The characteristics of waste, cooking oil biodiesel by non-catalytic methodsBellina Yunitasari, Yuli Panca Asmara, Aris Ansori, Muhaji, Aisyah Endah Palupi, Handini Novita Sari and Dany Iman SantosoBIO Web Conf., 171 (2025) 02010DOI: https://doi.org/10.1051/bioconf/202517102010