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Nitrate reduction by organotrophic Anammox bacteria in a nitritation/anammox granular sludge and a moving bed biofilm reactor
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering (moved 20130630).
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering (moved 20130630), Water, Sewage and Waste technology.
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2012 (English)In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 114, 217-223 p.Article in journal (Refereed) Published
Abstract [en]

The effects of volatile fatty acids (VFAs) on nitrogen removal and microbial community structure in nitritation/anammox process were compared within a granular sludge reactor and a moving bed biofilm reactor. Nitrate productions in both systems were lower by 40-68% in comparison with expected nitrate production. Expected sludge production on VFAs was estimated to be 67-77% higher if heterotrophs were the main acetate degraders suggesting that Anammox bacteria used its organotrophic capability and successfully competed with general heterotrophs for organic carbon, which led to a reduced sludge production. FISH measurements showed a population consisting of mainly Anammox and AOB in both reactors and oxygen uptake rate (OUR) tests also confirmed that flocculent biomass consisted of a minor proportion of heterotrophs with a large proportion of AOBs. The dominant Anammox bacterium was Candidatus " Brocadia fulgida" with a minor fraction of Candidatus " Anammoxoglobus propionicus" both known to be capable of oxidizing VFAs.

Place, publisher, year, edition, pages
2012. Vol. 114, 217-223 p.
Keyword [en]
Acetate, Ammonium oxidizing bacteria, Anammox bacteria, Heterotrophic bacteria, Nitrate
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-96188DOI: 10.1016/j.biortech.2012.03.070ISI: 000305035900029ScopusID: 2-s2.0-84860462647OAI: diva2:529872
QC 20120531Available from: 2012-05-31 Created: 2012-05-31 Last updated: 2012-07-30Bibliographically approved

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Yang, JingjingPlaza, ElzbietaTrela, JozefHultman, Bengt
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Land and Water Resources Engineering (moved 20130630)Water, Sewage and Waste technology
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