Background: Diesel mainly consists of paraffin and thio-aromatic compounds. Sulfur
present in diesel exhaust is the major challenge for oil refineries. Sulfur is an oxidizing element that
discharges as acute pollutant in the environment, having adverse effects on human and animal life.
Introduction: The scope of this review paper is to discuss and highlight the recent advancements in
the process of desulfurization of diesel oil to explore the less energy-intensive and more economical
Methods: Recently, different techniques are widely used for desulfurization of diesel oil to remove
sulfur containing compounds from diesel. These techniques mainly involve hydrodesulfurzation,
oxidative desulfurization, biodesulfurization, ionic liquid desulfurization, and adsorption desulfurization.
Conclusion: Adsorptive desulfurization technique is green, less energy incentive, and more economical
than hydro-desulfurization, oxidative desulfurization, ionic liquid desulfurization and bio desulfurization.
Optimization of adsorptive desulfurization technique may yield up to 100% desulfurization
of diesel oil.