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, scanning electron microscopy (SEM) were used for the characterization of the modified bentonite. 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.
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