Comparison the kinetics of the uptake of sugars from the draw solution

Abstract EN

The present work includes studying the kinetics of the adsorption of two sugars (maltose and glucose) on activated carbon (GAC) and comparison between them.

These sugars are used as draw solution in the forward osmosis process in MOD-SET system (manipulated osmosis desalination system, MOD combined with solute exchange technique, SET).

In this work, batch experiment in a stirred tank was carried out to study kinetics adsorption.

The experiment was carried out using HPLC to determine the concentrations of sucrose and maltose before and after adsorption.

The kinetic models used are pseudo-first order, pseudo-second order, intraparticle diffusion and mass transfer model.

The findings indicates that sucrose and maltose sorption onto GAC are both well represented by the pseudo second order model.