September 5, 2025Langmuir

Sulfur Removal from Heavy Crude Oils Based on the Adsorption Process Using CuO- and AgO-Modified SiO₂-Based Nanomaterials: Experimental and Theoretical Study

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SiAg1.5Cu1.4 achieved ∼390 mg of S·g–1 adsorption, outperforming undoped SiO2 by 4.9 times.
Dynamic tests showed a breakthrough time of ∼350 min for the best nanomaterial at varying temperatures.
Adsorption isotherms indicated multilayer adsorption behavior, fitting Freundlich and Solid–Liquid Equilibrium models.
Numerical simulations confirmed model predictions closely matched experimental results, facilitating scalable designs.

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Experimental and theoretical analysis shows improved sulfur removal efficiency with CuO and AgO in heavy crude oil applications.

Médina et al. (2025) studied this question.

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