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Comparison of Specific Anammox Activity and Nitrous Oxide Production of Enriched Anammox Cultures in Suspended-and Attached-Growth Systems |
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| รหัสดีโอไอ | |
| Creator | Pongsak (Lek) Noophan |
| Title | Comparison of Specific Anammox Activity and Nitrous Oxide Production of Enriched Anammox Cultures in Suspended-and Attached-Growth Systems |
| Contributor | Supaporn Phanwilai, Pensiri Prachakittikul |
| Publisher | Environmental Engineering Association of Thailand |
| Publication Year | 2564 |
| Journal Title | Thai Environmental Engineering Journal (TEEJ) |
| Journal Vol. | 35 |
| Journal No. | 2 |
| Page no. | 47-54 |
| Keyword | Suspended Growth, Attached-Growth, Anammox |
| URL Website | https://so05.tci-thaijo.org/index.php/teej |
| Website title | Thai Environmental Engineering Journal (TEEJ) |
| ISSN | 2673-0359 |
| Abstract | Anaerobic ammonia oxidizing (anammox) bacteria are able to remove nitrogen in both attached-and suspended-growth systems. Attached-growth or biofilm systems are better able to handle high nitrogen loading (total nitrogen concentrations (NH4+-Nplus NO2---N) up to 80.5 mM) than suspended-growth systems. High nitrogen concentrations (along with constant concentrations of minor nutrients and trace elements) were fed to enriched anammox cultures in suspended-and attached-growth systems, contained in sequencing batch reactors (SBRs). For attached-growth a polystyrene sponge was used as the growth medium. The specific anammox activity (SAA) with attached-growth systems was higher than the SAA for suspended-growth systems. Nitrous oxide(N2O)production was significantly greater in both reactors at pH 6.8 than at pH 7.3, 7.8, and 8.3.N2Oproduction from both reactors was significantly higher at an NH4+:NO2-ratio of 0.5:1 than at ratios of 0.75:1, 1:1, and 1:1.3. However, N2O production from the attached-growth system was slightly lower than N2O production from the suspended-growth system. The results from this research suggest that attached-growth reactors could provide operational advantages over suspended-growth reactors in field applications. |
