Valorization of Hazardous Organic Solid Wastes towards Fuels and Chemicals via Fast (Catalytic) Pyrolysis

The management of municipal and industrial organic solid wastes has become one the most critical environmental problems in modern societies. Nowadays, commonly used techniques are incineration, composting, landfilling, with former being common for hazardous wastes. An alternative eco-friendly method that offers a sustainable economically viable solution is fast pyrolysis, important thermochemical processes petrochemical biomass valorization industry. objective this work was to study application pyrolysis three types wastes, i.e., petroleum-based sludges sediments, residual paints left on used/scrap metal packaging, creosote-treated wood waste, towards high-added-value fuels, chemicals, (bio)char. Fast experiments were performed lab-scale fixed-bed reactor determination product yields, (bio)oil, gases, solids (char). In addition, composition (bio)oil also determined by Py/GC-MS tests. thermal oil from petroleum sludge only 15.8 wt.% due remarkably high content ash (74 wt.%) type contrast treated (also containing 30 inorganics), which provided 46.9 35 oil, respectively. gaseous products ranged ~7.9 (sludge) 14.7 (wood) 19.2 (paints), while respective (ash, char, reaction coke) values 75.1, 35, 36.9 wt.%. (non-catalytic) paint contained relatively concentrations short acrylic aliphatic ester (i.e., n-butyl methacrylate), valuable monomers polymer use an acidic zeolitic catalyst (ZSM-5) situ upgrading vapors induced changes yields (decreased cracking reactions increased gases char/coke), but mostly composition. main effect ZSM-5 zeolite that, all catalytic oils enriched value-added mono-aromatics (BTX), especially case waste paints. non-condensable consisting CO, CO2, different amounts C1–C4 hydrocarbons, depending initial feed or not production ethylene propylene.