IPPTS Anaerobic Digestion Community Website

To cut carbon emissions, reduce unnecessary energy and material use, replace fossil fuels with suitable low-carbon alternatives, prevent food waste and tackle methane escaping from organic wastes. Individuals, businesses, farmers and governments have different opportunities to act, but all can contribute.

Biogas and biomethane deserve particular attent...

Clarke Energy’s Perpignan biogas upgrading project illustrates the use of sewage-sludge biogas to supply a gas distribution network. This dated case study preserves a project milestone in the development of biomethane production in France.

Originally published on 19 January 2020. Updated on 20 October 2026 as a historical project archive. Project s...

Pyrolysis is the thermal decomposition of a material by heating it without oxygen. Applied to biomass, it produces a mixture of solid char, condensable vapours and gases. The vapours can be cooled to produce a liquid commonly called pyrolysis oil or bio-oil.

Unlike combustion, pyrolysis does not rely on burning the feedstock with oxygen inside the reac...

Activated carbon for biogas purification removes selected contaminants that can damage engines, interfere with upgrading equipment or prevent gas from meeting its intended specification. Common applications include hydrogen sulphide removal and the adsorption of siloxanes and volatile organic compounds.

However, an ordinary activated carbon filter does...

A Septic Tank, before burial below ground to serve its purpose. of wastewater treatment/ purification.

Septic tank biogas forms when microorganisms break down organic material without oxygen. That gas can contai...