Oil production on wastewaters after butanol fermentation by oleaginous yeast Trichosporon coremiiforme

► Oleaginous yeast Trichosporon coremiiforme was used for microbial oil production. ► Wastewaters after butanol fermentation were used for microbial oil production. ► COD degradation of the wastewaters by the treatment of T. coremiiforme was attractive. ► Biomass and lipid content of T. coremiiforme showed its potential for oil production. ► Lipid composition of T. coremiiforme showed its feasibility for biodiesel production.