Question

give reasons:decantation and filtration are not the best method to purify water​

Answer 1

Explanation:

Decantation is a process for the separation of mixtures, carefully pouring a solution from a container, leaving the precipitate (sediments) in the bottom of the container. Filtration is a mechanical/physical operation which is used for the separation of solids from fluids (liquids or gases) by interposing a medium (filter) to fluid flow through which the fluid can pass, but the solids (or at least part of the solids) in the fluid are retained. Decantation is supposed to be faster, but may produce a not so clear filtrate. Filtration could produce a clearer filtrate, but may take more time, especially when a thick layer of solids has formed on the filter. However, filtration using vacuum technology could be fast.

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