Decreased peak tailing during transport of solutes in porous media with alternate adsorption properties

Abstract

h i g h l i g h t s Spatial alternation of Langmuir and Anti-Langmuir adsorption zones reduces concentration overloading related band widening. Peak widening reduction is due to alternation of frontal and rear sharpening in the Langmuir and Anti-Langmuir zones. Efficiency of the Langmuir-Anti Langmuir alternation varies with details of the spatial adsorption geometry. A strategy to reduce peak broadening has been developed.

Design and Preparation of Chitosan-Crosslinked Bismuth Ferrite/Biochar Coupled Magnetic Material for Methylene Blue Removal

“…Based on Figure 11, as C 0 increased, the concentration of methylene blue adsorbed also increased; however, the removal rate decreased. According to the solvent displacement theory for liquid-phase adsorption, the diffusion rate of methylene blue is affected by temperature changes and the diffusion speed [46]. A temperature increase or viscosity decrease results in an increase in the adsorption rate and adsorption equilibrium concentration.…”