Mumna MunirMushtaq AhmadAbdulaziz Abdullah AlsahliLixin ZhangSokhib IslamovShazia SultanaCassamo Ussemane MussagyAhmad MustafaMamoona MunirBisha ChaudhryMaria HamayunSarwar Khawaja2024-11-132024-11-132024-10-21Munir, M., Ahmad, M., Alsahli, A. A., Zhang, L., Islamov, S., Sultana, S., Mussagy, C. U., Mustafa, A., Munir, M., Chaudhry, B., Hamayun, M., & Khawaja, S. (2024). Harnessing non-edible Quercus incana seeds for sustainable and clean biodiesel production using seed-derived green Al2O3 nanocatalyst. Sustainable Energy Technologies and Assessments, 72, 104025. https://doi.org/10.1016/j.seta.2024.104025https://repository.msa.edu.eg/handle/123456789/6229The challenges of resource scarcity and waste deposition have increased raw material costs and imposed stricter waste management regulations. This study presents the first attempt to utilize high oil-yielding Quercus incana seeds (55.77 wt%, 0.28 % FFA) as a novel waste feedstock for synthesizing a bio-fabricated Al2O3 nanocatalyst and its application in producing high-quality biodiesel. A maximum biodiesel yield of 97.6 % was achieved under optimal conditions, including a 1:9 oil-to-methanol ratio, a 120-minute reaction time at 70 °C, and 0.25 % catalyst concentration. The formation of biodiesel was confirmed through various analytical techniques, such as 1H- and 13C NMR, FTIR, and GC–MS. Additionally, the physicochemical properties of the biodiesel, including sulfur content (0.00047 wt%), TAC (0.20 mg KOH/g), cloud point, and pour point (−11 °C), were analyzed and compared to international biodiesel standards to ensure its stability, sustainability, and eco-friendliness. The production of biodiesel from Quercus incana, a non-edible, uncultivated waste feedstock, supports a greener revolution and a net-zero carbon society. It also promotes smarter waste management practices globally.enQuercus incana seed oilProcess efficiencyGreen energy revolutionWaste managementEnvironmental protectionSustainabilityArticlehttps://doi.org/10.1016/j.seta.2024.104025