Leaching of Cs-137 from spent ion exchange resins in cement-bentonite clay matrix
Abstract
The leaching rate of Cs-137 from the spent cation exchange resins in cement-bentonite matrix has been studied. The solidification matrix was a standard Portland cement mixed with 290350 (kg/m(3)) spent cation exchange resins, with or without 2-5% of bentonite clay. The leaching rates from the cement-bentonite matrix for Cs-137:(3.2- 6.6) x 10(-4)(cm/d), after 125 days were measured. From the leaching data the apparent diffusivity of cesium in cement-bentonite clay matrix with a waste load of 290-350 (kg/m(3)) spent cation exchange resins was measured for Cs-137: (1,5- 26) x 10(-5)(cm(2)/d), after 125 days. The results presented in this paper are part of the results obtained in a 20-year mortar and concrete testing project, which will influence the design of radioactive waste management for a future radioactive waste disposal center.
Keywords:
leaching / cement / bentonite / matrix / cation exchange resinsSource:
Acta Chimica Slovenica, 2003, 50, 3, 593-+Collections
Institution/Community
VinčaTY - JOUR AU - Plećaš, Ilija B. PY - 2003 UR - https://vinar.vin.bg.ac.rs/handle/123456789/2666 AB - The leaching rate of Cs-137 from the spent cation exchange resins in cement-bentonite matrix has been studied. The solidification matrix was a standard Portland cement mixed with 290350 (kg/m(3)) spent cation exchange resins, with or without 2-5% of bentonite clay. The leaching rates from the cement-bentonite matrix for Cs-137:(3.2- 6.6) x 10(-4)(cm/d), after 125 days were measured. From the leaching data the apparent diffusivity of cesium in cement-bentonite clay matrix with a waste load of 290-350 (kg/m(3)) spent cation exchange resins was measured for Cs-137: (1,5- 26) x 10(-5)(cm(2)/d), after 125 days. The results presented in this paper are part of the results obtained in a 20-year mortar and concrete testing project, which will influence the design of radioactive waste management for a future radioactive waste disposal center. T2 - Acta Chimica Slovenica T1 - Leaching of Cs-137 from spent ion exchange resins in cement-bentonite clay matrix VL - 50 IS - 3 SP - 593 EP - + UR - https://hdl.handle.net/21.15107/rcub_vinar_2666 ER -
@article{ author = "Plećaš, Ilija B.", year = "2003", abstract = "The leaching rate of Cs-137 from the spent cation exchange resins in cement-bentonite matrix has been studied. The solidification matrix was a standard Portland cement mixed with 290350 (kg/m(3)) spent cation exchange resins, with or without 2-5% of bentonite clay. The leaching rates from the cement-bentonite matrix for Cs-137:(3.2- 6.6) x 10(-4)(cm/d), after 125 days were measured. From the leaching data the apparent diffusivity of cesium in cement-bentonite clay matrix with a waste load of 290-350 (kg/m(3)) spent cation exchange resins was measured for Cs-137: (1,5- 26) x 10(-5)(cm(2)/d), after 125 days. The results presented in this paper are part of the results obtained in a 20-year mortar and concrete testing project, which will influence the design of radioactive waste management for a future radioactive waste disposal center.", journal = "Acta Chimica Slovenica", title = "Leaching of Cs-137 from spent ion exchange resins in cement-bentonite clay matrix", volume = "50", number = "3", pages = "593-+", url = "https://hdl.handle.net/21.15107/rcub_vinar_2666" }
Plećaš, I. B.. (2003). Leaching of Cs-137 from spent ion exchange resins in cement-bentonite clay matrix. in Acta Chimica Slovenica, 50(3), 593-+. https://hdl.handle.net/21.15107/rcub_vinar_2666
Plećaš IB. Leaching of Cs-137 from spent ion exchange resins in cement-bentonite clay matrix. in Acta Chimica Slovenica. 2003;50(3):593-+. https://hdl.handle.net/21.15107/rcub_vinar_2666 .
Plećaš, Ilija B., "Leaching of Cs-137 from spent ion exchange resins in cement-bentonite clay matrix" in Acta Chimica Slovenica, 50, no. 3 (2003):593-+, https://hdl.handle.net/21.15107/rcub_vinar_2666 .