Feammox bacterial biofilm formation in HFMB.

Nitrogen pollution has been increasing with the development of industrialization. Consequently, the excessive deposition of reactive nitrogen in the environment has generated the loss of biodiversity and eutrophication of different ecosystems. In 2005, a Feammox process was discovered that anaerobically metabolizes ammonium.

Coupling of the Feammox - Anammox pathways by using a sequential discontinuous bioreactor.

Treating nitrogenous compounds in wastewater is a contemporary challenge, prompting novel approaches for ammonium (NH) conversion to molecular nitrogen (N). This study explores the classic anaerobic ammonium oxidation process (Anammox) coupled to the iron-dependent anaerobic ammonium oxidation process (Feammox) in a sequential discontinuous bioreactor (SBR) for NH removal. Feammox and Anammox cultures were individually enriched and combined, optimizing the coupling, and identifying key variables influencing the enrichment process.