Adsorption of 2,4,5‐T by active carbons from aqueous solution

Abstract

AbstractThe adsorption isotherms of 2,4,5‐trichloroacetic acid (2,4,5‐T) on activated carbons from aqueous solution have been obtained at several temperatures (10 to 50°C). The activated carbons used were Merck (No. 2514) and another one prepared from almond shells (C‐A‐14).Monolayer capacities, XM, were obtained by applying different theoretical models, such as BET, Langmuir and López‐González, to our data. The XM values were of the order of 10−3 mol g−1, being the lowest corresponding to the Merck sample. Surface areas of the two carbon samples, accessible to the molecules of 2,4,5‐T, have also been determined as well as some thermodynamic data corresponding to the adsorption process.