High specific activity for anammox bacteria enriched from activated sludge at 10°C
Artikel i vetenskaplig tidskrift, 2014

Anammox in the water line of a waste water treatment plant (WWTP) saves energy for aeration and allows for recovering biogas from organic material. Main challenges for applying the anammox process in the water line are related to the low temperature of <20°C, causing a significant drop in the specific anammox activity. The aim of this research was to enrich a cold-adapted anammox species, with a high specific activity. This was achieved in a 4.2L reactor operated at 10°C, fed with 61mg (NH4+NO2)-N/L and inoculated with activated sludge from two selected municipal WWTPs. Candidatus Brocadia fulgida was the dominant species in the enriched biomass, with a specific activity was 30-44mgN/(gVSd). This is two times higher than previously reported at 10°C, which is beneficial for full scale application. Biomass yield was 0.046gbiomass/gN converted, similar to that at higher temperatures. © 2014 Elsevier Ltd.

10°C anammox enrichment

Specific activity

Temperature dependency

Low ammonium concentration

Autotrophic nitrogen removal


T.L.G. Hendrickx

Wageningen University and Research

Christel Kampman

Chalmers, Kemi- och bioteknik, Industriell Bioteknik

G. Zeeman

Wageningen University and Research

H. Temmink

Wageningen University and Research

Z. Hu

Radboud Universiteit

B. Kartal

Radboud Universiteit

C.J.N. Buisman

Wageningen University and Research

Bioresource Technology

0960-8524 (ISSN)

Vol. 163 214-222





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