Biomethane is a type of renewable natural gas (RNG) produced from organic materials such as agricultural waste, food waste, and wastewater. It is produced through a process called anaerobic digestion, which involves breaking down organic matter in the absence of oxygen to produce biogas, which is then purified and upgraded to biomethane.
Biomethane can be used as a substitute for natural gas in the energy system, which can help to reduce carbon emissions by replacing fossil fuels with a renewable source of energy. In addition, producing biomethane from organic waste can help to reduce methane emissions from the decomposition of organic waste in landfills, which is a potent greenhouse gas.
Biomethane can also be used as a fuel for transportation, either as compressed natural gas (CNG) or liquefied natural gas (LNG) in vehicles. Using biomethane as a transportation fuel can help to reduce emissions from the transportation sector, which is a significant contributor to greenhouse gas emissions.
By producing and using biomethane, countries can reduce their greenhouse gas emissions and contribute to achieving NetZero or carbon neutrality.
There are several large global biomethane projects that are being developed or have already been implemented:
By traditional fuels with biomethane, emissions of greenhouse gases such as carbon dioxide and methane can be significantly reduced. The process of producing biomethane from organic waste can help to reduce methane emissions from the decomposition of waste in landfills.
- Supporting circular economy: Biomethane is often produced from organic waste materials such as agricultural waste, food waste, and wastewater. By using these waste materials to produce energy, a circular economy can be created, where waste is transformed into a valuable resource.
- Improving air quality: When used as a transportation fuel, biomethane can significantly reduce emissions of harmful pollutants such as nitrogen oxides (NOx), particulate matter (PM), and sulfur dioxide (SO2), which can have negative impacts on human health and the environment.
- Creating local jobs: The production of biomethane can create local jobs in the agriculture, waste management, and energy sectors, supporting local economies.
Overall, biomethane can provide a renewable source of energy, reduce greenhouse gas emissions, support a circular economy, and improve air quality.