Performance of Mn-Ce-Fe/FA Catalysts on Selective Catalytic Reduction of NOX with CO under Different Atmospheres

Energies, Год журнала: 2023, Номер 16(9), С. 3859 - 3859

Опубликована: Апрель 30, 2023

Gas turbines produce a large amount of NOx and CO due to high temperatures insufficient combustion. Through the selective catalytic reduction NO with (CO-SCR) in gas turbine, activities Mn-Fe-Ce/FA catalyst using fly ash (FA) as carrier under different atmospheres were studied. The catalysts prepared by calcining active materials used analyze their denitrification abilities resistance water vapor. performance reducing atmosphere is about 30 percent higher than that air atmosphere, decarburization 40 higher. In presence oxygen, rate 1:1 ratio Mn-Ce reach 67.16% 59.57%, respectively. an oxygen-containing replacing Ce Fe shows better performances, which are 78.56% 78.39%, When flue space velocity 4000 h−1 carbon-nitrogen 1.6, performance. After vapor introduced, decarbonization rates decrease 10% 9%, ceasing vapor, it rebounds 8%, activity could not be fully restored. However, still strong general.

Язык: Английский

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Efficient nitrogen removal via simultaneous ammonium assimilation and heterotrophic denitrification of Paracoccus denitrificans R-1 under aerobic and anaerobic conditions

Research Square (Research Square), Год журнала: 2024, Номер unknown

Опубликована: Янв. 25, 2024

Abstract Although multiple microorganisms can remove ammonium and nitrate simultaneously, their metabolic mechanisms are not well understood. Strain R-1, isolated from the activated sludge of a sewage treatment plant, was identified as Paracoccus denitrificans , found to efficiently under anaerobic aerobic conditions. The maximal NH 4 + removal rate (RR = 9.94 mg·L − 1 ·h ) significantly higher conditions than 2.91 ). Analysis nitrogen balance isotope tracers indicated that consumed through assimilation, but nitrification. NO 3 RR strain R-1 18.05 19.76 conditions, respectively, reduction able support growth stoichiometric consumption ratios acetate lactate were 0.902 0.691, respectively. 15 isotopic tracer experiment demonstrated reduced N 2 by denitrification. These results respiratory process coupled with oxidation electron donors. Genomic analysis showed contained complete genes for metabolism pathways assimilation denitrification, nitrification, which is consistent physiological inorganic in R-1. Moreover, we denitrification effectively promoted each other. Our findings demonstrate mechanism simultaneous involves provide new insights into microbial transformation facilitate single reaction system.

Язык: Английский

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Efficient Strategy for Employing Hn-Ad Bacterium Enhanced Biofilter Reactors to Remove Nh3 and Reduce Secondary Pollution

Опубликована: Янв. 1, 2024

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Язык: Английский

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The mechanism of survival and degradation of phenol by Acinetobacter pittii in an extremely acidic environment

Environmental Research, Год журнала: 2024, Номер 260, С. 119596 - 119596

Опубликована: Июль 14, 2024

Язык: Английский

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Efficient strategy for employing HN-AD bacterium enhanced biofilter reactors to remove NH3 and reduce secondary pollution

Journal of Hazardous Materials, Год журнала: 2024, Номер 480, С. 135802 - 135802

Опубликована: Сен. 19, 2024

Язык: Английский

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