| Autor: |
Ander Castro-Fernandez, Anton Taboada-Santos, Sabela Balboa, Juan M. Lema |
| Přispěvatelé: |
Universidade de Santiago de Compostela. Departamento de Enxeñaría Química |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Bioresource Technology. 376:128839 |
| ISSN: |
0960-8524 |
| DOI: |
10.1016/j.biortech.2023.128839 |
| Popis: |
The study compares the potential to produce volatile fatty acids (VFA) from sewage sludge, both raw and thermally pre-treated in two modes of operation. In batch mode, raw sludge at pH 8 obtained the highest maximum VFA yield (0.41 g COD-VFA/g CODfed) whereas pre-treated sludge achieved a lower value (0.27 g COD-VFA/g CODfed). The operation of 5-L continuous reactors showed that thermal hydrolysis pre-treatment (THP) did not have any significant influence on VFA yields, averaging 15.1 % g COD-VFA/g COD with raw sludge and 16.6 % g COD-VFA/g COD with pre-treated one. Microbial community analysis showed that phylum Firmicutes was predominant in both reactors and that the enzymatic profiles involved in VFA production were very similar regardless of the substrate fed This work is part of the ECOVAL and CIGAT CIRCULAR projects, which are funded by Interreg Sudoe (SOE4/P1/E1104) and by the Xunta de Galicia and Viaqua (IN853C2022/03), respectively. Juan M. Lema belongs to the Galician competitive research group ED431C-2021/37 co-funded by Xunta de Galicia and ERDF (EU) SI |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect