Abstract
AbstractNowadays, the intensification of the production of biodiesel from non-edible oil crops is mandatory to overcome petrol-fuel depletion and environmental pollution. For the first time, enhanced biodiesel production from castor oil via rotor–stator hydrodynamic cavitation has been studied in this work. Response surface methodology based on one-factor-at-a-time design of experiments was employed for modelling and optimizing the biodiesel yield and the decrease in feedstock viscosity, density, and total acid number (TAN). The predicted optimum parameters of 8.15:1 methanol:oil (M:O), 1499 rpm, 29.38 min, 48.43 °C, and a KOH catalyst concentration of 0.74 wt.% resulted in a 96% biodiesel yield with a concomitant decrease in viscosity, density, and TAN of approximately 95%, 5.12%, and 90.02%, respectively. According to the results of the breakthrough kinetic calculations, the reaction is pseudo-second order, with the activation energy, frequency factor, and reaction rate constant being 0.23 M−1 min−1, 18.77 kJ/mol, and 6.32 M−1 min−1, respectively. The fuel properties of the produced biodiesel and bio-petro-diesel blends were good, comparable to international standards and the marketed Egyptian petro-diesel.
Funder
Egyptian Petroleum Research Institute
Publisher
Springer Science and Business Media LLC
Reference49 articles.
1. ASTM. (2010). Annual Book of ASTM Standards. Petroleum Products and Lubricants (I–III), 05.01–05.03. West Conshohocken, PA: American Society for Testing and Materials.
2. ASTM Standard D6751. (2008). Standard specification for bio-diesel fuel (B100) blend stock for distillate fuels. ASTM, West Conshohocken, PA.
3. ASTM Standard D7467–15ce1. (2013). Standard Specification for Diesel Fuel Oil, Biodiesel Blend (B6 to B20). West Conshohocken, PA: American Society for Testing and Materials.
4. Aboelazayem O, El-Gendy NSh, Abdel-Rehim AA, Ashour F, Sadek MA (2018) Biodiesel production from castor oil in Egypt: process optimisation, kinetic study, diesel engine performance and exhaust emissions analysis. Energy 157:843–852. https://doi.org/10.1016/j.energy.2018.05.202
5. Angassa K, Tesfay E, Weldmichael TG, Kebede S (2023) Response surface methodology process optimization of biodiesel production from castor seed oil. J Chem. https://doi.org/10.1155/2023/6657732