Adsorption aesorption characteristics of phenoxyacetic acids and chlorophenols in volcanic soil: single component fixed bed studites

摘要

Widespread application of herbicides and pesticides in recent years resulted in environmental contamination of soils and groundwaters. In this paper, we examine the adsorption and desorption characteristics of three phenoxyacetic acids and three chlorophenols in a volcanic soil using fixed bed soil columns. A theoretical model icorporating sorption, dispersion, film transfer and surface diffusion soils particles has been developed to predict the solute movement in fixed bed soil columns. The main feature of this model is that all the model parameters were obtained from independent experiments or from literature correlations.