What process is utilized to remove chlorine and chloramine from tank water?

The process of removing chlorine and chloramine from tank water is best described by adsorption. In adsorption, contaminants adhere to the surface of a solid material, such as activated carbon, which is commonly used in water filtration systems. When tank water passes through a medium that has strong adsorptive properties, like activated carbon, the chlorine and chloramine molecules are attracted to and bind with the surface of the carbon particles. This effectively reduces their concentration in the water, making it safer and more suitable for use in hemodialysis and other applications.

Unlike other processes, adsorption specifically involves the accumulation of substances on the surface of an adsorbent material, allowing for the targeted removal of harmful chemicals from water. This differentiates it from absorption, which would involve a substance being taken into the internal structure of another material. Diffusion and osmosis are processes related to the movement of molecules and ions and do not specifically target the removal of chlorine and chloramine in the same effective manner as adsorption does.