Adsorption of silver on bentonite has been studied by using batch-technique, Distribution Co-officient (Kis) were determined for bentonite silver solution system in natural water as a faction of contact time,pH, adsorbent & adsorbate concentration and temperature. Adsorption data have been interpreted in terms of Freundlich and Langmuir equations. Thermodynamics parameters for the adsorption have been determined at three temperatures. The value of DH* = -3.62 KJ/mol and DG* = 3.61 KJ/mol at 298K suggests that the adsorption of silver on bentonite is an exothermic percent De desorption studies at low given silver loading on bentonite shows that significant %age d the element is irreversiblyadsorbed due to the fixation of the silver by isomophous replacement in the crystal lattice of the adssorbent.
S NAEEM ,U ZAFAR ,F JAMSHED ,I KHAN ,
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