Yakubu L. JUMARE, Samaila UMARU, Muhammad U. KAISAN, Mohammed MOHAMMED. Optimization of Biodiesel Yield from Neem Seed Oil Using Calcined Eggshell Catalyst: Characterization and Performance Analysis. UJET [Internet]. 2026 Jan. 10 [cited 2026 Feb. 4];3(1):82-97. Available from: https://ujet.uniabuja.edu.ng/index.php/ujet/article/view/124