Adsorption et electrosorption competitive de composes organiques (chloroforme, acide benzoique, phenol) sur charbon actif en grains

摘要

A study of the competitive adsorption of organic compounds onto granular activated carbon was made with or without electrochemical polarisation of the adsorbent. Chosen models were chloroform/benzo#xEF;c acid and chloroform/phenol. Without polarisation the presence of a second compound in the solution induces a reduction of the adsorption of the first one. A positive polarisation increases adsorption of chloroform, reducing those of phenol or benzo#xEF;c acid. A negative polarisation has the inverse effect. A molecular model is proposed to justify these phenomena.