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Bruna de S Moraes
Bruna de S Moraes
Brazilian Bioethanol Science and Technology Laboratory (CTBE), Brazilian Center for Research in Energy and Materials (CNPEM), Rua Giuseppe Maximo Scolfaro, 10.000, Polo II de Alta Tecnologia, P.O. Box 6170, Campinas, Sao Paulo 13083 - 970,
Brazil
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Research Article
Shortcut Nitrification-Denitrification Coupled With Sulfide Oxidation In A Single Reactor
Author(s): Bruna de S Moraes, João G T Orrú, Catarina C de Andrade, Débora F Fonseca and Eugenio ForestiBruna de S Moraes, João G T Orrú, Catarina C de Andrade, Débora F Fonseca and Eugenio Foresti
Nitrogen removal coupled with sulfide oxidation may be a suitable option for the post-treatment of anaerobic reactor effluents that contain ammoniacal nitrogen, which must be nitrified, and sulfide, which could be used as an endogenous electron donor for autotrophic denitrification. This research proposes the application of shortcut nitrification-denitrification coupled with sulfide oxidation in a single reactor to remove nitrogen from effluents of anaerobic reactors treating domestic sewage.A fixed-bed sequencing batch reactor (FBSBR) was used, operating in 8-hour cycles, subjected to intermittent aeration and employing autotrophic denitrification using the sulfide present in the effluent, pretreated anaerobically, as an electron donor.Nitrite accumulation was observed after application of the sulfide shock load, which inhibited the nitriteoxidizing bacteria.However, it was difficult.. View More»
DOI: 10.4172/1948-5948.1000127