title: Utilization of different crown ethers impregnated polymeric resin for treatment of low level liquid radioactive waste by column chromatography.
abstract: The main goal of this study was to find a novel impregnated resin as an alternative for the conventional resin (KY-2 and AN-31) used for low and intermediate level liquid radioactive waste treatment. Novel impregnated ion exchangers namely, poly (acrylamide-acrylic acid-acrylonitril)-N,N'-methylenedi-acrylamide-4,4'(5')di-t-butylbenzo 18 crown 6 [P(AM-AA-AN)-DAM/DtBB18C6], poly (acrylamide-acrylic acid-acrylonitril)-N,N'-methylenediacrylamide-dibenzo 18 crown 6 [P(AM-AA-AN)-DAM/DB18C6], and poly (acrylamide-acrylic acid-acrylonitril)-N,N'-methylenediacrylamide-18 crown 6 [P(AM-AA-AN)-DAM/18C6] were prepared and their removal efficiency of some radionuclides was investigated. Preliminary batch experiments were performed in order to study the influence of the different derivatives of 18 crown 6 on the characteristic removal performance. Separation of (134)Cs, (60)Co, (65)Zn and ((152+154))Eu radionuclides from low level liquid radioactive waste was investigated by using column chromatography with P(AM-AA-AN)-DAM/DtBB18C6 and metal salt solutions traced with the corresponding radionuclides. Breakthrough data was obtained in a fixed bed column at room temperature (298K) using different bed heights and flow rates. The breakthrough capacities were found to be 94.7, 83.3, 58.7, 43.1 (mg/g) for (60)Co, (65)Zn, (134)Cs, and ((152+154))Eu, respectively. Pre-concentration and separation of all radionuclides under study have been carried out using different concentration of nitric and/or oxalic acids.
authors: Analytical Chemistry and Control Department, Hot Laboratories and Waste Management Center, Atomic Energy Authority, Post Code 13759, Abu Zaabal, Cairo, Egypt. dr.m.f.attallah@gmail.com
authors: M F
authors: MF
authors: Attallah
authors: E H
authors: EH
authors: Borai
authors: M A
authors: MA
authors: Hilal
authors: F A
authors: FA
authors: Shehata
authors: M M
authors: MM
authors: Abo-Aly
mesh_terms: D002852:Chromatography, Ion Exchange / Q000379:methods*; D043844:Crown Ethers / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D011850:Radioactive Waste; D011868:Radioisotopes / Q000302:isolation & purification*
chemical_list: D043844:Crown Ethers; D011108:Polymers; D011850:Radioactive Waste; D011868:Radioisotopes