Landfill
Disposing of waste in a landfill involves burying the waste, and this remains a common practice in most countries. With the enviornmental awareness, the modern landfill facilities are equipped with biogas entrapment for energy productio. Landfill biogas is produced by wet organic waste decomposing under anaerobic conditions in a landfill. The waste is covered and mechanically compressed by the weight of the material that is deposited from above. This material prevents oxygen exposure thus allowing anaerobic microbes to thrive. This gas builds up and is slowly released which can be captured as be put in good use as fuel.
Biogas can be utilized for electricity production on sewage works in a CHP gas engine, where the waste heat from the engine is conveniently used for heating the digester; cooking; space heating; water heating; and process heating.
Plantic products unlike petrochemical based plastics and like organic waste decompoes in landfill and generate biogas. This is another benefit over conventional plastics which does not undergo decomposition in landfill creating solid waste and staying around as waste for millions of years.