Sintesis Biodiesel Dari Minyak Goreng Bekas Menggunakan Katalis Cao Dari Cang…

The gonggong snail is widely consumed as a part of culinary tour that currently in demand by tourists. As a result, the waste of gonggong snail shells increases. Therefore, to reduce its waste, the gonggong snail is used as a heterogeneous catalyst in making biodiesel using used cooking oil as raw material. The gonggong snail shells were calcined at 900 °C for 10 hours. The catalyst was impreg…