In this work

the regeneration mechanism of potassium carbonate solution after absorption of CO

2

using ion-exchange membrane electrolysis was presented.The solutions of potassium carbonate (K

2

CO

3

) and potassium bicarbonate (KHCO

3

) were used to simulate the solution after absorbing CO

2

.Experiments were carried out at various electrodes

temperatures and current densities.The results indicate that the membrane electrolysis can in-crease concentration ratio of K

2

CO

3

and KHCO

3

and achieve 100% conversion.In thisprocess

not only CO

2

is desorbed from carbonate solution

but also hydrogen

as a byproduct

is generated at the cathode

which is the main contributor to reduce energy consumption.Thus

the membrane electrolysis is valuable in the regeneration of the K

2

CO

3

absorbent.