Fig. 9From: Modeling of methane formation in gravity sewer system: the impact of microorganism and hydraulic conditionMethane production vs wall-shear stress, COD = 400 mg/L. The relationship between the methane production and wall-shear stress. The R2 value of Eq. (5) was 0.95, indicating that the Eq. (5) was also reasonableBack to article page