Simple Experiment: Identifying Fruit and Vegetable Waste with the Fastest Biogas Production Rate Under Anaerobic Conditions

This study aims to identify the types of fruit and vegetable waste that produce biogas most quickly under anaerobic conditions. The method used is anaerobic fermentation on various combinations of organic waste with and without added sugar, for 12 days. A total of 11 groups tested waste combinations such as papaya, apple, jackfruit, dragon fruit, pear, cucumber, and spinach, with four types of POC code treatments: A1 (fruit without sugar), A2 (fruit + sugar), B1 (vegetables without sugar), and B2 (vegetables + sugar). The results showed that treatment with code A2 (fruit waste + sugar) provided the fastest biogas production rate and resulted in an explosion in the reactor, indicating high methane gas pressure. The most reactive types of fruit waste in producing biogas were jackfruit and dragon fruit, while from the vegetable category, spinach in treatments B1 and B2 also showed a significant response. This study concluded that the combination of fruit waste + sugar (A2) and vegetable waste + sugar (B2) can accelerate methane gas formation and is very potential for household-scale biogas production.