Adsorption capacity and factors affecting it.

ADSORPTION CAPACITY:

               Adsorption capacity is the maximum amount of  solid surface to caught or hold in the solute particles or adsorbate.It can be shown as:
                                q_e = (C_i– C_e/ M)V
where q_{e is the amount adsorbed on the adsorbent ,M and V are the volume and mass of adsorbate .}C_{i and} C_{e is the concentration initial and at equilibrium.}

_{Factors affecting Adsorption capacity:}

       _{There are many factors that affect adsorption capacity these are:}

_{1.Size of adsorbate:}

        _{smaller size of particles is preferable .This is because equilibrium is more likely to achieved by smaller ,reduced and fine particles of adsorbate.If the adsorbate is of smaller size it can better be hold by the adsorbent.}

_{2.Contact time and surface area:}

        _{Adsorption needs time for completion more time given better will be the adsorption.Also the surface area should be large  for complete adsorption and it will lead adsorption to equilibrium position.}

_{3.Neutral particles and sparingly soluble adsorbate show better adsorption :}

        _{neutral molecules are easily adsorbed than ionizable molecules because when ionization occurs charges dispersed in .Sparingly soluble particles are easily adsorbed on to the surface then soluble  substances.}

_{4. Size of Pores to adsorbate size:}

         _{As we know very well adsorbent contains pores through which adsorption occurs .If size of adsorbate is larger than size of pores than there is will be definately problem so size of pores should be in accordance with the adsorbate size.}