Repositorio Institucional Universidad EAFIT :: Examinando por Materia "Petroleum coke"

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Evaluación del coque del petróleo como material adsorbente para la remoción de fenol
(Universidad EAFIT, 2025-11-07) Mideros Baldovino, Daniel Alejandro; Viera Barrios, Mariana Lucía; Builes Toro, Santiago
Petroleum coke is a solid by-product of petroleum refining with a high carbon content. Despite its potential for higher value-added applications, this by-product is often used for combustion in the cement and steel industries. This study evaluated its use as an adsorbent for the removal of phenol in aqueous solution, through thermal and chemical activation with KOH, defining the activation conditions based on thermogravimetric analysis (TGA). The adsorption isotherms were fitted to the Freundlich and Krishnamurti models to determine the adsorption capacities and evaluate the economic viability compared to commercial activated carbon. The results showed that the activation temperature significantly influences the microporosity and density of active sites. Coke activated thermally at 900°C for 45 min presented the best ratio between adsorption capacity and cost (≈100,000 COP m⁻³). Although commercial activated carbon achieved a higher capacity (≈100 mg g⁻¹), its total cost was 60% higher. Chemically activated coke showed a maximum capacity of 5.07 mg g⁻¹, but with high operating costs. These results demonstrate that thermally activated coke is a technically and economically viable alternative for phenol removal.