The green mustard residues can be converted into biogas through anaerobic digestion. In this study, different dilution volumes (1 L, 1.5 L, 2 L) were observed to determine the effect of dilution volumes on biogas yield. Three kinetic models (first-order, Fitzhugh, modified Gompertz model) were used to simulate the methane potential, kinetic constants, and lag phase time. The experiment was carried out in 5 L digesters at room temperature. The results showed that modified Gompertz is the best model for simulating the AD process. Dilution volume affected biogas production (p<0.05) with the highest biogas yield of 4372.58 mL/gVS (dilution volume of 2 L). The statistical analysis showed a significant correlation between the COD total, different dilution volumes and theoretical methane potential (p<0.05).