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Title: Removal of Radioactive Cations and Anions from Polluted Water Using Ligand-Modified Colloid-Enhanced Ultrafiltration

The objectives of this project are to determine the feasibility of and develop optimum conditions for the use of colloid-enhanced ultrafiltration (CEUF) methods to remove and recover radionuclides and associated toxic nonradioactive contaminants from polluted water. The target metal ions are uranium, plutonium, thorium, strontium and lead along with chromium (as chromate). Anionic or amphiphilic chelating agents, used in conjunction with polyelectrolyte colloids, provide a means to confer selectivity required for removal of the target cations. This project entails a comprehensive study of the effects of solution composition and filtration unit operating parameters on the separation efficiency and selectivity of ligand modified colloid-enhanced ultrafiltration (LM-CEUF) processes. Problem areas identified by the Office of Environmental Management addressed by this project include removal of hazardous ionic materials from ground water, mixed waste, and aqueous waste solutions produced during decontamination and decommissioning operations. Separation and concentration of the target ions will result in a substantial reduction in the volume of material requiring disposal or long-term storage.
Authors:
; ;
Publication Date:
OSTI Identifier:
828491
Report Number(s):
EMSP-60041--1999
R&D Project: EMSP 1999; TRN: US200427%%433
DOE Contract Number:
A107-97ER62520
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 1 Jun 1999
Research Org:
University of Oklahoma, Norman, Oklahoma; Lawrence Livermore National Lab., Livermore, CA (US)
Sponsoring Org:
USDOE Office of Environmental Management (EM) (US)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 54 ENVIRONMENTAL SCIENCES; ANIONS; CATIONS; CHELATING AGENTS; CHROMIUM; COLLOIDS; DECOMMISSIONING; DECONTAMINATION; FILTRATION; GROUND WATER; LIQUID WASTES; PLUTONIUM; RADIOISOTOPES; REMOVAL; ULTRAFILTRATION; URANIUM; WATER