A mixture of methane (CH4) and carbon dioxide (CO2) produced by anaerobic digestion, with small amounts of other gases. The methane is a flammable gas, chemically identical to the main constituent of natural gas, and can be used as a fuel for heat and/or electricity generation. Biogas is effectively the same as landfill gas, which is produced by the anaerobic decomposition of organic material in landfill sites.

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The company behind a biomass energy facility near Hull, England has gone into administration, though a successful sale of its land and equipment has safeguarded jobs and maximised returns for creditors
The plant will convert agro-industrial waste into high-quality biomethane. The facility will recover residues from the AZPO – Azeites de Portugal olive oil plant
The upturn is being driven in part by growing access to Bio-LNG, a renewable form of biogas that enables up to 100% CO₂ reductions compared to conventional diesel
