Sorption

Sorption is a physical and chemical process by which one substance becomes attached to another.

Specific cases of sorption are treated in the following articles: The reverse of sorption is desorption.

The adsorption and absorption rate of a diluted solute in gas or liquid solution to a surface or interface can be calculated using Fick's laws of diffusion.

Gas–liquid absorption (a) and liquid–solid adsorption (b) mechanism. Blue spheres are solute molecules.