Evaluation study on properties of isohexyl-BTP/SiO2-P resin for direct separation of trivalent minor actinides from HLLW
Liu, R; Wei, Y; Xu, Y; Usuda, S; Kim, S; Yamazaki, H; Ishii, K
| HERO ID | 1555272 |
|---|---|
| In Press | No |
| Year | 2012 |
| Title | Evaluation study on properties of isohexyl-BTP/SiO2-P resin for direct separation of trivalent minor actinides from HLLW |
| Authors | Liu, R; Wei, Y; Xu, Y; Usuda, S; Kim, S; Yamazaki, H; Ishii, K |
| Journal | Journal of Radioanalytical and Nuclear Chemistry |
| Volume | 292 |
| Issue | 2 |
| Page Numbers | 537-544 |
| Abstract | In order to develop a direct separation process for trivalent minor actinides from fission products in high level liquid waste (HLLW) by extraction chromatography, a novel macroporous silica-based 2,6-bis(5,6-diisohexyl)-1,2,4-triazin-3-yl) pyridine resin (isohexyl-BTP/SiO2-P resin) was prepared. The content of isohexyl-BTP extractant in the resin was as high as 33.3 wt%. The resin exhibited much higher adsorption affinity for Am (III) in 2-3 M (mol/L) HNO3 solution over U and FP which are contained in HLLW. The kinetic data were analyzed using pseudo-second-order equation. The results suggested that the Eu(III), Gd (III), and Dy(III) adsorption was well explained by the pseudo-second-order equation. Quantitative desorption for adsorbed elements was achieved by using H2O or thiourea as eluting agents. However, the kinetics of adsorption and desorption were rather slow and this drawback needs to be resolved. Stability of the resin against HNO3 was also examined. It was found that the resin was considerably stable against <= 4 M HNO3 solution for the reasons of an extremely small leakage of the extractant into the solution from the resin and the adsorption performance keeping for rare earths in 3 M HNO3 solution. |
| Doi | 10.1007/s10967-012-1631-3 |
| Wosid | WOS:000305230100009 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Source: Web of Science WOS:000305230100009 |
| Is Public | Yes |
| Keyword | HLLW; Minor actinides; Rare earths; Extraction chromatography; isoHexyl-BTP/SiO2-P; Fission products |