Problems hindering the application of electrodialysis in the sugar industry were the short anion-exchange membrane life, the high viscosity and the low operating temperature that had to be maintained below 40degreesC. To avoid these problems an electrodialysis operation using an improved stack with new anion-exchange membranes was conducted on Moroccan beet sugar syrup to remove melassigenic ions especially Na+, K+ and Ca2+. The demineralisation was operated at a relatively high Brix up to 55Bx and high temperature up to 60degreesC. The alkali resistance and the behaviour of the AXE 01 membrane in the sugar syrup were controlled. The electrodialysis is a promising process to reduce the melassigenic ions for the sugar industry.