Zurryati, Zurryati and Sundari, Rita and Bahrizal, Bahrizal and Putra, Ananda and Latisma DJ, Latisma DJ and Nasra, Edi and Kurniawati, Desy and Nizar, Umar Kalmar The Effect of Silica-Titania Catalyst Loading on the Production of Biodiesel from Palm and Waste Cooking Oil. International Journal of Scientific Research and Engineering Development (IJSRED), 2 (3). pp. 96-101. ISSN 2581-7175