Electrodialysis for the concentration of ethanolamine salts

► Monoethanol amine salts can be concentrated up to 18 wt% using electrodialysis. ► The output concentration strongly depends on the applied current density. ► Water diffusion plays a major role at low current densities. ► Current utilization is ∼80%, independent of conditions. ► The power consumption under typical electrodialysis conditions is 0.35 kWh/g MEA.