Article | REF: BE8560 V1

Biogas purification - Eliminating VOCs and siloxanes

Authors: Benoît BOULINGUIEZ, Pierre LE CLOIREC

Publication date: October 10, 2011

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1. Biogas – Background

1.1 Definition

Biogas is produced by the anaerobic digestion of an organic substrate (household or industrial waste, water treatment sludge, agricultural products).

The latter, made up of proteins, lipids and carbohydrates, is broken down by a biological process segmented into four chain reaction stages:

  • hydrolysis;

  • acidogenesis;

  • acetogenesis;

  • methanogenesis.

Methane production takes place during the final stage. Each of these involves different microbial populations, acting symbiotically within a bacterial consortium

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Biogas – Background
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