Herein, an electrochemical nitrogen oxidation reaction (NOR) approach is developed to produce nitrate catalyzed by ZnFexCo2﹛O4 spinel oxides in an alkaline electrolyte. As revealed by theoretical and experimental results, Fe is found to facilitate the formation of the first N㎡ bond on the *N ...
The particular set of reactivities of nitrogen donors and of peroxodisulfate that make their interactions mechanistically complicated are discussed. Two reactions of this class have been studied experimentally. In the oxidation of nitrite ion by peroxodisulfate, the nitrogeneous product is nitrate. The ra...
The effect of surface oxidation state on particles-protein conjugation intensity and model were quantitatively evaluated by CZE and ACE methods. The oxidation state determined the conjugation intensity and model, towards BSA, the nitro-particles shown larger affinity than amino-particles, the accumulation...
The C-3 thiopyridinium rings were substituted at nitrogen with amino acid and pyruvic acid groups that were designed to confer aqueous solubility as required for IV formulation. A series of cephalosporins bearing a 5,5-fused ring system, an (imidazo[5,1-b]thiazolium-6-yl)methyl group, at ...
8. Potassium Nitrate (KNO3) The oxidation number of potassium (K) and oxygen (O) are +1 and -2, respectively. KNO3 is a neutral compound. Let x be the oxidation number of nitrogen (N). Therefore, +1 + x + (-2) x 3 = 0 Or, 1 + x – 6 = 0 Or, x = +5 The following...
Electrocatalytic oxidation offers opportunities for sustainable environmental remediation, but it is often hampered by the slow mass transfer and short lives of electro-generated radicals. Here, we achieve a four times higher kinetic constant (18.9 min
Estuarine sediments are critical for the remediation of large amounts of anthropogenic nitrogen (N) loading via production of N2 from nitrate by denitrification. However, nitrate is also recycled within sediments by dissimilatory nitrate reduction to ammonium (DNRA). Understanding the factors that influe...
Molecular biology analysis revealed the correlation between variations in nitrogen removal and changes in bacterial community composition. 展开 关键词: Orbal oxidation ditch Nitrogen removal Internal nitrate recycle Aerated-anoxic Pre-denitrification
in the microbial nitrogen cycle4. To remove toxic NO, microorganisms use a multitude of enzymes, and intricate mechanisms that sense, scavenge, and convert NO to less reactive compounds such as N2O5. Due to its high reactivity, NO exists only at very low concentrations in cells, and is ...
Heterotrophic activity, primarily driven by sulfate-reducing prokaryotes, has traditionally been linked to nitrogen fixation in the root zone of coastal marine plants, leaving the role of chemolithoautotrophy in this process unexplored. Here, we show tha