Experimental dataset for methane production from anaerobic digestion of cattle manure in a 180 L pilot-scale CSTR with six impeller geometries

Experimental methane production data from anaerobic digestion of cattle manure in a 180 L pilot-scale CSTR. Six impeller geometries (N=3,4,6 and θ=30°,45°) tested at 0, 40, 80, and 120 rpm over 17 days. Total: 409 data points. Variables: t (day), n (rpm), N, θ (°), MP (L/day). Optimal yield: 82.3 L/day at 80 rpm with 6-blade, 45° impeller. Data used for geometry-informed XGBoost modeling. CC BY 4.0.