The International Energy Agency (IEA) Bioenergy Task Force has published an updated brochure on Biogas upgrading technologies – developments and innovations. Biogasmax says IEA Bioenergy aims to accelerate the use of environmental sound and cost-competitive Bioenergy on a sustainable basis, and thereby achieve a substantial contribution to future energy demands.
In the report upgrading of biogas or landfill gas is defined as removal of carbon dioxide from the gas. Upgrading results in an increased energy density since the concentration of methane is increased. Several technologies for biogas upgrading are commercially available and others are at the pilot or demonstration plant level.
In the brochure, available here, some of the available technologies are described and reviewed in terms of recent developments.
Biogas can be produced during anaerobic digestion of organic substrates, such as manure, sewage sludge, the organic fractions of household and industry waste, and energy crops. It is produced in large scale digesters found preliminary in industrial countries, as well as in small scale digesters found worldwide. Biogas is also produced during anaerobic degradation in landfills and is then referred to as landfill gas.
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