5. Conclusions and outlook

Valorizing the CO ₂ produced by biogas from anaerobic digestion is interesting for several reasons. It makes it possible to valorize a co-product, strengthen the methanization's budget balance and improve the unit's overall environmental balance.

The choice of recovery route may be based on several criteria, such as [G 1 814] :

• the degree of technological advancement, which, depending on economic profitability, may or may not make production and valorization possible;

• ...