‘biomethane’ means a renewable natural gas made from organic sources that starts out as ‘biogas’ but then is cleaned up in a process called ‘biogas to biomethane’ which removes the impurities in biogas such as carbon dioxide, siloxanes and hydrogen sulphides (H2S);
ciallaíonn “bithmheatán” gás nádúrtha in-athnuaite atá déanta as foinsí orgánacha ar “bithghás” a bhíonn ar dtús ann ach a dhéantar a ghlanadh ansin i bpróiseas ar a dtugtar “bithghás go bithmheatán” lena mbaintear as na heisíontais sa bhithghás, amhail dé-ocsaíd charbóin, silea-ocsáin agus sulfaídí hidrigine (H2S);