CALCINED EGGSHELL – DOPED BIOCHAR AS CATALYST FOR BIODIESEL PRODUCTION FROM WASTE COOKING OIL: A PROCESS OPTIMIZATION STUDY. The Transactions of the Nigerian Association of Mathematical Physics, [S. l.], v. 20, p. 93–102, 2024. DOI: 10.60787/tnamp.v20.384. Disponível em: https://nampjournals.org.ng/index.php/tnamp/article/view/384.. Acesso em: 29 sep. 2024.