REDUCTION OF ACIDITY OF NITRIC ACID SOLUTIONS BY USE OF FORMALDEHYDE
Patent
·
OSTI ID:4330442
A continuous method is described of concentrating by evaporation and reducing the nitrate ion content of an aqueous solution of metallic salts containing nitric acid not in excess of 8N. It consists of heating the solution and then passing formaldehyde into the heated solution to bring about decomposition of the nitric acid. The evolved gases containing NO are contacted countercurrently with an aqueous metal salt solution containing nitric acid in excess of 8N so as to bring about decomposition of the nitric acid and lower the normality to at least 8N, whereupon it is passed into the body of heated solution.
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-12-014405
- Assignee:
- U.S. Atomic Energy commission
- Patent Number(s):
- US 2835555
- OSTI ID:
- 4330442
- Country of Publication:
- United States
- Language:
- English
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