Adsorption of o-Chlorobenzoic Acid from Alcohol-Aqueous Solution on Activated Carbon.

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  • アルコール水溶液中のｏ‐クロロ安息香酸の活性炭吸着
  • アルコール スイヨウエキチュウ ノ o クロロ アンソクコウサン ノ カッセイ

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Abstract

The present work is aimed at determining the effective surface diffusion coefficients, Ds, and adsorption equilibriums during adsorption of o-chlorobenzoic acid on activated carbon from aqueous solution and alcohol aqueous solution (Methanol, Ethanol and n-Propanol) by batch operation. The solubility of o-chlorobenzic acid into the alcohol aqueous solution changed about 100-fold as alcohol concentration rose from 0% to 100%. This aim of work is to formulate, by chemical potential theory, adsorption isotherms and Ds during adsorption from alcohol aqueous solution.<BR>As a result of this work, the investigated concentration range can be represented by Freundlich type isotherms. Ds depend on the amount of o-chlorobenzoic acid adsorbed and the solubility. The adsorption equilibriums and Ds can be formulated by chemical potential theory.

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