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How to Make Biogas [Video]

How to make biogas

Biogas typically refers to a gas produced by the biological breakdown of organic matter in the absence of oxygen. Comprised primarily of methane and carbon dioxide, biogas originates from biogenic material and is a type of biofuel. It’s a product of the anaerobic digestion or fermentation of biodegradable materials such as manure or sewage, and can be used in CHP plants.

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Step 1:

Most biodegradable organic material can be collected and used for anaerobic digestion.

Anaerobic digestion of biodegradable materials

Step 1

Step 2:

The material is fed into a digester tank where it’s broken down by bacteria in the absence of oxygen.

Organic material into digester tank

Step 2


This produces biogas (a renewable natural gas) which is cleaned, compressed and sent to a CHP Plant.

Production of biogas

Step 3


It also produces ‘digestate’, which can be used as a compost or biofertiliser.

Produce digestate to use as compost or biofertiliser

Step 4

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Tags: biogas, How to