2011 Fiscal Year Final Research Report
Development of High-Level Nuclear Waste Glasses using Phosphate Glass Anomaly
| Project/Area Number |
21560848
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Earth system and resources enginnering
|
|---|
| Research Institution | Kogakuin University |
|---|
Principal Investigator |
OKURA Toshinori 工学院大学, 工学部・環境エネルギー化学科, 教授 (70255610)
|
|---|
| Project Period (FY) |
2009 – 2011
|
| Keywords | 高レベル放射性廃棄物 / ガラス固化 / リン酸塩ガラス異常現象 |
|---|
| Research Abstract |
Leaching behavior and structure of magnesium phosphate glasses containing 45-55 mol% MgO incorporated with simulated high-level nuclear waste(HLW) were studied. The gross leach rate of the glass waste form containing 50 mol% MgO and 45 mass% simulated HLW is of the order of 10^<-6> g/cm^<2.> day at 90℃, which is small enough as compared with the corresponding release from a currently used borosilicate glass waste form. The isolated ions such as dimeric(P_2O_7)^<4-> and monomeric(PO_4)^<3-> increase as increasing the incorporating amount of the simulated HLW. The changes in properties can be attributed to the structure changes owing to the incorporation of the simulated HLW.
|
