Sunlight photochemistry of retort-water organonitrogen compounds in an inert atmosphere

Blatchley, III, E R; Daughton, C G; Thomas, J F

Title: Sunlight photochemistry of retort-water organonitrogen compounds in an inert atmosphere

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Abstract

The elevated temperature of an oil-shale codisposal process will enhance the atmospheric emission of volatile components. Important among the organic compounds are the nitrogen heterocycles and aromatic primary amines, which are chacterized by malodor and low order thresholds and by resistance to biotreatment. Atmospheric lifetimes are determined by various transport (e.g., dispersion, washout) and transformation phenomena. Photochemical alteration will be the major transformation process. Those compounds that degrade quickly may increase the atmospheric NO/sub x/ concentration, giving the potential for photochemical smog formation. Those with longer lifetimes may present health and aesthetic problems. The broad spectrum of compound types and isomers present in process-water headspace samples may result in a range of atmospheric lifetimes. The work reported here is the first investigation of vapor-phase atmospheric photoreactions leading to degradation of organonitrogen compounds emitted from process waters. Only direct photochemical reactions were studied. Headspace samples (65/sup 0/C) were generated in an inert atmosphere (N/sub 2/ gas) and exposed to atmospheric radiation in Tedlar gas-sampling bags. Headspace composition was monitored by capillary gas chromatography with flame thermionic or flame ionization detection. Time-course headspace analyses compared exposed and unexposed samples, and individual compounds were monitored to determine the degree of individual photochemical losses.more »« less

Authors:: Blatchley, III, E R; Daughton, C G; Thomas, J F

Publication Date:: Tue Apr 01 00:00:00 EST 1986

Research Org.:: Lawrence Berkeley Lab., CA (USA); California Univ., Richmond (USA). Sanitary Engineering and Environmental Health Research Lab.

OSTI Identifier:: 5473190

Report Number(s):: LBL-20824; CONF-8604172-3
ON: DE86013192

DOE Contract Number:: AC03-76SF00098

Resource Type:: Conference

Resource Relation:: Conference: 19. annual oil shale symposium, Golden, CO, USA, 21 Apr 1986; Other Information: Portions of this document are illegible in microfiche products

Country of Publication:: United States

Language:: English

Subject:: 04 OIL SHALES AND TAR SANDS; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; OIL SHALES; RETORTING; ORGANIC NITROGEN COMPOUNDS; DECOMPOSITION; PHOTOCHEMISTRY; WASTE WATER; AMINES; AROMATICS; CONTROLLED ATMOSPHERES; EXPERIMENTAL DATA; GAS CHROMATOGRAPHY; HETEROCYCLIC COMPOUNDS; ULTRAVIOLET RADIATION; ATMOSPHERES; BITUMINOUS MATERIALS; CARBONACEOUS MATERIALS; CHEMICAL REACTIONS; CHEMISTRY; CHROMATOGRAPHY; DATA; ELECTROMAGNETIC RADIATION; ENERGY SOURCES; FOSSIL FUELS; FUELS; HYDROGEN COMPOUNDS; INFORMATION; LIQUID WASTES; MATERIALS; NUMERICAL DATA; ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; RADIATIONS; SEPARATION PROCESSES; WASTES; WATER; 040900* - Oil Shales & Tar Sands- Waste management; 400500 - Photochemistry

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                    Blatchley, III, E R, Daughton, C G, and Thomas, J F. Sunlight photochemistry of retort-water organonitrogen compounds in an inert atmosphere.  United States: N. p., 1986. 
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                    Blatchley, III, E R, Daughton, C G, & Thomas, J F. Sunlight photochemistry of retort-water organonitrogen compounds in an inert atmosphere.  United States.

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                    Blatchley, III, E R, Daughton, C G, and Thomas, J F. 1986.  
        "Sunlight photochemistry of retort-water organonitrogen compounds in an inert atmosphere".  United States.

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@article{osti_5473190,

  title        = {Sunlight photochemistry of retort-water organonitrogen compounds in an inert atmosphere},

  author       = {Blatchley, III, E R and Daughton, C G and Thomas, J F},

  abstractNote = {The elevated temperature of an oil-shale codisposal process will enhance the atmospheric emission of volatile components. Important among the organic compounds are the nitrogen heterocycles and aromatic primary amines, which are chacterized by malodor and low order thresholds and by resistance to biotreatment. Atmospheric lifetimes are determined by various transport (e.g., dispersion, washout) and transformation phenomena. Photochemical alteration will be the major transformation process. Those compounds that degrade quickly may increase the atmospheric NO/sub x/ concentration, giving the potential for photochemical smog formation. Those with longer lifetimes may present health and aesthetic problems. The broad spectrum of compound types and isomers present in process-water headspace samples may result in a range of atmospheric lifetimes. The work reported here is the first investigation of vapor-phase atmospheric photoreactions leading to degradation of organonitrogen compounds emitted from process waters. Only direct photochemical reactions were studied. Headspace samples (65/sup 0/C) were generated in an inert atmosphere (N/sub 2/ gas) and exposed to atmospheric radiation in Tedlar gas-sampling bags. Headspace composition was monitored by capillary gas chromatography with flame thermionic or flame ionization detection. Time-course headspace analyses compared exposed and unexposed samples, and individual compounds were monitored to determine the degree of individual photochemical losses. Under these conditions, the alkylpyridines did not photodegrade, in contrast to other nitrogen heterocycles (e.g., pyrrole) and aromatic primary amines. This is significant because alkylpyridines comprise the largest portion of organonitrogen compounds emitted from process waters. It is anticipated that indirect photoreactions (e.g., radical-mediated) will be more extensive and important. 35 refs., 6 figs., 1 tab.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/5473190},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Apr 01 00:00:00 EST 1986},

  month        = {Tue Apr 01 00:00:00 EST 1986}

}

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