Green Catalysts for Sustainable Biodiesel Production from Waste Cooking OilAman Mittal, Gaurav Singh Negi, Preetjot Singh, Savinder Kaur, Dayawati and A. Vinay KumarE3S Web Conf., 511 (2024) 01019DOI: https://doi.org/10.1051/e3sconf/202451101019