Back to Chemical Reaction Engineering  |  Previous paper  |  Next paper

Ammonia Removal From Water by a Liquid-Liquid Membrane Contactor Under a Closed Loop Regime


E. Licon1 S. Casas1 A. Alcaraz1 J.L. Cortina1 C. Valderrama1
1Universitat Polit├ęcnica de Catalunya, Barcelona, Spain


Experimental setup and evolution in different experiments of the concentration in the feeding tank with its respective simulation.

Ammonia separation from water by membrane contactor was simulated on transient state and compared with experimental data. Aqueous low concentrated solution of ammonium with high pH has been pumped inside the hydrophobic hollow fibers, acid solution in the outside part. The system is in closed loop configuration. In order to simulate the separation process, equations were developed considering radial and axial diffusion and convection with a well-developed parabolic velocity profile. The model proposed shows minimal deviations when is compared against experimental data. This study shows that the most important parameters to control during the operation are the flow rate and the pH, mainly the last one, due to high dependence in chemical equilibrium of ammonium reaction to ammonia.

Share it on Social Media: