METHOD FOR REMOVING CATIONIC RADIONUCLIDES FROM MILK

Journal Article · Fri Dec 01 04:00:00 EST 1961 · Journal of Dairy Science (U.S.)

DOI:https://doi.org/10.3168/jds.S0022-0302(61)90042-X· OSTI ID:4832726

Murthy, G K; Masurovsky, E B; Campbell, J E; Edmondson, L F

A new method for the removal of radioactive strontium, barlum, and ceslum from mllk was developed. Fresh samples of raw whole milk with added Sr/ sup 85/, Ba/sup 140/, or Cs/sup 134/ were stored at 4 deg C for at least 72 hr. The samples were then adjusted to a pH of 5.4 or 5.3 with 0.1 or 0.5 M citric acid and passed through a column containing Dowex 50W-X8 cationic resin in the CaMgKNa cycle. the resin was previously charged with a mixed salt solution containing Ca, Mg K, and Na chlorides in approximately the same relative proportions as in the milk, but at 5 times their usual concentrations, and at the same pH of acidified milk. After treatment, the milk was mixed with Dowex 2-X8 anionic resin in the OH- cycle, by the batch process, and the pH was brought to 6.6. The milk was filtered through a cheese cloth to remove the spent resin. Analysis of treated milk indicated that approximately 90 -95% of Sr , 85-95% of Ba/sup 140/, and 75% of Cs/sup 134/ were removed by this treatment from 25 resin- bed volumes of milk. The removal of radionuclides did not vary with flow rates of 5-25 ml per minute and the cationic composition of the milk was essentially unchanged. Although the milk was not coagulable by rennin, addition of 2-3 ml of 1 M CaCl/sub 2/ solution per liter of milk yielded coagulum comparable to that obtained with untreated milk. Further treatment of the final product with a CaMgKNa resin at pH 6.6 resulted in an additional removal of approximately 45, 30, and 90% of residual Sr/sukp 85/, Ba/sup 140/, and Cs/sup 134/ remaining after the initial treatment without further change in the gross cationic composition of the milk. Results obtained at pH 5.2-5.3 with milk labeled in vivo and in vitro were similar. (Public Health Eng. Abstr,, 42: No. 4, Apr. 1962)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-16-017935
• OSTI ID: 4832726
• Journal Information: Journal of Dairy Science (U.S.), Journal Name: Journal of Dairy Science (U.S.) Vol. Vol: 44; ISSN JDSCA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACIDITY
BARIUM 140
CALCIUM CHLORIDES
CATIONS
CESIUM 134
CITRIC ACID
CLEANING
DECONTAMINATION
DOWEX
EFFICIENCY
FILTERS
HEALTH AND SAFETY
HYDROXIDES
IN VITRO
IN VIVO
ION EXCHANGE MATERIALS
IONS
LIQUID FLOW
MAGNESIUM CHLORIDES
MILK
POTASSIUM CHLORIDES
QUANTITY RATIO
RADIOISOTOPES
RESINS
SAMPLING
SODIUM CHLORIDES
SOLUTIONS
STORAGE
STRONTIUM 85
VELOCITY
VOLUME