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Article | REF: BE8560 V2

Biogas purification - Eliminating VOCs and siloxanes

Authors: Benoît BOULINGUIEZ, Pierre LE CLOIREC

Publication date: December 10, 2025 | Lire en français

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    3. Unit processes for biogas purification

    The issues raised and defined during the recovery of biogas require consideration of various interdependent aspects:

    • the chemical composition of biogas;

    • the concentration level of each species;

    • the unit treatment processes used;

    • the targeted applications.

    These technical difficulties are easier to understand and control if they are broken down according to the chemical nature of the compounds for the purposes of unit processing. The purpose of this section is to present the main unit processes that can make up a biogas treatment system; a concise description of their efficiency on the target compound(s) is provided, but mainly their impact on VOCs and siloxanes. The processes are discussed according to their...

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