title: Reduction of NOx in Fe-EDTA and Fe-NTA solutions by an enriched bacterial population.
abstract: An enriched biomass was developed from municipal sewage sludge consisting of three dominant bacteria, representing the genera of Enterobacter, Citrobacter and Streptomyces. The biomass was used in a series of batch experiments in order to determine kinetic constants associated with biomass growth and NOx reduction in aqueous Ferrous EDTA/NTA solutions and Ferric EDTA/NTA solutions using ethanol as organic electron donor. The maximum specific reduction rates of NOx in Ferrous EDTA and Ferrous NTA solutions were 0.037 and 0.047mMolesL(-1)d(-1)mg(-1) biomass, respectively while in Ferric EDTA and Ferric NTA solutions were 0.022 and 0.024mMolesL(-1)d(-1)mg(-1) biomass, respectively. In case of Ferric EDTA/NTA solution, the kinetic constants associated with reduction of Ferric EDTA/NTA to Ferrous EDTA/NTA were also evaluated simultaneously. The maximum specific reduction rates of Ferric EDTA and Ferric NTA were 0.0021 and 0.0026mMolesL(-1)d(-1)mg(-1) biomass. The significance of these observations are presented and discussed in this paper.
authors: Environmental Biotechnology Division, National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440020, India.
authors: B
authors: B
authors: Chandrashekhar
authors: Padmaraj
authors: P
authors: Pai
authors: Amruta
authors: A
authors: Morone
authors: Nidhi
authors: N
authors: Sahu
authors: R A
authors: RA
authors: Pandey
mesh_terms: D018533:Biomass; D002954:Citrobacter / Q000254:growth & development / Q000302:isolation & purification / Q000378:metabolism; D003470:Culture Media; D004492:Edetic Acid / Q000378:metabolism; D004754:Enterobacter / Q000254:growth & development / Q000302:isolation & purification / Q000378:metabolism; D000431:Ethanol / Q000378:metabolism; D005290:Ferric Compounds / Q000378:metabolism*; D007700:Kinetics; D009571:Nitrilotriacetic Acid / Q000031:analogs & derivatives* / Q000378:metabolism; D009589:Nitrogen Oxides / Q000378:metabolism*; D010084:Oxidation-Reduction; D012722:Sewage / Q000382:microbiology*; D013302:Streptomyces / Q000254:growth & development / Q000302:isolation & purification / Q000378:metabolism
chemical_list: D003470:Culture Media; D005290:Ferric Compounds; D009589:Nitrogen Oxides; D012722:Sewage; D000431:Ethanol; D004492:Edetic Acid; D009571:Nitrilotriacetic Acid; C019179:Fe(III)-EDTA; C020326:ferric nitrilotriacetate