Biogas released from decomposing organic matter is about 60% methane, making it a valuable renewable source of natural gas. But carbon dioxide, which makes up the other 40%, must be removed before the ...

Biogas made from dairy and pig manure has long been an energy source non grata for environmental groups across the country.

Small-scale biogas potentially offers many benefits for farmers well beyond energy generation, yet there are concerns that lack of government support or clear policy direction is continuing to hold ...

While biogas — energy produced mostly from crops or animal manure — has long been promoted as part of the European Union’s (EU) energy transition, it now receives renewed attention as a tool to ...