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Science for kinder food systems.

MSc thesis · University of Gothenburg · 2026

Dissolved oxygen and nitrogen removal by marine anammox bacteria in cold-water recirculating aquaculture systems

I investigated how dissolved oxygen affects nitrogen removal by marine anammox bacteria (Candidatus Scalindua) under conditions relevant to cold-water RAS. The results support integrating anammox-based nitrogen removal into oxygenated aquaculture systems.

90%+average ammonium and nitrite removal in marine bioreactors, at dissolved oxygen up to 4.9 mg/L

  • Supports reduced water exchange and lower energy demand for nitrogen control
  • Presented to international audiences in Sweden, Norway and Iceland

Publications

  • Peer-reviewed article

    Evaluation of Wheat and Orange-fleshed Sweet Potato Composite Flour Fortified with African Yam Bean Flour for Instant Noodle Production

    Aniebiet Obiosio et al.