Application of the Dubinin-Radushkevich equation to iodine adsorption by activated carbons from aqueous solution

✍ Scribed by Takeshi Meguro; Naochika Torikai; Naoki Watanabe; Isao Tomizuka

• Publisher: Elsevier Science
• Year: 1985
• Tongue: English
• Weight: 457 KB
• Volume: 23
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(85)90003-x

✦ Synopsis

An

investi~atjon was made on the adsorption hehaviour of activated carbons in KI aqueous solution containing very small amounts of j2. Among the major solutes in the solution, I-, f; and I:, only IL was found to be adsorbed on the carbon. The amount of the solute for a given activated carbon was determined exclusively by the concentration of "free I," in the solution. The adsorption isotherms observed during adsorption suggested that the so-called pore filling mechanism was in progress. The values of (IV,},, the limiting volume of adsorption space, observed for five activated carbons of different origins or surface areas varied from one sample to another and they were compared by ratio to the pore volume determined by a gas adsorption technique.