Bioconversion of crude glycerol feedstocks into ethanol by Pachysolen tannophilus

► Physiological study of ethanol production from glycerol by P. tannophilus. ► P. tannophilus insensitive to batch variations in crude glycerol. ► Ethanol production of 28.1 g/L achieved in staged batch process. ► Highest reported ethanol production from glycerol in microbial bioprocess.