| Autor: |
Pascal Otto, Mozhdeh Alipoursarbani, Daniel Torrent, Adriel Latorre-Pérez, Thomas Paust, Alfred Albert, Christian Abendroth |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Fermentation; Volume 9; Issue 5; Pages: 471 |
| ISSN: |
2311-5637 |
| DOI: |
10.3390/fermentation9050471 |
| Popis: |
A demonstrator plant of a recently patented process for improved sludge degradation has been implemented on a municipal scale. In a 1500 m3 sewage sludge digester, an intermediary stage with aerobic sewage sludge reactivation was implemented. This oxic activation increased the biogas yield by up to 55% with a 25% reduction of the remaining fermentation residue volume. Furthermore, this process allowed an NH4-N removal of over 90%. Additionally, 16S rRNA gene amplicon high-throughput sequencing of the reactivated digestate showed a reduced number of methane-forming archaea compared to the main digester. Multiple ammonium-oxidizing bacteria were detected. This includes multiple genera belonging to the family Chitinophagaceae (the highest values reached 18.8% of the DNA sequences) as well as a small amount of the genus Candidatus nitrosoglobus ( |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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