High dose radiolysis of aqueous solutions of chloromethanes: Importance in the storage of radioactive organic wastes

P. Rajesh; J. A. LaVerne; S. M. Pimblott

doi:10.1016/j.jnucmat.2006.10.014

High dose radiolysis of aqueous solutions of chloromethanes: Importance in the storage of radioactive organic wastes

P. Rajesh, J. A. LaVerne, S. M. Pimblott

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

The radiolysis of aqueous solutions of chloromethanes (dichloromethane, CH₂Cl₂; chloroform, CHCl₃; and carbon tetrachloride, CCl₄) was performed with γ-rays to doses sufficient to completely decompose the solute in order to estimate the effects of radiation on the long-term storage of mixed waste in enclosed containers. One of the main relevant products was the inorganic chloride anion, which increased in concentration with increasing radiation dose due to the reactions of radiolytic decomposition products of water with the chloromethane. The pH of the solutions was observed to decrease with irradiation due to the formation of H₃O⁺ as the counter ion to Cl^-, i.e. the main radiolytic decomposition product is hydrochloric acid. Polymer formation was observed in aerated solutions as a precipitate while deaerated solutions exhibited a slight turbidity.

Original language	English
Pages (from-to)	10-17
Number of pages	8
Journal	Journal of Nuclear Materials
Volume	361
Issue number	1
DOIs	https://doi.org/10.1016/j.jnucmat.2006.10.014
State	Published - Mar 31 2007
Externally published	Yes

Keywords

C0400
G0100
K0100
W0200

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10.1016/j.jnucmat.2006.10.014

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title = "High dose radiolysis of aqueous solutions of chloromethanes: Importance in the storage of radioactive organic wastes",

abstract = "The radiolysis of aqueous solutions of chloromethanes (dichloromethane, CH2Cl2; chloroform, CHCl3; and carbon tetrachloride, CCl4) was performed with γ-rays to doses sufficient to completely decompose the solute in order to estimate the effects of radiation on the long-term storage of mixed waste in enclosed containers. One of the main relevant products was the inorganic chloride anion, which increased in concentration with increasing radiation dose due to the reactions of radiolytic decomposition products of water with the chloromethane. The pH of the solutions was observed to decrease with irradiation due to the formation of H3O+ as the counter ion to Cl-, i.e. the main radiolytic decomposition product is hydrochloric acid. Polymer formation was observed in aerated solutions as a precipitate while deaerated solutions exhibited a slight turbidity.",

keywords = "C0400, G0100, K0100, W0200",

author = "P. Rajesh and LaVerne, {J. A.} and Pimblott, {S. M.}",

note = "Funding Information: The authors thank Drs K. Enomoto for help with GPC analysis and E. Carrasco-Flores for help with the FTIR analysis. This research was supported by the Office of Science (BER), US Department of Energy, and Grant No. DE-FG02-04ER63744. This contribution is NDRL-4658 from the Notre Dame Radiation Laboratory.",

year = "2007",

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doi = "10.1016/j.jnucmat.2006.10.014",

language = "English",

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T1 - High dose radiolysis of aqueous solutions of chloromethanes

T2 - Importance in the storage of radioactive organic wastes

AU - Rajesh, P.

AU - LaVerne, J. A.

AU - Pimblott, S. M.

N1 - Funding Information: The authors thank Drs K. Enomoto for help with GPC analysis and E. Carrasco-Flores for help with the FTIR analysis. This research was supported by the Office of Science (BER), US Department of Energy, and Grant No. DE-FG02-04ER63744. This contribution is NDRL-4658 from the Notre Dame Radiation Laboratory.

PY - 2007/3/31

Y1 - 2007/3/31

N2 - The radiolysis of aqueous solutions of chloromethanes (dichloromethane, CH2Cl2; chloroform, CHCl3; and carbon tetrachloride, CCl4) was performed with γ-rays to doses sufficient to completely decompose the solute in order to estimate the effects of radiation on the long-term storage of mixed waste in enclosed containers. One of the main relevant products was the inorganic chloride anion, which increased in concentration with increasing radiation dose due to the reactions of radiolytic decomposition products of water with the chloromethane. The pH of the solutions was observed to decrease with irradiation due to the formation of H3O+ as the counter ion to Cl-, i.e. the main radiolytic decomposition product is hydrochloric acid. Polymer formation was observed in aerated solutions as a precipitate while deaerated solutions exhibited a slight turbidity.

AB - The radiolysis of aqueous solutions of chloromethanes (dichloromethane, CH2Cl2; chloroform, CHCl3; and carbon tetrachloride, CCl4) was performed with γ-rays to doses sufficient to completely decompose the solute in order to estimate the effects of radiation on the long-term storage of mixed waste in enclosed containers. One of the main relevant products was the inorganic chloride anion, which increased in concentration with increasing radiation dose due to the reactions of radiolytic decomposition products of water with the chloromethane. The pH of the solutions was observed to decrease with irradiation due to the formation of H3O+ as the counter ion to Cl-, i.e. the main radiolytic decomposition product is hydrochloric acid. Polymer formation was observed in aerated solutions as a precipitate while deaerated solutions exhibited a slight turbidity.

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DO - 10.1016/j.jnucmat.2006.10.014

M3 - Article

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SN - 0022-3115

VL - 361

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EP - 17

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1

ER -

High dose radiolysis of aqueous solutions of chloromethanes: Importance in the storage of radioactive organic wastes

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Keywords

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