Development of a Novel Nano Biotechnological Process for the Removal of Ammonia from Wastewaters

Abstract

Fe3+/Mn4+ reduction coupled to nitrification and simultaneous Fe2+/Mn2+ oxidation newlinecoupled to denitrification, occurring in anoxic sediments of aquatic ecosystems, play newlinean important role in global nitrogen cycle. Till date, limited research was done in newlineapplying this phenomenon to wastewater treatment. The objective of this thesis was newlinethe development of microbial mediated anoxic ammonia removal process in the presence of synthetic Granulated Nanoscale Oxyhydroxides of Iron (GNOF) and Granulated Nanoscale Oxides of Manganese (GNOM) as a novel alternative to conventional nitrification-denitrification. This process involves bio-catalytic oxidation of NH4 + N using GNOF/GNOM as electron acceptor under anoxic environment. Here, NH4 + oxidation is associated with biogenic Fe3+/Mn4+ reduction, and simultaneous Fe2+/Mn2+ oxidation is associated with NO2 and/or NO3 reduction.