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Genome-based microbial ecology of anammox granules in a full-scale wastewater treatment system

Author

Listed:
  • Daan R. Speth

    (Institute for Water and Wetland Research, Radboud University)

  • Michiel H. in ’t Zandt

    (Institute for Water and Wetland Research, Radboud University)

  • Simon Guerrero-Cruz

    (Institute for Water and Wetland Research, Radboud University)

  • Bas E. Dutilh

    (Theoretical Biology and Bioinformatics, Utrecht University
    Centre for Molecular and Biomolecular Informatics, Radboud University Medical Centre
    Instituto de Biologia, Universidade Federal do Rio de Janeiro)

  • Mike S. M. Jetten

    (Institute for Water and Wetland Research, Radboud University
    Delft University of Technology)

Abstract

Partial-nitritation anammox (PNA) is a novel wastewater treatment procedure for energy-efficient ammonium removal. Here we use genome-resolved metagenomics to build a genome-based ecological model of the microbial community in a full-scale PNA reactor. Sludge from the bioreactor examined here is used to seed reactors in wastewater treatment plants around the world; however, the role of most of its microbial community in ammonium removal remains unknown. Our analysis yielded 23 near-complete draft genomes that together represent the majority of the microbial community. We assign these genomes to distinct anaerobic and aerobic microbial communities. In the aerobic community, nitrifying organisms and heterotrophs predominate. In the anaerobic community, widespread potential for partial denitrification suggests a nitrite loop increases treatment efficiency. Of our genomes, 19 have no previously cultivated or sequenced close relatives and six belong to bacterial phyla without any cultivated members, including the most complete Omnitrophica (formerly OP3) genome to date.

Suggested Citation

  • Daan R. Speth & Michiel H. in ’t Zandt & Simon Guerrero-Cruz & Bas E. Dutilh & Mike S. M. Jetten, 2016. "Genome-based microbial ecology of anammox granules in a full-scale wastewater treatment system," Nature Communications, Nature, vol. 7(1), pages 1-10, September.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11172
    DOI: 10.1038/ncomms11172
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