Impact of monoterpenes in the stability of the anaerobic digestion of Mediterranean Wholesale Market Waste
| Autor: | Ángeles Trujillo-Reyes, Antonio Serrano, Ana G. Pérez, Miriam Peces, Fernando G. Fermoso |
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| Přispěvatelé: | European Commission, Ministerio de Ciencia e Innovación (España) |
| Jazyk: | angličtina |
| Rok vydání: | 2023 |
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| Popis: | 11 Páginas.-- 5 Figuras.-- 3 Tablas.-- Material suplementario The stability and robustness of long-term anaerobic digestion process of fruit and vegetable waste (FVW) generated in Mediterranean wholesale markets were assessed, monitoring potential inhibitory volatile organic compounds (VOCs) such as volatile fatty acids (VFAs) and/or monoterpenes. Particle size (4 and 10 mm) and organic loading rate (OLR) were evaluated during the experimentation. Anaerobic digestion remained stable at OLR of 1.0 g VS L−1 d−1 (VS, total volatile solids) regardless of the feedstock particle size. At this OLR, methane yield was 254 ± 8 and 229 ± 11 mL CH4 g VS−1 for 4 and 10 mm, respectively. As the OLR increased above 1.0 g VS L−1 d−1, the system rapidly destabilized, and a high accumulation of VFAs was observed. In parallel of to the VFAs accumulation, other VOCs such as fenchone also reached concentrations that contributes to the destabilisation of the process. The destabilization process at an OLR of 3.0 g VS L−1 d−1 also resulted in a drastic reduction in the relative abundance and species diversity of methanogenic archaea in all digesters. This work was funded by the project entitled “Employing circular economy approach for OFMSW management within the Mediterranean countries – CEOMED” number A_B.4.2_0058, funded under the ENI CBC MED 2014 – 2020 programme. The authors are also very grateful to the Spanish Ministry of Science and Innovation for funding this research through the project PID2020-116698RB-I00. Funding for open access charge: Universidad de Granada / CBUA. |
| Databáze: | OpenAIRE |
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