Autotrophic Nitrogen Removal in a Membrane-Aerated Biofilm Reactor Under Continuous Aeration: A Demonstration
TL;DR: Controlling the relative surface loadings of oxygen versus ammonium prevented complete nitrite oxidation and allowed anaerobic ammonium-oxidizing bacteria (AnaerAOB) to develop and be retained for >250 days.
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Abstract: This work describes the successful coupling of partial nitrification (nitritation) and anaerobic ammonium oxidation in a membrane-aerated biofilm reactor (MABR) with continuous aeration. Controlling the relative surface loadings of oxygen versus ammonium prevented complete nitrite oxidation and allowed anaerobic ammonium-oxidizing bacteria (AnaerAOB) to develop and be retained for >250 days. Daily autotrophic nitrogen removal of 1.7 g N/m2 (75% of influent N load) was achieved at an oxygen/nitrogen surface loading ratio of 2.2, with up to 85% of the influent N proceeding through AnaerAOB. During early nitritation, nitrogen oxide (NO(g), NO2(g), and N2O(g)) emissions comprised up to 10% of the removed influent nitrogen, but emissions disappeared after proliferation of AnaerAOB. Microbial communities were radially stratified, with aerobic ammonium-oxidizing bacteria (AerAOB) colonizing nearest to and AnaerAOB furthest from the membrane. Despite the presence of nitrite-oxidizing bacteria, this work ...
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References
•Journal Article
Inhibition of nitrification by ammonia and nitrous acid
TL;DR: The importance of NITRIFICATION has been recognized for more than a hundred years and engineers and scientists continue to investigate the process to obtain a better understanding of the fundamentals and to use the process for the benefit of man.
2.3K
Ammonia oxidation kinetics determine niche separation of nitrifying Archaea and Bacteria
Willm Martens-Habbena,Paul M. Berube,Paul M. Berube,Hidetoshi Urakawa,José R. de la Torre,José R. de la Torre,David A. Stahl +6 more
TL;DR: Oligotrophic ammonia oxidation kinetics and cellular characteristics of the mesophilic crenarchaeon ‘Candidatus Nitrosopumilus maritimus’ strain SCM1 support the hypothesis that nitrification is more prevalent in the marine nitrogen cycle than accounted for in current biogeochemical models.
The sharon process: an innovative method for nitrogen removal from ammonium-rich waste water
TL;DR: In this paper, a new biological process for ammonia removal from flows containing hundreds to thousands milligrams NH + 4 per litre has been developed at the Delft University of Technology.
1K
Completely autotrophic nitrogen removal over nitrite in one single reactor
A. Olav Sliekers,N Derwort,J L Campos Gomez,Marc Strous,Marc Strous,J.G. Kuenen,Mike S. M. Jetten,Mike S. M. Jetten +7 more
TL;DR: The microbiology and the feasibility of a new, single-stage, reactor for completely autotrophic ammonia removal were investigated and showed that during steady state, anaerobic ammonium-oxidizing bacteria remained present and active.
712
15N Kinetic Analysis of N2O Production by Nitrosomonas europaea: an Examination of Nitrifier Denitrification
Mark A. Poth,Dennis D. Focht +1 more
TL;DR: It is concluded that N. europaea is a denitrifier which, under conditions of oxygen stress, uses nitrite as a terminal electron acceptor and produces nitrous oxide.
662
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