Adsorption operations exploit the ability of certain solids preferentially to concentrate specific substances from solutions onto their surfaces. In these operations the mixture to be separated is brought into the contact with another insoluble phase, the adsorbing solid and the unequal distribution of the original constituents between the solid surface and the bulk of the fluid permits a separation to be made. The solid is known as adsorbent and the component adsorbed is known as adsorbate. The common adsorbents are: activated carbon, silica gel, activated alumina etc. This work is aimed for utilization by researchers, industrialists' and traditional businesses. Apart from this it will be especially relevant and useful for the students of Chemical & Process Engineering for carrying out research in this area.