making separation techniques essential for the modern industrial economy. 
The purpose of a separation may be analytical, can be used as a lie components in the original mixture without any attempt to save the fractions, or may be preparative, i.e. to "prepare" fractions or samples of the components that can be saved. The separation can be done on a small scale, effectively a laboratory scale for analytical or preparative purposes, or on a large scale, effectively an industrial scale for preparative purposes, or on some intermediate scale.