What are the differences between absorption and adsorption?

Question

Accepted Answer

Basis of differentiation

Adsorption

Absorption

definition

Accumulation of substance at the surface; this process creates a film on the surface

Assimilation of substance throughout the solid or liquid; a fluid becomes dissolved by a liquid or a solid

Rate of reaction

It increases steadily until it reaches equilibrium

Remains at the same rate

Temperature

Efficient at low temperatures

Not affected by temperature

Heat exchange

Exothermic process

Endothermic process

Concentration

The amount of substance at the surface of the adsorbent material is not the same as its concentration within the bulk

Remains the same throughout the substance

Basis of differentiation	Adsorption	Absorption
definition	Accumulation of substance at the surface; this process creates a film on the surface	Assimilation of substance throughout the solid or liquid; a fluid becomes dissolved by a liquid or a solid
Rate of reaction	It increases steadily until it reaches equilibrium	Remains at the same rate
Temperature	Efficient at low temperatures	Not affected by temperature
Heat exchange	Exothermic process	Endothermic process
Concentration	The amount of substance at the surface of the adsorbent material is not the same as its concentration within the bulk	Remains the same throughout the substance