Salazar-Batres, Karina J.; Durand, Audrey-Anne; Constant, Philippe 
ORCID: https://orcid.org/0000-0003-2739-2801 et Moreno-Andrade, Iván
(2025).
Biogas production from the organic fraction of municipal solid waste is enhanced by nickel addition in a two-stage system compared with a conventional digester
Biofuels
, vol. ahead
.
pp. 1-12.
DOI: 10.1080/17597269.2025.2517541.
(Sous Presse)
Résumé
The stability of conventional single-stage anaerobic digestion has limitations and requires strategies to enhance biogas production, including two-stage anaerobic digestion (TSAD) and trace metals addition (Ni2+). This research was focused on determining the effect of the supplementation of different concentrations of Ni2+ on a TSAD compared with a conventional process. In the first stage (hydrogen-producing reactor), the Ni2+ concentrations evaluated were 0, 0.1, and 0.5 mg Ni2+/gVSinoculum. The acidogenic effluents were fed in the second stage to produce CH4-rich biogas. The results showed that it was possible to increase the CH4-productivity and the specific methane production by 72% and 105%, respectively, by operating in TSAD compared with the conventional anaerobic digester. The Ni2+ addition improved the stability of the first and second stages, allowing higher biogas production. The microbial communities’ composition at the phylum level changed in each stage.
| Type de document: | Article |
|---|---|
| Mots-clés libres: | Two-stage anaerobic digestion; hydrogen-rich biogas; methane-rich biogas; trace metals; nickel; microbial communities |
| Centre: | Centre INRS-Institut Armand Frappier |
| Date de dépôt: | 07 juill. 2025 18:03 |
| Dernière modification: | 07 juill. 2025 18:03 |
| URI: | https://espace.inrs.ca/id/eprint/16562 |
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