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Development of ultrafiltration and inorganic adsorbents for reducing volumes of low-level and intermediate-level liquid waste: July--September 1978

Technical Report ·
DOI:https://doi.org/10.2172/6824647· OSTI ID:6824647
Solution processed through the ultrafiltration system was spiked with either uranium-233, neptunium-237, or plutonium 238. This solution was then pumped through the 2-in. diameter columns contained in the engineering pilot plant. Bone char was the best adsorber tested with both uranium (DF 145.6 at pH 6.5) and neptunium (DF 952.9 at pH 10). The adsorber IRA-938 had a DF of 220.9 at pH 7.4 in removing plutonium from solution. Closed system concentration runs were performed on the UF system. The results of these runs show that rejection of activity remains very good even though suspended solids and radiation levels of the feed increase dramatically during the course of the run. Also, sponge-ball cleaning techniques were demonstrated. The results of these experiments show that sponge-ball cleaning may be a workable alternative to detergent cleaning. Viscosity studies were begun this quarter. All 84 membranes have been subjected to the experimental radiation exposures, about half have been dissolved in solvent, and viscosity data are now being obtained.
Research Organization:
Mound Lab., Miamisburg, OH (USA)
DOE Contract Number:
EY-76-C-04-0053
OSTI ID:
6824647
Report Number(s):
MLM-2566
Country of Publication:
United States
Language:
English