"Harnessing the methane that is produced in septic systems holds great untapped potential."
https://homesteady.com/how-8642626-capture-gas-septic-system-energy.html
"Biogas systems use bacteria to break down wet organic matter like animal dung, human sewage or food waste. This produces biogas, which is a mixture of methane and carbon dioxide, and also a semi-solid residue.
The biogas is used as a fuel for cooking, lighting or generating electricity. Using biogas can save the labour of gathering and using wood for cooking, minimise harmful smoke in homes, and cut deforestation and greenhouse gas emissions"
https://inspectapedia.com/heat/BioGas_Production.php
"Sewage treatment plants clean our water and produce methane gas. Methane harms our climate as a potent greenhouse gas. We can trap this methane and use it for energy. This method helps the environment in two ways. It prevents methane from entering the atmosphere. It also creates renewable energy. More sewage treatment plants throughout the world now catch methane. This turns waste into a resource."
https://www.commercialroplant.com/how-sewage-treatment-plant-capture-methane/
"A method and apparatus for the production of a methane rich biogas from a septic tank for the purposes of electricity production involves the modification of conventional septic tank designs and the supplementation of genetically modified methanogenic bacteria. Biogas produced from modified or newly installed septic systems is collected and stored for electricity generation in external gas powered generators"
https://patents.google.com/patent/CA2837311A1/en
HOMESTEAD HACKS - Using Septic Methane For Reusable Energy
Tiny House Methane Microdigester Guide: Low-Footprint Biogas
