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Anoxic Microbial Community Robustness Under Variation of Hydraulic Retention Time and Availability of Endogenous Electron Donors
(Springer, 2020-05-11)
The ADNMED (Anaerobic Digestion, Nitrification, and Mixotrophic Endogenous Denitrification) system comprises a triple chamber configuration that was shown to provide high-quality effluent regarding carbon, nitrogen, and ...
Effect of sulfide concentration on autotrophic denitrification from nitrate and nitrite in vertical fixed-bed reactors
(ELSEVIER SCI LTDOXFORD, 2012)
Autotrophic denitrification coupled with sulfide oxidation represents an interesting alternative for the simultaneous removal of nitrate/nitrite and sulfide from wastewaters. The applicability of such bioprocess is especially ...
Determination of the intrinsic kinetic parameters of sulfide-oxidizing autotrophic denitrification in differential reactors containing immobilized biomass
(ELSEVIER SCI LTDOXFORD, 2012)
Nitrogen removal coupled with sulfide oxidation has potential for the treatment of effluents from anaerobic reactors because they contain sulfide, which can be used as an endogenous electron donor for denitrification. This ...
Chloroplasts as a nitric oxide cellular source: Effect of reactive nitrogen species on chloroplastic lipids and proteins
(American Society of Plant Biologist, 2006-11)
Nitric oxide (NO) generation by soybean (Glycine max var. ADM 4800) chloroplasts was studied as an endogenous product assessed by the electron paramagnetic resonance spin-trapping technique. Nitrite and L-arginine (Arg) ...
Rationally designed mimics of antioxidant manganoenzymes: Role of structural features in the quest for catalysts with catalase and superoxide dismutase activity
(Elsevier Science Sa, 2018-06)
Manganese catalases (MnCAT) and superoxide dismutases (MnSOD) deplete hydrogen peroxide and superoxide in cells through a ping-pong mechanism involving cyclic oxidation and reduction of the metal cofactor. In a variety of ...
Microbial community in a pilot-scale bioreactor promoting anaerobic digestion and sulfur-driven denitrification for domestic sewage treatment
(Springer, 2016)
A pilot-scale reactor treating domestic sewage was operated to promote anaerobic digestion and denitrification using endogenous electron donors. While 55 % of organic matter was removed, nitrogen and sulfur showed a different ...
Structural and molecular basis of the peroxynitrite-mediated nitration and inactivation of Trypanosoma Cruzi iron-superoxide dismutases (fe-sods) A and B. Disparate susceptibilities due to the repair of tyr35 radical by cys83 in fe-sodb through intramolecular electron transfer
(American Society for Biochemistry and Molecular Biology, 2014-05)
Trypanosoma cruzi, the causative agent of Chagas disease, contains exclusively iron-dependent superoxide dismutases (Fe-SODs) located in different subcellular compartments. Peroxynitrite, a key cytotoxic and oxidizing ...
Reactions of HNO with Metal Porphyrins: Underscoring the Biological Relevance of HNO
(American Chemical Society, 2014-09)
Azanone (1 HNO, nitroxyl) shows interesting yet poorly understood chemical and biological effects. HNO has some overlapping properties with nitric oxide (NO), sharing its biological reactivity toward heme proteins, thiols, ...