In the present study, the combined oxidation–emulsification was used to desulfurize diesel fuel with a hydrogen peroxide–acetic acid oxidation system. A full 20 central composite design response surface method was employed to study the effect of 5-20% oxidant range, 40-100ᵒC temperature range and 20-90 min time. A 0.781% sulfur content was obtained at 12.5 wt% oxidant ratio, 65ᵒC temperature 60 mi...