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:
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.
Sorption is a concomitant phenomenon of adsorption and absorption.
Adsorption describes the phenomenon in which molecules that are present in a fluid (liquid or gas), concentrated spontaneously on a solid surface by a finite time.
Sorption is a concomitant phenomenon of adsorption and absorption.
Adsorption describes the phenomenon in which molecules that are present in a fluid (liquid or gas), concentrated spontaneously on a solid surface by a finite time.
Sorption is a concomitant phenomenon of adsorption and absorption.
Adsorption describes the phenomenon in which molecules that are present in a fluid (liquid or gas), concentrated spontaneously on a solid surface by a finite time.
Absorption is the process in which a fluid is dissolved by a liquid or a solid (absorbent). Adsorption is the process in which atoms, ions or molecules from a substance (it could be gas, liquid or dissolved solid) adhere to a surface of the adsorbent. Adsorption is a surface-based process where a film of adsorbate is created on the surface while absorption involves the entire volume of the absorbing substance.
Comparison chart
Absorption versus Adsorption comparison chart
Absorption/Adsorption
Definition
Assimilation of molecular species throughout the bulk of the solid or liquid is termed as absorption./Accumulation of the molecular species at the surface rather than in the bulk of the solid or liquid is termed as adsorption.
Phenomenon
It is a bulk phenomenon. / It is a surface phenomenon.
Heat exchange
Endothermic process / Exothermic process
Temperature
It is not affected by temperature / It is favoured by low temperature
Rate of reaction
It occurs at a uniform rate. / It steadily increases and reach to equilibrium
Concentration
It is same throughout the material. /Concentration on the surface of adsorbent is different from that in the bulk
As nouns the difference between sorption and adsorption is that sorption is (sciences) either of the processes of absorption and adsorption while adsorption is the adhesion of a liquid or gas on the surface of a solid material, forming a thin film on the surface not to be confused with the process of absorption. "
Absorption is the process in which a fluid is dissolved by a liquid or a solid (absorbent). Adsorption is the process in which atoms, ions or molecules from a substance (it could be gas, liquid or dissolved solid) adhere to a surface of the adsorbent. Adsorption is a surface-based process where a film of adsorbate is created on the surface while absorption involves the entire volume of the absorbing substance.
"The terms absorption and adsorption are used freely to indicate the same process of taking moisture from the air using desiccants, mostly because we don’t want to complicate the explanation of what our product does. But there is a difference.
Absorption generally refers to two phenomena which are largely unrelated. In one case, it refers to when atoms, molecules, or ions enter some bulk phase – gas, liquid or solid material. For instance, a sponge absorbs water when it is dry.
Absorption also refers to the the process by which the energy of a photon is taken up by another entity, for example, by an atom whose valence electrons make transition between two electronic energy levels. The photon is destroyed in the process. The absorbed energy may be re-emitted as radiant energy or transformed intoheat energy. The absorption of light during wave propagation is often called attenuation. The tools of spectroscopy in chemistry are based on the absorption of photonsby atoms and molecules.
Adsorption is similar, but refers to a surface rather than a volume: adsorption is a process that occurs when a gas or liquid solute accumulates on the surface of a solid or, more rarely, a liquid (adsorbent), forming a molecular or atomic film (the adsorbate). It is different from absorption, in which a substance diffuses into a liquid or solid to form a solution. This is what happens to calcium chloride desiccants in container shipments.
Sorption encompasses both processes, while desorption is the reverse process."
Sorption is the term used for both absorption and adsorption. Adsorption is the adhesion of atoms, ions, or molecules from a gas, liquid, or dissolved solid to a surface.
Sorption is a physical and chemical process by which one substance becomes attached to another.
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).
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).
Adsorption is usually a physical operation. If the adsorbed material interacts with the surface, then chemisorption occurs "which is a chemical process of temporary nature". Chemisorption ends up by a physical operation called desorption.
Note: In industrial chemistry & chemical engineering, a process & an operation are NOT synonems. A process denotes a chemical change while an operation refers to a physical change.
Sorption describes the actions of absorption and adsorption - desorption is the opposite of sorption. Adsorption and absorption are important processes that occur in chemistry and biology.
The major difference between adsorption and absorption is that one is a surface process and the other a bulk process.
Adsorption — takes place on the surface of a substrate
Absorption — one substance enters the bulk, or volume, of another substance e.g. a gas absorbed by a liquid
Adsorption is a surface-based process where a film of adsorbate is created on the surface while absorption involves the entire volume of the absorbing substance
Adsorption is a poorly defined term. It is recommeded to use the term sorption. Sorption describes for example the binding of chemical compounds at the surface of solids. Models to descripe sorption on solids in more detail are ion exchange and surface complexation.
I think mr. Matar is right. Sorption is both adsorption and absorption. Using the term adsorption we are talking on sorption on something. In my article I use the term adsorption of metals on surface of either FeOOH or MnO2. (adsorption can be on many other surface)
Sorption cover adsorption and absorption (surface and body phenomena, chemical and physical interaction) but adsorption represent only the surface phenomena.
Sorption is used for both adsorption and absorption processes. In adsorption, atoms, ions, or molecules (named adsorbate) from gas and liquid phases attach to a surface, while in absorption, atoms, ions, or molecules enter into a bulk of liquid or solid materials.