Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1002/bit.28349 |
Licence  |
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| Title (Primary) | N2-fixation can sustain wastewater treatment performance of photogranules under nitrogen limiting conditions |
| Author | Trebuch, L.M.; Schoofs, K.; Vaessen, S.M.F.; Neu, T.R.; Janssen, M.; Wijffels, R.H.; Vet, L.E.M.; Fernandes, T.V. |
| Source Titel | Biotechnology and Bioengineering |
| Year | 2023 |
| Department | FLOEK |
| Volume | 120 |
| Issue | 5 |
| Page From | 1303 |
| Page To | 1315 |
| Language | englisch |
| Topic | T5 Future Landscapes |
| Supplements | https://onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1002%2Fbit.28349&file=bit28349-sup-0001-Supplemental_material_Nitrogen_limitation_BnB_LMTrebuch_R1.docx |
| Keywords | confocal laser scanning microscopy; FAPROTAX; functional annotation; Microalgal-bacterial granules; nitrogen fixation; nitrogen limitation |
| Abstract | Wastewater characteristics can vary significantly, and in some municipal wastewaters the N:P ratio is as low as 5 resulting in nitrogen limiting conditions. In this study, the microbial community, function, and morphology of photogranules under nitrogen replete (N+) and limiting (N-) conditions was assessed in sequencing batch reactors. Photogranules under N- condition were nitrogen deprived 2/3 of a batch cycle duration. Surprisingly, this nitrogen limitation had no adverse effect on biomass productivity. Moreover, phosphorus and COD removal were similar to their removal under N+ conditions. Although performance was similar, the difference in granule morphology was obvious. While N+ photogranules were dense and structurally confined, N- photogranules showed loose structures with occasional voids. Microbial community analysis revealed high abundance of cyanobacteria capable of N2-fixation. These were higher at N- (38%) than N+ (29%) treatments, showing that photogranules could adjust and maintain treatment performance and high biomass productivity by means of N2-fixation. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=24806 |
| Trebuch, L.M., Schoofs, K., Vaessen, S.M.F., Neu, T.R., Janssen, M., Wijffels, R.H., Vet, L.E.M., Fernandes, T.V. (2023): N2-fixation can sustain wastewater treatment performance of photogranules under nitrogen limiting conditions Biotechnol. Bioeng. 120 (5), 1303 - 1315 10.1002/bit.28349 |
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