CARBON SORBENT DERIVED FROM PETROLEUM COKEAND POLYETHYLENE TEREPHTHALATE WASTE

The article describes research on producing carbon sorbents through co-thermal treatment of sulfur-rich petroleum coke and polyethylene terephthalate (PET) waste. It was established that incorporating 25–30 wt.% PET into ground petroleum coke, followed by granulation and activation in an inert atmosphere at 370–600°C, yields a material with favorable adsorption properties. Nitrogen adsorption/desorption isotherms at 77 K for the synthesized sorbents and raw petroleum coke are presented. Using the Grand Canonical Monte Carlo (GCMC) modeling method, pore distribution patterns in the obtained sorbents were determined. Results of IR spectroscopy analysis of the by-product formed during activation of petroleum coke-PET mixtures are detailed. The resulting sorbent was proven effective for adsorptive purification of methyldiethanolamine solutions.