[Madiha]

Around 40% of biogas is CO2 which can be separated and sold as a product in biogas plants. Even though CO2 is non-flammable and non-toxic, it is a colourless, odourless gas that can displace oxygen in confined spaces, leading to asphyxiation. Monitoring oxygen (O₂) levels in confined areas where personnel can enter is important to minimize the risk.
Continuous monitoring of gas levels, including methane (CH₄), carbon dioxide (CO₂), and hydrogen sulfide (H₂S), is critical. Moreover, exposure to hydrogen sulfide, even at concentrations as low as a few hundred ppm, can cause severe damage. The presence of early detection monitoring systems and emergency response plans enables prompt action to prevent hazards such as explosions or exposure to toxic gases and minimize the associated risks.