What are the applications of adsorption in chemical analysis?


The applications of adsorption include-


Gas masks – It is a device which consists of activated charcoal or some mixture of adsorbents. It is worn in region like coal mines where it adsorbs the poisonous gases like CO, CH4, etc.


Control of humidity – Silica and aluminium gels are used as adsorbents for removing moisture and in controlling the humidity.


Removal of colouring matter from solutions – Animal charcoal is used as decolouriser in the sugar industry.


Heterogeneous catalysis – Adsorption of reactants on the solid surface of the catalysts increase the rate of a reaction.


Separation of inert gases – A mixture of noble gases can be separated by adsorption on coconut charcoal at different temperatures. This is because these gases are adsorbed to different extent by the charcoal.


Deionisation of water – Water is deionised with the help of different anionic and cationic exchange resins. These resins adsorb different ions present in water and thus making it free from ions.


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