In addition to what Dr. Royer said, sorption processes could include desorption in which part of the adsorbed ions or molecules leave the adsobent

thank you

Dear Prof. Dr. Abdulsattar Jubair Zaben,

The difference between Sorption and Adsorption that occurs in the soil.

01. Sorption:

• Sorption is a physical and chemical process by which one substance becomes attached to another.
• Sorption includes both adsorption (which means accumulation of a substance at the surface of a solid or a liquid) & absorption (which means assimilation of a substance within the bulk of a solid or liquid). Absorption is 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 water).
• Most sorption technologies act like a sponge or a filter, soaking up contaminants until they run out of surface area. Sorption in remediation processes as an add-on to Pump and Treat systems, in spill containment and cleanup, and in the subsurface.

02. Adsorption:

• Adsorption is the adhesion in an extremely thin layer of molecules (as of gases, solutes, or liquids) to the surfaces of solid bodies or liquids with which they are in contact, or
• Adsorption is the physical adherence or bonding of atoms, ions and/or molecules from a gas, liquid or dissolved solid to a surface. This process creates a film of the adsorbate on the surface of the adsorbent. This process differs from absorption, in which a fluid is dissolved by or permeates a liquid or solid, respectively.
• It is the most common form of sorption used in cleanup.
• Unless it is clear which process is operative, sorption is the preferred term.

I hope the information will help you.

With Best Wishes,

Samir G. Pandya

I agree with the submission by Samir G. Pandya

Thank you Mr. Samir and Mr.Emil

Hi Dr Abdulsattar Jubair Zaben . The two terms are are the same . The adsorption is the process where the molecules of guest (chemicals) adhere on the surface of the host (soil). See the following useful RG link for more information: Article Analogy between adsorption and sorption: An elementary mecha...

Kindly see also the following us RG link: https://www.sciencedirect.com/topics/earth-and-planetary-sciences/sorption

Also kindly see the following useful link: https://www.sciencedirect.com/topics/earth-and-planetary-sciences/adsorption

This video explains the most important terms commonly used in surface chemistry such as adsorption, absorption, sorption, desorption, adsorbent and adsorbate: https://youtu.be/oMM_YeyLhkc