The Effect of Foam-Recycle on Ammonium Removal by Aerobic Denitrification Using <i>Alcaligenes faecalis</i> No. 4
Aerobic denitrifier <i>Alcaligenes faecalis</i> No. 4 removes ammonium-nitrogen to nitrogen gas via denitrification in a single aerobic condition. In our previous studies, factors such as ammonium removal rate, denitrification ratio, and cell growth were tested in various conditions. The...
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MDPI AG
2023-10-01
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| Series: | Environments |
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| Online Access: | https://www.mdpi.com/2076-3298/10/10/184 |
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| author | Kwanyong Lee Hung-Soo Joo |
| author_facet | Kwanyong Lee Hung-Soo Joo |
| author_sort | Kwanyong Lee |
| collection | DOAJ |
| description | Aerobic denitrifier <i>Alcaligenes faecalis</i> No. 4 removes ammonium-nitrogen to nitrogen gas via denitrification in a single aerobic condition. In our previous studies, factors such as ammonium removal rate, denitrification ratio, and cell growth were tested in various conditions. The removal pathway from ammonium to nitrogen gas still needs to be determined in detail. To clarify this pathway of <i>Alcaligenes faecalis</i> No. 4, we in this study investigated the effects of several factors on ammonium removal, such as foam-recycle, initial pH, initial ammonium concentration, and airflow rate. Denitrification ratio was improved by up to 23% through foam-recycle. The improvement of the denitrification ratio was resulted by the higher enzyme activity of hydroxylamine oxidoreductase (HAO) in the produced foam, which was about 28 times higher than that in the culture broth (i.e., without foam-recycle). The stripped ammonia was significantly high (above pH 9). The initial ammonium concentration and airflow rate also influenced the denitrification ratio. |
| first_indexed | 2024-03-10T21:15:48Z |
| format | Article |
| id | doaj.art-7fd16471ecf24eea93b691196dec78eb |
| institution | Directory Open Access Journal |
| issn | 2076-3298 |
| language | English |
| last_indexed | 2024-03-10T21:15:48Z |
| publishDate | 2023-10-01 |
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| record_format | Article |
| series | Environments |
| spelling | doaj.art-7fd16471ecf24eea93b691196dec78eb2023-11-19T16:25:45ZengMDPI AGEnvironments2076-32982023-10-01101018410.3390/environments10100184The Effect of Foam-Recycle on Ammonium Removal by Aerobic Denitrification Using <i>Alcaligenes faecalis</i> No. 4Kwanyong Lee0Hung-Soo Joo1Department of Bio and Environmental Health, Dongnam Health University, Suwon 16328, Republic of KoreaDepartment of Environmental Engineering, Anyang University, Anyang 14028, Republic of KoreaAerobic denitrifier <i>Alcaligenes faecalis</i> No. 4 removes ammonium-nitrogen to nitrogen gas via denitrification in a single aerobic condition. In our previous studies, factors such as ammonium removal rate, denitrification ratio, and cell growth were tested in various conditions. The removal pathway from ammonium to nitrogen gas still needs to be determined in detail. To clarify this pathway of <i>Alcaligenes faecalis</i> No. 4, we in this study investigated the effects of several factors on ammonium removal, such as foam-recycle, initial pH, initial ammonium concentration, and airflow rate. Denitrification ratio was improved by up to 23% through foam-recycle. The improvement of the denitrification ratio was resulted by the higher enzyme activity of hydroxylamine oxidoreductase (HAO) in the produced foam, which was about 28 times higher than that in the culture broth (i.e., without foam-recycle). The stripped ammonia was significantly high (above pH 9). The initial ammonium concentration and airflow rate also influenced the denitrification ratio.https://www.mdpi.com/2076-3298/10/10/184ammonium removalheterotrophic nitrificationaerobic denitrificationfoam-recyclehydroxylamine oxidoreductase |
| spellingShingle | Kwanyong Lee Hung-Soo Joo The Effect of Foam-Recycle on Ammonium Removal by Aerobic Denitrification Using <i>Alcaligenes faecalis</i> No. 4 Environments ammonium removal heterotrophic nitrification aerobic denitrification foam-recycle hydroxylamine oxidoreductase |
| title | The Effect of Foam-Recycle on Ammonium Removal by Aerobic Denitrification Using <i>Alcaligenes faecalis</i> No. 4 |
| title_full | The Effect of Foam-Recycle on Ammonium Removal by Aerobic Denitrification Using <i>Alcaligenes faecalis</i> No. 4 |
| title_fullStr | The Effect of Foam-Recycle on Ammonium Removal by Aerobic Denitrification Using <i>Alcaligenes faecalis</i> No. 4 |
| title_full_unstemmed | The Effect of Foam-Recycle on Ammonium Removal by Aerobic Denitrification Using <i>Alcaligenes faecalis</i> No. 4 |
| title_short | The Effect of Foam-Recycle on Ammonium Removal by Aerobic Denitrification Using <i>Alcaligenes faecalis</i> No. 4 |
| title_sort | effect of foam recycle on ammonium removal by aerobic denitrification using i alcaligenes faecalis i no 4 |
| topic | ammonium removal heterotrophic nitrification aerobic denitrification foam-recycle hydroxylamine oxidoreductase |
| url | https://www.mdpi.com/2076-3298/10/10/184 |
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