Abstract
The strong basic resin adsorbent IRA-400 was selected from six basic resins to separate fumaric acid from mixed solution of fumaric acid and glucose. Adsorption behavior of IRA-400 was studied by using static and dynamic adsorption methods, including the fumaric acid and glucose adsorption at different pH and glucose concentrations, static equilibrium adsorption, adsorption kinetics, dynamic adsorption and elution. The results showed that IRA-400 had higher affinity for fumaric acid than glucose at higher glucose concentration. The adsorption data were well correlated with Freundlich isotherm equation with its characteristic parameter n>1. Besides, the adsorption kinetics with IRA-400 was mainly controlled by liquid film diffusion, and it fit well into the Boyd function of liquid film diffusion model. Liquid film diffusion rate coefficient (k') was less than 0.15 min-1 at different pH values. Dynamic adsorption results showed that fumaric acid and glucose were separated effectively when the resin IRA-400 was eluted by deionized water and 1 mol/L NaOH alternatively.
| Original language | English |
|---|---|
| Pages (from-to) | 138-142 |
| Number of pages | 5 |
| Journal | Guocheng Gongcheng Xuebao/The Chinese Journal of Process Engineering |
| Volume | 9 |
| Issue number | 1 |
| State | Published - Feb 2009 |
Keywords
- Adsorption
- Base resin adsorbent
- Fumaric acid
- Glucose