Nitrogen Oxides Removal Processes for Combustion Flue Gas Treatment

Biological System for the Treatment of Nitrogen Oxides from Flue Gas

Oxides of nitrogen (NOx) is responsible for troposphere ozone and urban smog through photochemical reactions. The rapid economic growth and unlimited consumption of fossil fuels have resulted in large emissions of NOx. Due to the adverse environmental effects, environmental regulatory agencies are compelled to enforce stringent NOx emission standards. Recently promulgated Clean Air Interstate R...

Development of silica/vanadia/titania catalysts for removal of elemental mercury from coal-combustion flue gas.

SiO2/V2O5/TiO2 catalysts were synthesized for removing elemental mercury (Hg0) from simulated coal-combustion flue gas. Experiments were carried out in fixed-bed reactors using both pellet and powder catalysts. In contrast to the SiO2-TiO2 composites developed in previous studies, the V2O5 based catalysts do not need ultraviolet light activation and have higher Hg0 oxidation efficiencies. For H...

Gas cleaning in flue gas from combustion of biomass

Characterization of microbial communities removing nitrogen oxides from flue gas: the BioDeNOx process.

BioDeNOx is an integrated physicochemical and biological process for the removal of nitrogen oxides (NOx) from flue gases. In this process, the flue gas is purged through a scrubber containing a solution of Fe(II)EDTA2-, which binds the NOx to form an Fe(II)EDTA.NO2- complex. Subsequently, this complex is reduced in the bioreactor to dinitrogen by microbial denitrification. Fe(II)EDTA2-, which ...

Removal of elemental mercury from simulated coal-combustion flue gas using a SiO2–TiO2 nanocomposite

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