Iranian Journal of Chemistry and Chemical Engineering, ( ISI ), Year (2021-2)

Title : ( Optimization of adsorption parameters using central composite design for the removal of organosulfur in diesel fuel by bentonite-supported nanoparticle NiO-WO3 )

Authors: Toktam Pedram , Zarrin Eshaghi , Ali Ahmadpour , Ahmad Nakhaei ,

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Abstract

Desulfurization using porous materials is based on the capability of a solid sorbent to selectively adsorb organic sulfur-containing compounds. In the present study, different sorbents were prepared by varying the NiO/WO3 loadings onto bentonite for the removal of sulfur from commercial diesel fuel containing approximately 100 ppm total sulfur (S). X-Ray Diffraction (XRD), Fourier Transform InfraRed (FT-IR) spectroscopy, and Scanning Electron Microscopy (SEM) showed the ability of modified bentonite to adsorb dibenzothiophene (DBT) depends strongly on the surface chemistry, particularly on the presence of basic oxygen-containing groups and acid content. A Plackett–Burman Design (PBD) was chosen as a screening method to estimate the relative influence of the factors that could have an influence on the analytical response. The significant variables included: sorbent amount, feed volume, extraction solvent kind, and its volume were optimized using Central Composite Design (CCD). 93.5% removal of sulfur was observed with NiO@WO3@bentonite.

Keywords

Nanoparticles; Metallic composites; Desulfurization; Diesel fuel.