Methane
61.5
% CH₄
Optimal range: 55–70%
System Overview
This dashboard displays real-time monitoring data for biogas quality and digester conditions, including methane, carbon dioxide, hydrogen sulphide, temperature, pH and gas pressure.
Purpose: To support real-time monitoring and evaluation of small-scale biogas systems using Internet of Things technology.
Device Information
- Device ID
- RUA-Biogas-01
- Status
- Online
- Last Update
- —
- Wi-Fi Signal
- -62 dBm
- Location
- FABE Laboratory
- Power Supply
- Solar / 12 V
Device & Facility
Photos of the sensor unit and the BTIC biogas digester at FABE Laboratory. Drop your own site photos into the images/ folder using the filenames below to replace these placeholders.
images/device-sensor-unit.jpg
images/digester-setup.jpg
images/btic-lab.jpg
Live Sensor Dashboard
Carbon Dioxide
37.8
% CO₂
Optimal range: 30–45%
Hydrogen Sulphide
145
ppm H₂S
Optimal range: < 150 ppm
Temperature
35.2
°C
Optimal range: 30–38 °C
pH Level
7.10
pH
Optimal range: 6.8–7.3
Gas Pressure
2.40
kPa
Optimal range: 1.5–3.5 kPa
Gas Composition Trend
Temperature & pH Trend
Reading History
Browse previously recorded sensor readings from this device. Use the filter to narrow the time range, or export the table as a CSV file.
| Timestamp | Methane (%) | CO₂ (%) | H₂S (ppm) | Temp (°C) | pH | Pressure (kPa) | Status |
|---|
What Is Biogas?
Biogas is a renewable fuel produced when organic matter — such as animal manure, food waste, or crop residue — breaks down in the absence of oxygen. It is mainly composed of methane (CH₄) and carbon dioxide (CO₂), with smaller amounts of hydrogen sulphide (H₂S), water vapour, and other trace gases.
How Anaerobic Digestion Works
- 1. Hydrolysis Complex organic matter (carbohydrates, proteins, fats) is broken down into simpler sugars, amino acids, and fatty acids.
- 2. Acidogenesis These simpler compounds are fermented into volatile fatty acids, alcohols, carbon dioxide, and hydrogen.
- 3. Acetogenesis Volatile fatty acids are converted into acetic acid, along with additional carbon dioxide and hydrogen.
- 4. Methanogenesis Methanogenic microorganisms convert acetic acid, hydrogen, and carbon dioxide into methane — the main fuel component of biogas.
Why Biogas Matters
- Provides renewable energy for cooking, lighting, and electricity generation.
- Reduces dependence on firewood and charcoal, helping to slow deforestation.
- Captures methane that would otherwise escape into the atmosphere from untreated manure, reducing greenhouse gas emissions.
- Produces nutrient-rich digestate that can be used as organic fertilizer.
- Helps farms and households manage livestock and agricultural waste safely.
- Supports rural energy independence, an important goal for Cambodia's agriculture sector.
Common Feedstocks
Small-scale digesters like RUA-Biogas-01 are commonly fed with cattle or pig manure, poultry litter, food waste, and crop residues. Mixing feedstocks and maintaining a steady feeding schedule generally produces more stable gas output.
Safety Tips
- Biogas is flammable — keep it away from open flames, sparks, and smoking areas.
- Hydrogen sulphide (H₂S) is toxic at high concentrations — ensure good ventilation when working near the digester or gas storage.
- Check fittings and storage bags regularly for leaks, especially after maintenance.
- Never enter an enclosed digester chamber without ventilating it first — gas can displace breathable oxygen.
About This Dashboard
This dashboard helps researchers and students at FABE Laboratory monitor the quality and safety of a small-scale biogas digester in real time. The sections below explain what each sensor measures and what the status colors mean.
Sensor Glossary
- Methane
- The primary combustible component of biogas. Higher methane content means better fuel quality.
- Carbon Dioxide
- The second-largest component of biogas. Higher CO₂ lowers the fuel's calorific value.
- Hydrogen Sulphide
- A corrosive trace gas. Elevated levels can damage engines and pose a safety risk.
- Temperature
- Digester temperature affects how actively bacteria break down organic matter.
- pH Level
- Indicates how acidic or alkaline the digester is. A stable pH supports healthy digestion.
- Gas Pressure
- The pressure of gas inside the storage system, relevant to safe delivery to end use.
Status Legend
- NormalReading is within the healthy operating range for this parameter.
- WarningReading is outside the normal range and should be monitored closely.
- CriticalReading is far outside the safe range — immediate attention is recommended.
Project Credits
This system was developed at the FABE Laboratory, Royal University of Agriculture, in collaboration with the Biogas Technology and Innovation Center (BTIC). Device RUA-Biogas-01 monitors a small-scale biogas digester powered by solar / 12V supply.