Method and apparatus for biological production of electro-methane

A method of converting carbon monooxide and/or carbon dioxide and hydrogen in a gas to methane, comprising:

• a) providing a gas comprising carbon monoxide and/or carbon dioxide;
• b) providing a gas comprising hydrogen;
• c) leading the gas comprising carbon monooxide and/or carbon dioxide and the gas comprising hydrogen to a reactor, wherein the reactor comprises a packaging material selected from the group consisting of polyethylene (PE), polypropylene (PP), polystyrene (PS) and acrylonitrile butadiene styrene (ABS) and the reactor comprises microorganisms capable of converting carbon monooxide and/or carbon dioxide and hydrogen to methane, and wherein the packaging material is capable of being detached from the reactor;
• d) providing a liquid and supply the liquid to the reactor above the packaging material;
• e) leading the gas comprising carbon monooxide and/or carbon dioxide and the gas comprising hydrogen through the packaging material comprising the liquid and microorganisms to convert carbon monoxide and/or carbon dioxide and hydrogen to methane and water;
• f) leading the gas where carbon monooxide and/or carbon dioxide and hydrogen is converted to methane to an outlet, and
• g) cleaning and decompression of the packaging material by filling the reactor with liquid and blowing pressurized air into the reactor below the packaging material.