This study aims to highlight the necessity of sustainability in the field of recycling solid and liquid waste, such as damaged fruits and their peels (bananas, apples, oranges) as well as used oils. These waste samples were chosen due to the high production of such waste primarily from households' food leftovers, as well as from restaurants and juice production companies. This poses a significant risk to the environment and humanity, leading to environmental pollution and the emission of greenhouse gases. Therefore, there is a critical need for the safe disposal of this waste through recycling. The waste was recycled and utilized in the production of biofuel and biodiesel, both of which are clean, renewable energy sources that do not harm the environment, thereby achieving the concept of sustainability. The experiment's results indicated the emission of biofuel, which consists mainly of methane gas. Additionally, the biodiesel was identified through tests of its density and ignition.