Abstract: The invention relates to a method for reducing the emission of methane, and possible other carbonaceous gasses being produced during processing of feed in the bowel of livestock, into the atmosphere. The method comprises feeding the livestock with feed comprising solid carbonaceous matter, the livestock digesting the feed, methane and possible other carbonaceous gasses being encapsulated within the structure of said carbonaceous matter, the livestock moving bowels with faeces, the methane and possible other carbonaceous gasses being encapsulated in the voids of the solid carbonaceous matter also after the livestock have made bowels with the faeces. The invention further relates to an animal feed composition comprising solid carbonaceous matter having voids within the structure of the matter, and to a method and an apparatus for producing such animal feed composition.

Abstract: The invention relates to a method and an apparatus for absorbing methane gas or other carbonaceous volatile gasses. The method comprises loading of solid carbonaceous matter into a vessel and loading the gas to be absorbed into the vessel. The gas is preferably formed from excrements of livestock, mainly being formed from a liquid or slurry phase of excrements of livestock. The solid carbonaceous matter is preferably formed by heating of plant material in a pyrolytic process thereby forming carbonaceous matter having a solid structure.