Biologically catalyzed reduction of nitrous oxide to nitrogen gas using waste water treatment systems

Endy, D

Title: Biologically catalyzed reduction of nitrous oxide to nitrogen gas using waste water treatment systems

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Abstract

Nitrous oxide is one of several gases in the atmosphere which contribute to the greenhouse effect and ozone depletion. Atmospheric concentrations of nitrous oxide have risen at 0.2--0.3% per year over the last thirty years A documented anthropogenic source of nitrous oxide is the nitrification/denitrification process of waste water treatment plants. One method of eliminating these emissions is to facilitate the biologically catalyzed reduction of nitrous oxide to nitrogen gas using the activated sludge from a municipal waste water treatment plant. This study details the feasibility of such a reaction. The effect of using a supplementary electron donor to encourage the reduction as well as the possible inhibition and/or competition of NO{sub x} is examined. Experimental results allow for the estimation of rate constants describing the reaction {minus}d[N{sub 2}O]/dt and indicate that an electron donor such as methanol or dextrose increases the rate of reduction significantly. These findings could be used to develop biological treatment processes for the elimination of nitrous oxide emissions from industrial sources and waste water treatment plants or for the remediation of ground waters.

Authors:

Endy, D ^[1]

Dartmouth College, Hanover, NH (United States)

Publication Date:: Sun Dec 31 00:00:00 EST 1995

OSTI Identifier:: 250901

Report Number(s):: CONF-9507204-
Journal ID: ISSN 1044-0631; TRN: IM9629%%214

Resource Type:: Conference

Resource Relation:: Conference: 27. Mid-Atlantic industrial waste conference, Bethlehem, PA (United States), 9-12 Jul 1995; Other Information: PBD: 1995; Related Information: Is Part Of Hazardous and industrial wastes: Proceedings of the twenty-seventh Mid-Atlantic industrial waste conference; Sengupta, A.K. [ed.] [Lehigh Univ., Bethlehem, PA (United States)]; PB: 973 p.

Country of Publication:: United States

Language:: English

Subject:: 54 ENVIRONMENTAL SCIENCES; NITROUS OXIDE; BIODEGRADATION; AIR POLLUTION ABATEMENT; WATER TREATMENT PLANTS; POLLUTION SOURCES; MUNICIPAL WASTES; REMEDIAL ACTION; TECHNOLOGY ASSESSMENT

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                    Endy, D. Biologically catalyzed reduction of nitrous oxide to nitrogen gas using waste water treatment systems.  United States: N. p., 1995. 
        Web.

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                    Endy, D. Biologically catalyzed reduction of nitrous oxide to nitrogen gas using waste water treatment systems.  United States.

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                    Endy, D. 1995.  
        "Biologically catalyzed reduction of nitrous oxide to nitrogen gas using waste water treatment systems".  United States.

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@article{osti_250901,

  title        = {Biologically catalyzed reduction of nitrous oxide to nitrogen gas using waste water treatment systems},

  author       = {Endy, D},

  abstractNote = {Nitrous oxide is one of several gases in the atmosphere which contribute to the greenhouse effect and ozone depletion. Atmospheric concentrations of nitrous oxide have risen at 0.2--0.3% per year over the last thirty years A documented anthropogenic source of nitrous oxide is the nitrification/denitrification process of waste water treatment plants. One method of eliminating these emissions is to facilitate the biologically catalyzed reduction of nitrous oxide to nitrogen gas using the activated sludge from a municipal waste water treatment plant. This study details the feasibility of such a reaction. The effect of using a supplementary electron donor to encourage the reduction as well as the possible inhibition and/or competition of NO{sub x} is examined. Experimental results allow for the estimation of rate constants describing the reaction {minus}d[N{sub 2}O]/dt and indicate that an electron donor such as methanol or dextrose increases the rate of reduction significantly. These findings could be used to develop biological treatment processes for the elimination of nitrous oxide emissions from industrial sources and waste water treatment plants or for the remediation of ground waters.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/250901},
  journal      = {},

  issn         = {1044-0631},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sun Dec 31 00:00:00 EST 1995},

  month        = {Sun Dec 31 00:00:00 EST 1995}

}

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