By G. R. Choppin (auth.), Gregory R. Choppin, Mikhail Kh. Khankhasayev (eds.)
Separation applied sciences are of an important value to the target of considerably lowering the quantity of high-level nuclear waste, thereby decreasing the long term wellbeing and fitness dangers to mankind. foreign co-operation, together with the sharing of techniques and techniques, in addition to know-how move, is vital in accelerating study and improvement within the field.
The writers of this e-book are all across the world recognized specialists within the box of separation expertise, good certified to evaluate and criticize the present country of separation learn in addition to to spot destiny possibilities for the appliance of separation applied sciences to the answer of nuclear waste administration difficulties. the main emphases within the e-book are study possibilities within the usage of leading edge and in all likelihood extra effective and value potent strategies for waste processing/treatment, actinide speciation/separation equipment, technological processing, and environmental restoration.
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Additional info for Chemical Separation Technologies and Related Methods of Nuclear Waste Management: Applications, Problems, and Research Needs
5 MCi of radiostrontium with 6fold concentrating . The recovery degree of strontium was 96%. A characteristic advantage of the DCH-18Cr6 method is that the ease of strontium stripping operation is efficiently performed by water. There are intensive studies on using crown ethers for efficient recovery of cesium from HLW . In particular, dibenzo-2l-crown-7 in polyfluOfosubstituted alcohols extracts cesium in a wide range of acidity and provides rather low distribution coefficients in water stripping.
Different variants of the flowsheet with combined and separate recovery of cesium, strontium, TPE and RE were tested both on a laboratory and pilot scale levels. The developed and tested pseudomembrane method which enables to increase a recovery degree of trivalent elements from HLW by a factor of tens should be considered as an interesting modification of the extraction process with the use of ChCoDiC. This is achieved by changing the topology of connections between apparatus in the membrane variant as compared to a linear one, providing therewith the increase in efficient capacity of the extractant.
It has as its goals improving plutonium separation efficiency and reducing the volume and radioactivity of wastes that are unacceptable for surface storage. Another goal is separation of long-lived radioelements from reprocessing wastes and transmuting them into short-lived radioelements. 14E+06 y) in the waste. 2. , ~c, 12"1, and 135CS). They called this program Omega. The Japanese Omega program has the same objectives as the French SPIN program. There is collaboration between the two countries, as well as with other countries that have an interest in actinide burning although not to the extent that France and Japan have.