Rapid start-up of the anammox process by denitrifying granular sludge and the mechanism of the anammox electron transport chain
| Autor: | Yuanyuan Song, Yunman Liu, Jianbo Guo, Sihui Wang, Huu Hao Ngo, Wenshan Guo, Jing Lian |
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| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Environmental Engineering biology Chemistry Anaerobic ammonium oxidation Biomedical Engineering Environmental engineering Bioengineering 010501 environmental sciences biology.organism_classification Start up 01 natural sciences Electron transport chain 03 medical and health sciences Denitrifying bacteria 030104 developmental biology Chemical engineering Anammox Scientific method Total nitrogen Bacteria 0105 earth and related environmental sciences Biotechnology |
| Zdroj: | Biochemical Engineering Journal. 115:101-107 |
| ISSN: | 1369-703X |
| Popis: | This study investigated the rapid start-up of an anaerobic ammonium oxidation (anammox) reactor by inoculating denitrifying granular sludge mixed anammox bacteria. The mechanism of the anammox electron transport chain (AETC) was also studied using nine different inhibitors in batch tests. This is the first study that shortened the start-up anammox reactor time to 28 days. Nitrogen removal rates (NRRs) up to 0.72 kg/(m3 d) on day 28 were achieved. Each studied inhibitor had a different binding site in the AETC. The effect of each inhibitor was determined by comparing the total nitrogen removal efficiency between the presence of an inhibitor and an appropriate control. The results confirmed that each inhibitor had various inhibition degrees that distinctly affected the AETC. Finally, the AETC mechanism was explored in detail. These findings are important for developing fast start-up processes for anammox reactors. |
| Databáze: | OpenAIRE |
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