Recycling of acetate and ammonium from digestate for single cell protein production by a hybrid electrochemical-membrane fermentation process

•A hybrid electrochemical-membrane fermentation process was developed.•Higher voltage of electrodialysis recovered more nutrients but with lower current efficiency.•Forward osmosis concentrated the acetate and ammonium in recovery by 14- and 10-fold.•Saccharomyces cerevisiae fed on recoveries achieved SCP productions of 0.76–0.86 g/L.•The SCP production costs was estimated to be €20.4/kg-SCP with ED-fermentation.