The Anaerobic Digestion Process

Biogas Process Information:
Types of Anaerobic Digesters
Process of Anaerobic Digestion
Process of Biogas Production
Sources of Biogas Energy

Anaerobic digestion is a key step in the chemical breakdown of waste matter to produce clean usable biogas. The chemical reactions involved in this digestion can be broken down into several stages.

The first stage is hydrolysis. During hydrolysis, or liquefaction, fermentative and hydrolytic bacteria break down fat, protein, and carbohydrate in the bio-waste info alcohol, carbon dioxide, ammonia, hydrogen, sulfides, and fatty acids.

Anaerobic Digestion Process and Cycle. Disintegration of Gas Lacking Oxygen. Loss of Unrestricted Oxygen Creating Biogas.

The next stage involves acid formation by acetogenic bacteria. The acetogenic acid further digests the biomass from hydrolysis to form carbon dioxide, hydrogen, and acetic acid. Methanogenic bacteria, “methane-forming”, bacteria then reacts with the material to create biogas.

A Typical Covered Lagoon Digester.


SA Series
Packaged Chillers
(integrated pump tank)
1.5Ton – 20Ton
Single / Dual Circuits
Single / Dual Pumps
SAE Series
Modular Chillers
(pump & tank on
separate skid)
1.5Ton – 200Ton
Single / Dual Circuits
SAR Series
Split Chillers
(Outdoor Condensing Unit)
(pump, tank, evaporator on
indoor skid)
1.5Ton – 200Ton
Single / Dual Circuits