Optimization of recirculation ratio for biohythane production by two-phase anaerobic co-digestion of high-solid food waste and paper waste
Rattachement africain : jp, cn. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
The recirculated two-phase anaerobic digestion ( R -TPAD) system has gradually replaced the conventional TPAD configuration, emerging as a stable and efficient strategy for biohythane production. However, inappropriate recirculation ratios ( R ) may cause either incomplete organic conversion or insufficient phase separation. In this study, a semi-continuous R -TPAD system comprising two continuously stirred reactors was established to digest food and paper waste (total solids ≈ 17 %). The influence of R on process performance, microbial structures, metabolic pathways, and energy recovery was systematically assessed. Results showed that the buffering effect of recycled methanogenic sludge maintained the pH of acidogenic phase at 5.2 and ensured complete phase separation at R 0.8 , achieving optimal yields of H 2 (75 L/kg-VS) and CH 4 (402 L/kg-VS) with 83 % COD removal. Stoichiometric and thermodynamic analyses confirmed that R 0.8 strengthened metabolic coupling between the acidogenic and methanogenic phases, thereby promoting methane harvest. 16S rRNA analysis indicated that the appropriate ratio could push forward the cooperation between functional guilds by stimulating acidogens in acidogenic phase and enriching methanogens in methanogenic phase. Energy balance analysis indicated that R 0.8 would deliver superior net energy recovery. These findings provide a practical operational basis for scaling up R -TPAD technology.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Optimization of recirculation ratio for biohythane production by two-phase anaerobic co-digestion of high-solid food waste and paper waste
- Date Crossref
- 01/02/2026
- Éditeur
- Elsevier BV
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Tohoku University pays non établi dans la noticeUniversité ou école supérieure
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University of Science and Technology Beijing pays non établi dans la noticeUniversité ou école supérieure
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Graduate School of Engineering Department of Civil and Environmental Engineering pays non établi dans la noticeUniversité ou école supérieure
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Graduate School of Environmental Science Department of Frontier Science for Advanced Environment pays non établi dans la noticeUniversité ou école supérieure
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School of Energy and Environmental Engineering Department of Environmental Engineering pays non établi dans la noticeUniversité ou école supérieure
Tohoku University, University of Science and Technology Beijing et Department of Civil and Environmental Engineering — Graduate School of Engineering, avec 2 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.