Abstract

This study's purpose is to create biogas by co-digesting cow manure as a substrate with banana peels and sugarcane bagasse. With this, the researchers compare two mixtures-one with CW and one without-to determine which mixture has a better performance in producing biogas and which is more electrically conductive. M1 consisted of 0% CW, 50% BP, and 50% SB, and M2 consisted of 50% CW, 25% BP, and 25% SB. The study measured biogas volume using water displacement, pH levels with a pH meter, and conductivity with a bulb. It used a one-way ANOVA (Welch) for volume and an unpaired t-test for pH comparison between M1 and M2. The results showed that the mixtures can both produce biogas (p = 0.974), but the average of both mixtures' pH levels was not significantly different from each other. Furthermore, when both volumes were measured, they were not significantly different (p = 0.132). M1 was produced on Day 4 at 0.08 mL and peaked at 10.5 mL on Day 6, while M2 was produced on Day 3 at 0.05 mL and peaked at 20.5 mL on Day 7, showing a higher biogas yield in M2 at 20.5 mL. pH affected production later due to acidification. Both produced electricity; M2's higher conductivity made it more efficient.