Optimized Ultrasound-Assisted Oxidative Desulfurization Process of Simulated Fuels over Activated Carbon-Supported Phosphotungstic AcidPeniel Jean Gildo, Nathaniel Dugos, Susan Roces and Meng-Wei WanMATEC Web Conf., 156 (2018) 03045DOI: https://doi.org/10.1051/matecconf/201815603045