干旱区生态环境知识资源中心(Arid): Chemical and radiation stability of a proprietary cesium ion exchange material manufactured from WWL membrane and SuperLig{reg

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DOI	10.2172/383552
报告编号	PNNL--11328
来源ID	OSTI_ID: 383552
	Chemical and radiation stability of a proprietary cesium ion exchange material manufactured from WWL membrane and SuperLig{reg_sign} 644
	Brown, G.N.; Carson, K.J.; DesChane, J.R.; Elovich, R.J.; Berry, P.K.
英文摘要	Pretreatment of nuclear process wastes for ion exchange removal of Cs and other radionuclides is one way to minimize amount of high-level radioactive waste at Hanford. This study evaluated Cs-selective SuperLig{reg_sign}644 (IBC Advanced Technologies, American Fork UT) entrapped in a proprietary WWL web membrane (3M) for chemical/radiation stability in simulated caustic neutralized current acid waste (NCAW), 0.5M HNO{sub 3}, water, and air. After exposure up to 2.0E+09 rad, the material was evaluated for Cs uptake in 5M sodium NCAW simulants with varying Cs contents. Radiolytic stability appears to be sufficient for ion exchange pretreatment of radioactive Cs: essentially no decrease in Cs selectivity or loading (Kd) was observed during {sup 60}Cs gamma irradiation in water or 0.5M HNO{sub 3} up to 1.0E+09 rad. Cs Kd decreased by a factor of 2 after 2.0E+09 rad exposure. Cs Kd did not change during irradiation in 5M NCAW or ambient air up to 1.0E+08 rad, but decreased by more than an order of magnitude between 1.0E+08 and 2.0E+09 rad (not typical of process conditions). Chemical stability under caustic conditions is lower than in air or under neutral/acidic conditions. Results indicate that this material is less stable in caustic solution irrespective of radiation exposure. Samples of the membrane retained their physical form throughout the entire experiment and were only slightly brittle after exposure to 2.0E+09 rad. (The material evaluated was a finely ground (400 mesh) particulate engineered to form a polymeric fiber (WWL), not the macroscopic form of SuperLig{reg_sign} 644 resin (20 to 50 mesh).)
出版年	1996
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	05 NUCLEAR FUELS ; 40 CHEMISTRY ; ION EXCHANGE MATERIALS ; PERFORMANCE ; RADIATION EFFECTS ; STABILITY ; CESIUM ; ION EXCHANGE ; MEMBRANES ; GAMMA RADIATION ; PH VALUE ; RADIOACTIVE WASTE PROCESSING ; RADIOACTIVE WASTES ; SIMULATION
URL	http://www.osti.gov/scitech/servlets/purl/383552
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/266675
推荐引用方式 GB/T 7714	Brown, G.N.,Carson, K.J.,DesChane, J.R.,et al. Chemical and radiation stability of a proprietary cesium ion exchange material manufactured from WWL membrane and SuperLig{reg_sign} 644,1996.