Upgrading of Tire-Derived Oil Quality Using Two-Stage Ultrasound-Assisted Oxidative Desulfurization and Adsorption
Authors: Abubakar, A., Gaiya, J.D. And Ahmed, U.O.
DOI Info: http://doi.org/10.5281/zenodo.12599589
ABSTRACT
Waste tire-derive oil has attracted considerable attention as an alternative fuel due to the similarity in its properties with diesel oil. Unfortunately, the tire-derived oil is usually associated with high amount of undesirable sulfur that is by far higher than the allowable limit. This necessitates its treatment before it can be suitable for use in engines. Having been adjudged to be the most efficient and the most environmentally friendly method because of its mild operating conditions, oxidative desulfurization of the tire-derived oil was adopted in this study with the assistance of ultrasound energy to further enhance its efficiency. Having optimized the process conditions oxidative desulfurization, attempt was made to further reduce the sulfur content and improve other oil properties by subjecting to selective adsorption. The results revealed sulfur removal of 76.1 % during the oxidative desulfurization at optimum temperature, time, and oxidant-to-oil ratio of 51.4oC, 46.2 min., and 1, respectively. The further treatment by adsorption brought about additional 58.4% sulfur removal resulting to a combined sulfur removal of 90.1%. There were also decreases in viscosity (34.5 %), flash point (23.4 %), and acid value (93.4%) while increases were recorded in heating value (14.9%) and cetane number (23.5%). Overall, there is a substantial improvement in the tire-derived oil quality using a combined ultrasound-assisted oxidative desulfurization and adsorption making more suitable to serve as an alternative to diesel.
Affiliations: Department of Chemical Engineering, Ahmadu Bello University, Zaria, Nigeria.
Keywords: Tire-derived Oil, Upgrading, Ultrasound Energy, Oxidative Desulfurization, Adsorption
Published date: 2024/06/30
