Optimizing Biodiesel Production from Hazelnut kernel oil and waste cooking oil with CaO catalyst Using RSM ApproachBalaji Selvaraj, J. Venkatesh, J. Ramesh Babu, V. Senthil Murugan, LSP. Subbu, Yashwant Singh Bisht and Anoop Kumar SinghE3S Web Conf., 588 (2024) 01011DOI: https://doi.org/10.1051/e3sconf/202458801011