Removal of Mn(II) from Aqueous Solution: Static and Dynamic Studies

Abstract

The removal of Mn(II) from aqueous solution by using hematite, an inexpensive adsorbent, has been investigated. Both static and dynamic studies of the kinetics of the adsorption process have been reported. The batch and column studies reveal that hematite is an efficient adsorbent for removal of Mn(II) from aqueous solution. From the batch studies it is seen that the equilibrium data of the adsorption of Mn(II) on hematite follows Langmuir isotherms and the velocity of mass transfer of Mn(II) on hematite is large enough to ensure its efficient removal from aqueous solution. The column studies reveal that the adsorption of Mn(II) on hematite follows the bed depth service time (BDST) model and the adsorption depends on the flow rate of the influent as well as on the depth of the homogeneous column of the adsorbent.