Mesophilic CSTR Anaerobic Digester
Provides a 200-liter stainless steel jacketed anaerobic vessel with variable-speed paddle mixer.
Agricultural Engineering / Anaerobic Biogas Production
FREE TO EXPLORELABORATORY 35 · AGRICULTURAL ENGINEERING
Anaerobic Digester Biogas Yield & Mesophilic Methane Kinetics
Measure specific biogas yield and methane generation kinetics from dairy manure slurry in a continuously stirred mesophilic anaerobic digester as a function of volatile solids loading. Explore interactive farm machinery simulation, irrigation hydraulics, and agricultural engineering telemetry.
FARM MACHINERY · SOIL & WATER · POST-HARVEST · STRUCTURES
Your virtual agricultural engineering laboratory.
CUMULATIVE BIOGAS PRODUCTION V_G—
FIELD & TEST CELL TELEMETRY
Ready to sample with Solids VS = 3.0 kg.
Adjust Solids VS, then execute agricultural trial.
Agricultural engineering telemetry and biosystems states are evaluated rigorously using 64-bit IEEE 754 precision. Residuals reflect ordinary least-squares regression across successive observations. Continuous data structures support high-fidelity agricultural and environmental modeling.
Agricultural assumptions and boundary condition limits
The linear yield model applies under stable organic loading without substrate shock or VFA souring. Evaluated in a 200-liter continuously stirred mesophilic anaerobic digester operating at 37.0 ± 0.5 °C with dairy manure slurry (total solids 8.5%, volatile solids fraction 82.0% of TS). Methane fraction averages 60.5% by volume with pH maintained at 7.2 to 7.4.
Agricultural apparatus & field instrumentation sensors.
Circulating Water Jacket Thermostat
Maintains constant slurry temperature at 37.0 °C with digital PID temperature controller.
Wet-Tip Precision Gas Meter
Measures continuous cumulative biogas production with 100 mL volumetric tip resolution.
Dual-Beam NDIR Biogas Composition Analyzer
Monitors continuous volumetric concentrations of CH4 (0-100%) and CO2 (0-100%) and H2S ppm.
Industrial In-Line pH and ORP Probe
Tracks digester slurry pH and oxidation-reduction potential (-350 mV) to verify healthy methanogenic state.
Analytical Muffle Furnace & Desiccator
Determines total solids (TS at 105 °C) and volatile solids (VS ash burn at 550 °C) of feed manure.
FOLLOW THE METHOD
A reason behind every step.
Measure specific biogas yield and methane generation kinetics from dairy manure slurry in a continuously stirred mesophilic anaerobic digester as a function of volatile solids loading. Standardized parameter settings: 1.0, 2.0, 3.0, 4.0, 5.0, 6.0 kg.
01
Substrate Characterization and Inoculum Stabilization
Analyze dairy manure slurry total solids (TS) and volatile solids (VS); verify active digester inoculum with stable pH (7.3) and low VFA baseline.
02
Incremental VS Feed Batching
Prepare standardized manure feed batches corresponding to volatile solids additions of 1.0, 2.0, 3.0, 4.0, 5.0, and 6.0 kg-VS.
03
Anaerobic Feeding and Purge
Inject the initial feed batch into the digester through the sub-surface feed port without introducing atmospheric oxygen.
04
Gas Production Monitoring
Record daily and cumulative biogas volume produced over the active degradation cycle using the wet-tip volumetric flow meter.
05
Gas Composition and Quality Analysis
Sample biogas composition daily using the NDIR analyzer to verify steady methane concentration (58% to 62% CH4).
06
Yield Calculation and Kinetic Plotting
Normalize gas volume to standard temperature and pressure (STP: 0 °C, 1 atm) and plot V_g against loaded VS to extract specific yield Y_vs.
YOUR NOTEBOOK · 0 OBSERVATIONS
Turn measurements into agricultural engineering insight.
Points are your recorded observations. The solid regression line validates Anaerobic Biogas Production mathematical scaling.
LINEAR REGRESSION FIT · y = mx + b
V_g = Y_vs · VS = 0.4200 · VS
| # | Volatile Solids Loaded VS (kg) | Cumulative Biogas Production V_g (m³) | Volatile solids VS (kg) | Cumulative biogas V_g (m³) | Remove |
|---|
No readings yet. Execute an agricultural trial and record it.
Calculate it yourself.
CHECK YOUR UNDERSTANDING