Sonochemical dechlorination of hazardous wastes in aqueous systems

Catallo, W J; Junk, T

doi:10.1016/0956-053X(95)00024-T

Title: Sonochemical dechlorination of hazardous wastes in aqueous systems

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Abstract

Physical processes resulting from ultrasonication of aqueous solutions and suspensions produce extreme conditions that can affect the chemistry of dissolved and suspended chemicals. The purpose of this work was to explore the use of sonochemistry in treating chlorinated chemicals in water. The compounds examined for susceptibility to aqueous sonochemical transformation were chlorpyrifos, 3,3{prime},4,4{prime}-tetrachloroazoxybenzene, 2-chlorobiphenyl, 2,4,8-trichlorodibenzofuran, lindane (hexachlorocyclohexane, {gamma}-isomer), hexachlorobenzene, aldrin, and a complex mixture of chlorinated olefins, paraffins, and aromatics from a Louisiana Superfund Site. It was fond that many chemicals were dechlorinated and/or otherwise transformed by sonochemical treatment under minimal conditions. Evidence for sonochemical transformation and dechlorination of the target chemicals and mixtures was obtained from controlled experiments measuring (1) increases in titratable chloride from sonochemical treatment, (2) decreases in pH, (3) changes in aqueous phase UV/visible absorption spectra, (4) changes in aqueous electrochemistry, and (5) generation of sonolysis products and/or decreases in target compounds vs appropriate control in internally standardized GC-MS analysis of extracts.

Authors:

Catallo, W J; Junk, T ^[1]

Louisiana State Univ., Baton Rouge, LA (United States)

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

OSTI Identifier:: 153560

Resource Type:: Journal Article

Journal Name:: Waste Management

Additional Journal Information:: Journal Volume: 15; Journal Issue: 4; Other Information: PBD: 1995

Country of Publication:: United States

Language:: English

Subject:: 54 ENVIRONMENTAL SCIENCES; LOUISIANA; REMEDIAL ACTION; CHLORINATED AROMATIC HYDROCARBONS; DECHLORINATION; ULTRASONOGRAPHY; HAZARDOUS MATERIALS; TECHNOLOGY ASSESSMENT

Citation Formats


                    Catallo, W J, and Junk, T. Sonochemical dechlorination of hazardous wastes in aqueous systems.  United States: N. p., 1995. 
        Web.  doi:10.1016/0956-053X(95)00024-T.

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                    Catallo, W J, & Junk, T. Sonochemical dechlorination of hazardous wastes in aqueous systems.  United States.  https://doi.org/10.1016/0956-053X(95)00024-T

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                    Catallo, W J, and Junk, T. 1995.  
        "Sonochemical dechlorination of hazardous wastes in aqueous systems".  United States.  https://doi.org/10.1016/0956-053X(95)00024-T.

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@article{osti_153560,

  title        = {Sonochemical dechlorination of hazardous wastes in aqueous systems},

  author       = {Catallo, W J and Junk, T},

  abstractNote = {Physical processes resulting from ultrasonication of aqueous solutions and suspensions produce extreme conditions that can affect the chemistry of dissolved and suspended chemicals. The purpose of this work was to explore the use of sonochemistry in treating chlorinated chemicals in water. The compounds examined for susceptibility to aqueous sonochemical transformation were chlorpyrifos, 3,3{prime},4,4{prime}-tetrachloroazoxybenzene, 2-chlorobiphenyl, 2,4,8-trichlorodibenzofuran, lindane (hexachlorocyclohexane, {gamma}-isomer), hexachlorobenzene, aldrin, and a complex mixture of chlorinated olefins, paraffins, and aromatics from a Louisiana Superfund Site. It was fond that many chemicals were dechlorinated and/or otherwise transformed by sonochemical treatment under minimal conditions. Evidence for sonochemical transformation and dechlorination of the target chemicals and mixtures was obtained from controlled experiments measuring (1) increases in titratable chloride from sonochemical treatment, (2) decreases in pH, (3) changes in aqueous phase UV/visible absorption spectra, (4) changes in aqueous electrochemistry, and (5) generation of sonolysis products and/or decreases in target compounds vs appropriate control in internally standardized GC-MS analysis of extracts.},

  doi          = {10.1016/0956-053X(95)00024-T},

  url          = {https://www.osti.gov/biblio/153560},
  journal      = {Waste Management},
number       = 4,

  volume       = 15,

  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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https://doi.org/10.1016/0956-053X(95)00024-T

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