Accession Number : AD0429917


Title :   REMOVAL OF RADIOACTIVE MATERIAL FROM MILK BY ELECTRODIALYSIS


Descriptive Note : Final rept. July 1962-Sep 1963


Corporate Author : IONICS INC CAMBRIDGE MA


Personal Author(s) : Parsi, Edgardo J ; Iaconelli, William B


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/429917.pdf


Report Date : 07 Feb 1964


Pagination or Media Count : 223


Abstract : The removal of the radionuclide contaminants, barium, cesium, lanthanum, cerium and iodine, from milk by electrodialysis was investigated. As in the ion exchange process, over 90% removal of strontium is obtained when the pH of the milk is adjusted to 5.1 to 5.3, whereas at the normal milk pH poor removal is obtained. At 90% removal of strontium, about 80% of the barium and over 99% of the cesium is removed. Very slight removal of lanthanum and no removal of cerium has been observed. In the decontamination process radioactive ions are purged electrically from the milk through an ion transfer membrane along with other ions normally present in milk into a waste solution. The latter ions are replaced simultaneously through another ion-transfer membrane from an aqueous solution of salts (make-up solution). The salt concentration and composition of the milk can be maintained by controlling the composition and concentration of the make-up solution. Less than 1% of the lactose in the milk was lost to the waste solution. Therefore, the loss of organics from the milk to the waste solution can be assumed to be negligible.


Descriptors :   *DECONTAMINATION , *MILK , *ELECTRODIALYSIS , CESIUM , COSTS , CERIUM , IODINE , RARE EARTH ELEMENTS , BARIUM , STRONTIUM , RADIOACTIVE CONTAMINATION , PH FACTOR , ION EXCHANGE , TRACER STUDIES


Subject Categories : Radiobiology
      Food, Food Service and Nutrition


Distribution Statement : APPROVED FOR PUBLIC RELEASE