I have been on a project for awhile now and it has to do with production of bio ethanol production from biomass,and also how to add water in ratio 60:40. i.e ethanol will be 60% while water will be 40% without separating. I have tried to mix water with ethanol in this ratio but it keeps separating after awhile. What can I do to stop the separation? Please kindly advice on what to do. Thank you .