Catalytic deoxygenation with SO42--Fe2O3/Al2O3 catalyst: Optimization by Taguchi method

• Published in: Results in engineering Vol. 17; p. 100959
• Main Authors: Shafihi, U., Hafriz, R.S.R.M., Arifin, N.A., Nor Shafizah, I., Idris, A., Salmiaton, A., Razali, N.M.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.03.2023; Elsevier
• Subjects: Catalytic deoxygenation; Green diesel; Heterogeneous acid catalyst; Optimization; Pyrolysis; Waste cooking oil; Heterogeneous acid catalyst; Pyrolysis; Waste cooking oil; Catalytic deoxygenation; Green diesel; Optimization
• ISSN: 2590-1230; 2590-1230
• DOI: 10.1016/j.rineng.2023.100959

This work investigates the optimization of reaction parameters with the Taguchi method for catalytic deoxygenation of waste cooking oil (WCO) as an alternative renewable fuel process. Commercial sulphated-ferric (II) oxide/alumina oxide catalyst has the potential as a deoxygenation catalyst due to its good physicochemical properties which enhance the removal of oxygenated species. The obtained pyrolysis oil analysed by GC-MS revealed the selectivity of the pyrolysis oil mostly in the range of light diesel and kerosene fraction. From an analysis of variance (ANOVA), temperature awarded the most significant impact (86.62%) in this catalytic deoxygenation as compared to three other parameters followed by reaction time > N2 flow > catalyst loading. From the GC-MS analysis, the maximum renewable diesel fraction of 49.66% was obtained at 400 °C, 1 wt% of catalyst, 90 min of reaction time and 20 cm3/min N2 flow. The predicted model by Taguchi in the present study validated by the experimental work shows a promising application in optimising the catalytic pyrolysis process for future use. •Catalytic deoxygenation reaction was catalysed by solid acid catalyst, SO42--Fe2O3/Al2O3.•SO42--Fe2O3/Al2O3 has the potential as a deoxygenation catalyst due to acid properties.•Pyrolysis oil selectivity is mostly in the range of light diesel fraction and kerosene (C11–C17).•Temperature gave the most significant impact (86.62%) on catalytic deoxygenation of WCO.•Taguchi method is a promising application in optimising the catalytic deoxygenation of WCO.