Sorption

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

Sorption is a phenomena physical and chemical process by which one substance becomes attached to another. Specific cases of sorption are treated in the following articles:

• Absorption - the incorporation of a substance in one state into another of a different state (e.g., liquids being absorbed by a solid or gases being absorbed by a liquid);
• Adsorption - the physical adherence or bonding of ions and molecules onto the surface of another phase (e.g., reagents adsorbed to a solid catalyst surface);
• Ion exchange - an exchange of ions between two electrolytes or between an electrolyte solution and a complex.