Waste cooking oil processing over cobalt aluminate nanoparticles for liquid biofuel hydrocarbons production

Abstract

The catalytic conversion of waste cooking oil (WCO) was carried out over a synthetic nano catalyst of cobalt aluminate (CoAl2O4) to produce biofuel range fractions. A precipitation method was used to create a nanoparticle catalyst, which was then examined using field-emission scanning electron microscopy, X-ray diffraction, energy dispersive X-ray, nitrogen adsorption measurements, high-resolution transmission electron Microscopy (HRTEM), infrared spectroscopy, while a gas chromatography-mass spectrometer (GC–MS) was used to analyze the chemical construction of the liquid biofuel. A range of experimental temperatures was looked at including 350, 375, 400, 425, and 450 °C; hydrogen pressure of 50, 2.5, and 5.0 MPa; and liquid hour space velocity (LHSV) of 1, 2.5, and 5 h−1. As temperature, pressure, and liquid hourly space velocity increased, the amount of bio-jet and biodiesel fractional products decreased, while liquid light fraction hydrocarbons increased. 93% optimum conversion of waste cooking oil over CoAl2O4 nano-particles was achieved at 400 °C, 50 bar, and 1 h−1 (LHSV) as 20% yield of bio-jet range,16% gasoline, and 53% biodiesel. According to the product analysis, catalytic hydrocracking of WCO resulted in fuels with chemical and physical characteristics that were on par with those required for fuels derived from petroleum. The study's findings demonstrated the nano cobalt aluminate catalyst's high performance in a catalytic cracking process, which resulted in a WCO to biofuel conversion ratio that was greater than 90%. In this study, we looked at cobalt aluminate nanoparticles as a less complex and expensive alternative to traditional zeolite catalysts for the catalytic cracking process used to produce biofuel and thus can be manufactured locally, which saves the cost of imports for us as a developing country.

Research on the Impact of Supplying the Air-Cooled D21A1 Engine with RME B100 Biodiesel on Its Operating Parameters

“…B20-B80 biodiesel blends showed lower emissions of the exhaust gas (except for the NO x level), while the hybrid fuel was characterized by a significant reduction in NO x level and comparable emissions of other exhaust gas (except unburned hydrocarbons) due to lower thermal efficiency compared with petrodiesel. Research results [38][39][40] have confirmed the feasibility of using mixtures of pongamia oil (MEOP), a 20% mixture of methyl ether of mahua oil (MEOM), and a 20% mixture of methyl ether of hybrid vegetable oil (MEHVO) with 80% pure diesel. However, a study of the influence of this fuel on technical and operational indicators has not been conducted.…”