“…In this context, the use of available and amortized refinery units (mainly fluid catalytic cracking, FCC, and hydroprocessing units) could contribute to intensify high-quality fuel production from these non-biodegradable wastes (Waste Refinery) [5,30]. FCC units and catalysts have shown an outstanding versatility to treat non-alternative feedstock, usually blended with vacuum gas oil (VGO) [31,32], such as, secondary refinery streams (naphtha, waxes, residues) [33][34][35][36][37], biomass-derived feeds (bio-oil, pyrolysis oil, vegetable oils and animal fats) [38][39][40][41][42][43][44][45][46][47], and plastic wastes [35,48,49]. The possibility of upgrading STPO alone and/or blended with VGO has been reported by several authors [29,50,51].…”