OPTIMUM RATIO OF CATIONS ON NUCLEAR SULFONIC ACID RESIN FOR MINIMUM CHANGE IN COMPOSITION OF RESIN-TREATED MILK

Journal Article · Fri Mar 01 04:00:00 EST 1963 · Journal of Dairy Science (U.S.)

DOI:https://doi.org/10.3168/jds.S0022-0302(63)89003-7· OSTI ID:4694714

Landgrebe, A R; Edmondson, L F; Douglas, Jr, F W

For the purpose of developing a large-scale method for removing radiostrontium from milk, preliminary studies were carried out with Amberlite IR- 120. The optimum mole fraction of the major cations (Ca/sup 2+/, K/sup +/, Na/ sup +/, and Mg/sup on the strong sulfonic acid ion-exchange resin for minimum change in milk composition was determined by equilibrating the resin with milk at pH 5.4 and 6.6. The fraction of Ca on the resin increased with decreasing pH, whereas those of Na and K decreased. Mg was present in relatively small amounts, and it appeared to be little affected by pH. Relative affinities of ions for the resin were: Sr > Ca> Mg > K> Na. By using the milk-equilibrated mole fraction of the cations on the resin, and the apparent equilibrium constants involving the ions and the resin, mixed regenerating solutions of the chlorides of the 4 cations were prepared. The concentrations were adjusted so that the ratio of ions on the resin would be in equilibrium for milk at pH 6.6 and 5.4. Milk passed through columns of these resins showed little change in the cationic composition. The cationic composition of milk varies with breed of the animal, season of the year, and with other factors. Consequently, the milk-equilibrated mole fraction of cations placed on a resin will vary. (H.H.D.)

• Research Organization: Dept. of Agriculture, Washington, D.C.
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-028855
• OSTI ID: 4694714
• Journal Information: Journal of Dairy Science (U.S.), Journal Name: Journal of Dairy Science (U.S.) Vol. Vol: 46; ISSN JDSCA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACIDITY
AMBERLITE
ANIMALS
CALCIUM COMPOUNDS
CATIONS
CHEMISTRY
CHLORIDES
GEOPHYSICS
MAGNESIUM COMPOUNDS
MILK
ORGANIC SULFUR COMPOUNDS
POTASSIUM COMPOUNDS
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
REGENERATION
RESINS
SEASONS
SODIUM COMPOUNDS
SOLUTIONS
STABILITY
STRONTIUM ISOTOPES