Changes in microbial communities of nitrifying immobilized biomass: the role of operational conditions

• Autorzy: Zielinska M. , Cydzik-Kwiatkowska A. , Wojnowska-Baryla I.
• Języki publikacji: EN

Abstrakty

EN

Our research determined the impact of operational conditions on the quantity of total and ammonia-oxidizing bacteria (AOB) in immobilized biomass. The experiment was conducted for two kinds of wastewater differing in organic carbon concentration at HRTs of 1.5 h, 1.0 h, and 0.5 h. The evaluation of bacteria number was accomplished by using the real-time PCR targeting ammonia monooxygenase (amoA) and 16S rDNA genes. In the absence of organic carbon in the influent, the shortening of HRT from 1.5 h to 0.5 h positively affected the AOB number in immobilized biomass, which reached even 30%. But their activity was limited. In the presence of organic carbon in the influent, the shortening of HRT below 1.5 h resulted in a decline of the abundance of ammonia-oxidizing bacteria and nitrification efficiency.

Słowa kluczowe

EN

microbial community; nitrifying immobilized biomass; operational condition; ammonia-oxidizing bacteria; population modelling; immobilized biomass; nitrification; real-time polymerase chain reaction; waste water composition; bacteria

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2012
• Tom: 21
• Numer: 4
• Opis fizyczny: p.1107-1112,fig.,ref.

Twórcy

autor

Zielinska M.

• Department of Environmental Biotechnology, University of Warmia and Mazury in Olsztyn, Słoneczna 45G, 10-709 Olsztyn, Poland

autor

Cydzik-Kwiatkowska A.

autor

Wojnowska-Baryla I.

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