Effect of sulfamethoxazole and oxytetracycline on enhanced biological phosphorus removal and bacterial community structure

2021 ◽  
Vol 319 ◽  
pp. 124067
Author(s):  
Sha Long ◽  
Yongkui Yang ◽  
Spyros G. Pavlostathis ◽  
Lin Zhao
Keyword(s):  
Community Structure ◽  
Bacterial Community ◽  
Phosphorus Removal ◽  
Bacterial Community Structure ◽  
Enhanced Biological Phosphorus Removal ◽  
Biological Phosphorus Removal ◽  
Biological Phosphorus

Polyphosphate kinase genes from activated sludge carrying out enhanced biological phosphorus removal

2002 ◽  
Vol 46 (1-2) ◽  
pp. 155-162 ◽  
Author(s):  
K.D. McMahon ◽  
D. Jenkins ◽  
J.D. Keasling
Keyword(s):  
Community Structure ◽  
Activated Sludge ◽  
Phosphorus Removal ◽  
Small Subunit ◽  
Close Relative ◽  
Polyphosphate Kinase ◽  
Batch Reactors ◽  
Enhanced Biological Phosphorus Removal ◽  
Biological Phosphorus Removal ◽  
Biological Phosphorus

The community structure and metabolic function of activated sludge carrying out enhanced biological phosphorus removal have been investigated. Laboratory-scale sequencing batch reactors were operated at several influent COD/P ratios to obtain sludges with a range of phosphorus contents. Molecular microbiological techniques based on small subunit ribosomal RNA were used to characterize the community structure of these sludges. The dominant polyphosphate accumulating organism was a close relative of Rhodocyclus tenuis, a member of the β subclass of the Proteobacteria. Fragments of genes coding for polyphosphate kinase (PPK), thought to be responsible for polyphosphate accumulation, were retrieved from one of the sludges. The relative abundance of PPK gene copies in genomic DNA extracted from sludges was determined to confirm that at least one of the PPK gene sequences was derived from the dominant polyphosphate accumulating organism.

Sign in / Sign up

Export Citation Format

Share Document