Selective extraction of lead from various debris using a water soluble polymer
- Los Alamos National Lab., NM (United States)
Stewardship of the nuclear stockpile has become a primary mission for Los Alamos National Laboratory. To better understand the aging of the stockpile, test shots involving non-fissile materials are being performed. These shots will contain Pb, depleted U, and many other elements, some of which are toxic. In order to minimize emissions to the environment, a plan to contain these test shots in vessels has been initiated in conjunction with the DARHT (Dual Axis Radiographic Hydrodynamic Test) program. Following the test shots, debris will be contaminated with both Pb, a RCRA-hazardous metal and depleted U. Selectively separating these two metals from the shot debris will facilitate recovery of depleted uranium as well as disposal of the waste. A water soluble polymer has been employed to selectively extract Pb from the debris. Initial studies on Pb-contaminated debris have demonstrated excellent removal rates, typically extracting >80% of the lead, with the subsequent treated debris readily passing TCLP. Following extraction, the polymer-Pb solution is concentrated using ultrafiltration, reducing the volume of Pb-contaminated waste 1 to 2 orders of magnitude, thus minimizing the waste stream.
- OSTI ID:
- 559922
- Report Number(s):
- CONF-970443-; TRN: 98:002138
- Resource Relation:
- Conference: 213. national meeting of the American Chemical Society, San Francisco, CA (United States), 13-17 Apr 1997; Other Information: PBD: 1997; Related Information: Is Part Of 213th ACS national meeting; PB: 2904 p.
- Country of Publication:
- United States
- Language:
- English
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