Biological removal of NOx from flue gas.
BioDeNOx is a novel integrated physico-chemical and biological process for the removal of nitrogen oxides (NOx) from flue gas. Due to the high temperature of flue gas the process is performed at a temperature between 50-55 degrees C. Flue gas containing CO2, O2, SO2 and NOx, is purged through Fe(II)EDTA2- containing liquid. The Fe(II)EDTA2- complex effectively binds the NOx; the bound NOx is converted into N2 in a complex reaction sequence. In this paper an overview of the potential microbial reactions in the BioDeNOx process is discussed. It is evident that though the process looks simple, due to the large number of parallel potential reactions and serial microbial conversions, it is much more complex. There is a need for a detailed investigation in order to properly understand and optimise the process.
Kumaraswamy
R
R
Department of Biotechnology, Delft University of Technology, 2628 BC Delft, The Netherlands. R.Kumaraswamy@tnw.tudelft.nl
Muyzer
G
G
Kuenen
J G
JG
Loosdrecht
M C M
MC
D000393:Air Pollutants / Q000302:isolation & purification*; D001421:Bacteria, Anaerobic / Q000378:metabolism*; D018533:Biomass; D019149:Bioreactors / Q000382:microbiology*; D002245:Carbon Dioxide / Q000737:chemistry; D002384:Catalysis; D004492:Edetic Acid / Q000737:chemistry / Q000378:metabolism; D005296:Ferrous Compounds / Q000737:chemistry / Q000378:metabolism; D005740:Gases / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry; D009589:Nitrogen Oxides / Q000302:isolation & purification*; D010084:Oxidation-Reduction; D013458:Sulfur Dioxide / Q000737:chemistry; D013696:Temperature
D000393:Air Pollutants; D005296:Ferrous Compounds; D005740:Gases; D009589:Nitrogen Oxides; D013458:Sulfur Dioxide; D002245:Carbon Dioxide; C055526:Fe(II)-EDTA; D004492:Edetic Acid; D009584:Nitrogen