Absorption of carbon dioxide in waste tanks
Technical Report
·
OSTI ID:10142026
The absorption of atmospheric carbon dioxide in eight waste tanks located in H-Area has been monitored for a period of six months. All of the tanks are continuously absorbing carbon dioxide. Approximately 75% of the carbon dioxide entering the waste tanks is absorbed when the free hydroxide concentration is above 0.1 molar. The rate of absorption decreases significantly if the free hydroxide concentration in the liquid phase falls below 0.1 molar. Based on the average instantaneous concentration of carbon dioxide in air and the fraction of carbon dioxide absorbed in Tank 42H, the rate of change in the pH and the total carbonate concentration of the washed sludge supernate has been calculated. Good agreement between experimental and calculated data was found verifying the previously reported model for calculating the rate of hydroxide depletion in dilute salt solutions.
- Research Organization:
- Du Pont de Nemours (E.I.) and Co., Aiken, SC (United States). Savannah River Lab.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC09-89SR18035
- OSTI ID:
- 10142026
- Report Number(s):
- DPST--86-735; ON: DE92013087
- Country of Publication:
- United States
- Language:
- English
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