REMOVAL OF CHLORIDE ION FROM DAREX PROCESS DISSOLVER SOLUTION

Technical Report · Mon Jan 12 04:00:00 EST 1959

OSTI ID:4289499

Mendel, J E; Schulz, W W

The chloride ion concentration of Darex Process dissolver solutions can be reduced readily to 0.1 g/l or less by simple bitch boildown with addition of nitric acid. Efficiency of chloride removal is improved by preliminary concentration of the Darex solution: twofold concentration appears optimum. Utilization of nitric acid during boildown is improved at low boiloff rates but longer time cycles are required for adequate chloride removal. Boildown efficiency was not significantly improved by air sparging. Solvent extraction of Barex dissolver solutions with TBP-diluent solutions is a chemically feasible alternative to the batch boildown procedure for chloride separation and removal. With 30 per cent TBP-hydrocarbon diluent as extractant, chloride distribution ratios were in the range 0.05 to 0.1. Dual scrubbing--six scrubs with 3 M HNO/ sub 3/, 0.07 M UNH and three scrubs with water at an organic/acqueous volume ratio of 5/1--reduced the chloride concentration of organic phases derived from Darex solutions 0.19 to 1.9 M in HCl to 0.005 g/l. (auth)

• Research Organization: General Electric Co. Hanford Atomic Products Operation, Richland, Wash.
• DOE Contract Number: W-31-109-ENG-52
• NSA Number: NSA-13-009689
• OSTI ID: 4289499
• Report Number(s): HW-59033
• Country of Publication: United States
• Language: English

Related Subjects

ANIONS
CHEMICAL REACTIONS
CHEMISTRY
CHLORIDES
DAREX PROCESS
HYDROCARBONS
HYDROCHLORIC ACID
NITRIC ACID
QUANTITY RATIO
SEPARATION PROCESSES
SILVER
SOLUTIONS
SOLVENT EXTRACTION
WATER