Where do biogas and biomethane come from? Here’s an overview of the process for converting biogas into renewable natural gas:
- Waste products, such as wastewater, food waste and manure are processed in a biodigester.
- The biodigester breaks down the organic material through an anaerobic process, creating biogas — a mixture of methane, carbon dioxide (CO2), and other gas constituents.
- Biogas is then conditioned and upgraded to remove the CO2 and other gas constituents, leaving a high concentration of methane. This produces renewable natural gas, or RNG, which can be used interchangeably with traditional natural gas. Learn more about pipeline gas quality requirements here.
- RNG can be used where it is produced for purposes such as generating electricity or fueling vehicles, or it can be injected into the utility pipeline and transported to an end user.
Point Loma Wastewater Treatment Plant
See how Point Loma Wastewater Treatment Plant successfully uses wastewater digester gas to produce biogas.
For more information on converting biogas into renewable natural gas, please contact [email protected].
The information contained herein is made available solely for informational purposes. Although SoCalGas® has used reasonable efforts to assure the accuracy of the information at the time of its inclusion, no express or implied representation is made that it is free from error or suitable for any particular use or purpose. SoCalGas assumes no responsibility for any use thereof by you, and you should discuss decisions related to this subject with your own advisors and experts.