
Inorganic Nano porous adsorbents are nanoparticles that provide a large porous surface area for the adsorption process. Inorganic nano porous adsorbents are used mainly to treat waste water in various effluent treatment plants in industries. Inorganic nano porous adsorbents help in removing the heavy metal ions like arsenic, cadmium, chromium, copper, lead, mercury, nickel and zinc. The high selectivity of these inorganic nano porous adsorbents towards the pollutants present in water makes it easier to remove them. While choosing the Inorganic Nano porous Adsorbents, the ones with highest affinity towards the target heavy metal ion should be chosen to avoid the saturation of other particles on the adsorbents and for better efficiency. The inorganic nano porous adsorbents occur in various shapes and sizes depending on their base metal. Inorganic nano porous adsorbents can remove the pollutants at trace level due their high adsorption capacity. Depending on the method of synthesis of inorganic nano porous adsorbents, their functional properties vary accordingly due to variations in their sizes and surface areas. The industrial residues, especially, pharmaceutical industrial residues in waste water can become health hazards and need to be removed from waste water using inorganic nano porous adsorbents for a better efficiency. Inorganic nano porous adsorbents can also be used as catalysts for some industrial processes.