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Gamma-Ray-Induced Destruction of Nitrilotriacetic Acid in a Simulated, Mixed Nuclear Waste: Radiolytic and Chemical Forces

Published/Copyright: January 26, 2017
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Journal of Advanced Oxidation Technologies
From the journal Journal of Advanced Oxidation Technologies Volume 3 Issue 1

Abstract

This study explores the efficacy of γ-radiation for destroying nitrilotriacetic acid (NTA) in a simulated mixed waste, formulated to mimic a complex concentrate waste stored at the U. S. Department of Energy's Hanford Site. NTA was added to an inorganic waste matrix, which contained no radionuclides. The simulant then received a γ-dose of 7.5 × 1O6 ±10% R in a 60Co-source (operating temperature 90-95 °C). Virtually all of the NTA was destroyed, and only 9.1% of the simulant's original organic content was detected after irradiation. Six degradation products, 4 chelator fragments and 2 carboxjylic acids, were identified by gas chromatography/ mass spectrometry. Control studies were also carried out to assess the impact of the harsh chemistry of the waste's inorganic matrix and the 60Co-source’s heat on the chemo-degradation of NTA. The matrix caused only partial NTA degradation (22.2%), with the formation of only 2 chelator fragments, while the source's heat itself had little additional impact.

Received: 1997-6-2
Accepted: 1997-9-27
Published Online: 2017-1-26
Published in Print: 1998-1-1

© 2017 by Walter de Gruyter Berlin/Boston

Articles in the same Issue

  1. Masthead
  2. Contents
  3. Preface
  4. Editorial
  5. Research Articles
  6. Formation and Degradation of Halogenated Organic Acids. Radiation versus Photocatalytically Induced Processes
  7. Environmental Radiolysis for Soil and Sediment Treatment: A Review of Chemistry, Design, and Economic Issues
  8. Radiolytic Reduction and Oxidation of Diethyl benzylphosphonate: A Pulse Radiolysis Study
  9. The Elimination of Methane Phosphonic Acid, Dimethyl Ester (DMMP) from Aqueous Solution Using 60Co-y and Electron Beam Induced Radiolysis: A Model Compound for Evaluating the Effectiveness of the Ε-Beam Process in the Destruction of Organophosphorus Chemical Warfare Agents
  10. Decontamination of Soil Contaminated with Aroclor 1260 Using a Solvent Extraction Process and γ-Ray Radiolysis
  11. Gamma-Ray Destruction of EDTA Catalyzed by Titania
  12. Gamma-Ray-Induced Destruction of Nitrilotriacetic Acid in a Simulated, Mixed Nuclear Waste: Radiolytic and Chemical Forces
  13. Decomposition of Volatile Organic Compounds in Air by Electron Beam and Gamma Ray Irradiation
  14. Electron Beam Degradation of Chlorinated Hydrocarbons Air-stripped from Polluted Ground Water: a Laboratory and Field Study
  15. Field Evaluation of High Voltage Electron Beam Technology for Treating VOC-Contaminated Groundwater. Part I: VOC Removals and Treatment Costs
  16. Field Evaluation of High Voltage Electron Beam Technology for Treating VOC-Contaminated Groundwater. Part II: Acute Toxicity Changes and By-Product Formation
  17. Decolorization of Simulated Dye Wastewater by High Energy Electron Beam Irradiation with Fe(II) Addition
https://doi.org/10.1515/jaots-1998-0110

Articles in the same Issue

  1. Masthead
  2. Contents
  3. Preface
  4. Editorial
  5. Research Articles
  6. Formation and Degradation of Halogenated Organic Acids. Radiation versus Photocatalytically Induced Processes
  7. Environmental Radiolysis for Soil and Sediment Treatment: A Review of Chemistry, Design, and Economic Issues
  8. Radiolytic Reduction and Oxidation of Diethyl benzylphosphonate: A Pulse Radiolysis Study
  9. The Elimination of Methane Phosphonic Acid, Dimethyl Ester (DMMP) from Aqueous Solution Using 60Co-y and Electron Beam Induced Radiolysis: A Model Compound for Evaluating the Effectiveness of the Ε-Beam Process in the Destruction of Organophosphorus Chemical Warfare Agents
  10. Decontamination of Soil Contaminated with Aroclor 1260 Using a Solvent Extraction Process and γ-Ray Radiolysis
  11. Gamma-Ray Destruction of EDTA Catalyzed by Titania
  12. Gamma-Ray-Induced Destruction of Nitrilotriacetic Acid in a Simulated, Mixed Nuclear Waste: Radiolytic and Chemical Forces
  13. Decomposition of Volatile Organic Compounds in Air by Electron Beam and Gamma Ray Irradiation
  14. Electron Beam Degradation of Chlorinated Hydrocarbons Air-stripped from Polluted Ground Water: a Laboratory and Field Study
  15. Field Evaluation of High Voltage Electron Beam Technology for Treating VOC-Contaminated Groundwater. Part I: VOC Removals and Treatment Costs
  16. Field Evaluation of High Voltage Electron Beam Technology for Treating VOC-Contaminated Groundwater. Part II: Acute Toxicity Changes and By-Product Formation
  17. Decolorization of Simulated Dye Wastewater by High Energy Electron Beam Irradiation with Fe(II) Addition
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