Repozytorium publikacji - Politechnika Gdańska

A metagenomic approach was used to investigate how the microbial community composition changes when an anammox-based granular sludge reactor is seeded with nitritation-anammox biomass from a wastewater treatment plant. In the seed sample, the abundance of Candidatus Kuenenia stuttgartiensis was similar to Candidatus Jettenia caeni (12.63 vs. 11.68%). This biomass was typical in terms of microbial nitrogen conversion; both ammonia (Nitrosomonas sp.) and nitrite (Nitrospira sp.) oxidizing bacteria were detected. In the lab-scale reactor, Candidatus Kuenenia stuttgartiensis and Candidatus Jettenia caeni bacteria were also present in equal proportions (18.57 vs. 20.89%). On the contrary, Candidatus Nitrospira defluvii bacteria were highly abundant in this reactor, but no known ammonia-oxidizing bacteria were detected. In light of recent studies showing that Nitrospira sp. are capable of complete nitrification, the results presented here may well indicate that both stages of nitrification in the anammox-based granular sludge reactor were performed by this bacteria.

Autorzy

• Slawomir Ciesielski,
• dr hab. inż. Krzysztof Czerwionka link otwiera się w nowej karcie ,
• dr inż. Dominika Sobotka link otwiera się w nowej karcie ,
• Tomasz Dulski,
• prof. dr hab. inż. Jacek Mąkinia link otwiera się w nowej karcie