Simultaneous nitrification and phosphate removal by bioaugmented aerobic granules treating a fluoroorganic compound
| Autor: | António O. S. S. Rangel, Anouk F. Duque, Mark C.M. van Loosdrecht, Vânia S. Bessa, Merle de Kreuk, Paula M. L. Castro, Udo van Dongen, Raquel B. R. Mesquita |
|---|---|
| Přispěvatelé: | UCIBIO - Applied Molecular Biosciences Unit, DQ - Departamento de Química, Veritati - Repositório Institucional da Universidade Católica Portuguesa |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Bioaugmentation Environmental Engineering Nitrogen 2-fluorophenol (2-FP) Population 010501 environmental sciences Wastewater 01 natural sciences Environmental technology. Sanitary engineering Phosphate accumulating organisms (PAO) Ammonia oxidizing bacteria (AOB) Phosphates chemistry.chemical_compound Denitrifying bacteria Bioreactors 010608 biotechnology Microbial population dynamics Food science Nitrite education TD1-1066 0105 earth and related environmental sciences Water Science and Technology education.field_of_study Nitrite oxidizing bacteria (NOB) Sewage Granule (cell biology) Ammonia monooxygenase Nitrification Ammonia-oxidizing bacteria (AOB) chemistry Aerobic granular sludge Temperature gradient gel electrophoresis |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP Water Science and Technology, 83(10) Water Science and Technology, Vol 83, Iss 10, Pp 2404-2413 (2021) |
| ISSN: | 0273-1223 |
| Popis: | The presence of toxic compounds in wastewater can cause problems for organic matter and nutrient removal. In this study, the long-term effect of a model xenobiotic, 2-fluorophenol (2-FP), on ammonia-oxidizing bacteria (AOB), nitrite oxidizing bacteria (NOB) and phosphate accumulating organisms (PAO) in aerobic granular sludge was investigated. Phosphate (P) and ammonium (N) removal efficiencies were high (>93%) and, after bioaugmentation with 2-FP degrading strain FP1, 2-FP was completely degraded. Neither N nor P removal were affected by 50 mg L−1 of 2-FP in the feed stream. Changes in the aerobic granule bacterial communities were followed. Numerical analysis of the denaturing gradient gel electrophoresis (DGGE) profiles showed low diversity for the ammonia monooxygenase (amoA) gene with an even distribution of species. PAOs, including denitrifying PAO (dPAO), and AOB were present in the 2-FP degrading granules, although dPAO population decreased throughout the 444 days reactor operation. The results demonstrated that the aerobic granules bioaugmented with FP1 strain successfully removed N, P and 2-FP simultaneously. HIGHLIGHTS Inoculation with strain FP1 led to 2-FP removal within the aerobic phase.; Nitrifiers and PAOs activities were not affected by 2-fluorophenol.; Bioaugmented granules with FP1 were able to simultaneously remove N, P and 2-FP.; Granular sludge is promising for the treatment of wastewaters containing toxics. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|