Krishnamoorthy, RamalingamVenkatesan, Elumalai PerumalVellaiyan, SureshMukhtar, AzfarizalSharifpur, MohsenHizam Md Yasir, Ahmad ShahSaleel, C. Ahamed2024-10-032024-10-032023-09Krishnamoorthy, R., Venkatesan, E., Vellaiyan, S. et al. 2023, 'Substitution of diesel fuel in conventional compression ignition engine with waste biomass-based fuel and its validation using artificial neural networks', Process Safety and Environmental Protection, vol. 177, pp. 1234-1248. https://DOI.org/10.1016/j.psep.2023.07.085.0957-5820 (print)1744-3598 (online)10.1016/j.psep.2023.07.085http://hdl.handle.net/2263/98458This study aims to derive bioenergy from waste lather fat and citronella grass. Lather fat oil (LFO), citronella grass oil (CGO), a mixture of leather fat oil and citronella grass oil (LFCGO), and a nano-additive-incorporated mixture of lather fat oil and citronella grass oil (NFCO) were synthesized and used in diesel engines as the novelty of this study. ASTM standards were used to investigate and guarantee the fuel’s properties. According to the experimental report, the nanoadditive’s brake thermal efficiency and brake-specific fuel consumption were more comparable to diesel fuel. Compared to diesel, the NFCO blend reduced hydrocarbon, carbon monoxide, and particulate emissions by 6.48%, 12.33%, and 16.66%, respectively, while carbon dioxide and oxides of nitrogen emissions increased. The experiment’s outcomes were verified using an artificial neural network (ANN). The trained model exhibits a remarkable coefficient of determination of 98%, with high R values varying from 0.9075 to 0.9998 and low mean absolute percentage error values ranging from 0.97% to 4.24%. Based on the experimental findings and validation report, it can be concluded that NFCO is an efficient diesel fuel substitute.en© 2023 The Authors. This is an open access article under the CC BY-NC-ND license.Waste to energyNano additivePeel oilNOx emissionBioenergyWaste lather fatLather fat oil (LFO)Citronella grass oil (CGO)Leather fat oil and citronella grass oil (LFCGO)Diesel enginesNano-additive-incorporated mixture of lather fat oil and citronella grass oil (NFCO)Artificial neural network (ANN)SDG-07: Affordable and clean energySDG-12: Responsible consumption and productionSDG-09: Industry, innovation and infrastructureArticle