Abstract: The invention is directed to a process for separating an aqueous feed comprising of dissolved ammonium bicarbonate. The process comprises: a step (a) in which an electrodialysis is performed to obtain a diluate and a concentrate comprising of ammonium bicarbonate and a step (b) in which the total ammonia nitrogen (TAN) as present in the concentrate is separated from the bicarbonate ions as present in the concentrate by means of a bipolar membrane electrodialysis to a total ammonia nitrogen (TAN) alkaline fraction and a bicarbonate acid fraction.