“Oh GOSH! Reflecting on Hackteria's Collaborative Practices in a Global Do-It...
Adsorption
1. 1. It is a surface phenomenon and refers to the
uniform distribution of a substance through
another at the surface e.g. solution of H2 in Pd.
2. It is the phenomenon in which a layer of ions,
molecules or aggregates of molecules condense
upon the surface with which they come in
contact.
3. It is defined as the concentration of a substance
at the interface or boundary between
heterogeneous phases e.g. solid/ gas or two
immiscible liquids
2. Adsorbate
It is the substance which is adsorbed at
the surface of another substance
Examples are: gases, dyes, water vapors
etc.
3. Adsorbent
It is the substance which adsorbs the
other substance at its surface.
Examples are: activated charcoal, bone
charcoal, alumina, silica gel, kaolin and
filler’s earth.
4. Order Of Adsorption
I. Liquid/ Solid adsorption
II. Solid/ Gas adsorption
III. Liquid/ Gas adsorption
IV. Liquid/ Liquid adsorption
8. Factors effecting the
adsorption
Solubility of adsorption
Nature of Adsorbate
Nature of adsorbent
Concentration of adsorbent
Pressure
Temperature
pH
Affinity between adsorbent and adsorbate
Stirring
9. Pharmaceutical Applications of
adsorption
1. Activated charcoal
2. Physiological Importance
3. Purification
4. Preparation of Vitamin B1
5. Gas masks
6. Heterogeneous Catalysts
7. Bacterial filtration
8. Solid-liquid chromatography
9. Emulsification
10.Decolonization
11.Adsorption of water vapors