| dc.creator |
Goñi Elizalde, Sara |
|
| dc.creator |
Guerrero Bustos, Ana María |
|
| dc.creator |
Lorenzo García, M.ª Paz |
|
| dc.date |
2008-06-10T11:53:43Z |
|
| dc.date |
2008-06-10T11:53:43Z |
|
| dc.date |
2006 |
|
| dc.date.accessioned |
2017-01-31T01:38:28Z |
|
| dc.date.available |
2017-01-31T01:38:28Z |
|
| dc.identifier |
Journal of Hazardous Materials B137 (2006) 1608–1617 |
|
| dc.identifier |
0304-3894 |
|
| dc.identifier |
http://hdl.handle.net/10261/4953 |
|
| dc.identifier |
10.1016/j.jhazmat.2006.04.059 |
|
| dc.identifier.uri |
http://dspace.mediu.edu.my:8181/xmlui/handle/10261/4953 |
|
| dc.description |
10 pages.-- Final full-text version of the paper available at: http://dx.doi.org/10.1016/j.jhazmat.2006.04.059. |
|
| dc.description |
The efficiency of innovative matrices for immobilizing cesium is presented in this work. The matrix formulation included the use of fly ash belite cement (FABC-2-W) and gismondine-type Na-P1 zeolite, both of which are synthesized from fly ash of coal combustion. The efficiency for immobilizing cesium is evaluated from the leaching test ANSI/ANS 16.1-1986 at the temperature of 40ºC, from which the apparent diffusion coefficient of cesium is obtained. Matrices with 100% of FABC-2-W are used as a reference. The integrity of matrices is evaluated by porosity and pore-size distribution from mercury intrusion porosimetry, X-ray diffraction and nitrogen adsorption analyses. Both matrices can be classified as good solidify systems for cesium, specially the FABC-2-W/zeolite matrix in which the replacement of 50% of belite cement by the gismondinetype
Na-P1 zeolite caused a decrease of two orders of magnitude of cesium mean Effective Diffusion Coefficient (De) (2.8e−09 cm2/s versus 2.2e−07 cm2/s, for FABC-2-W/zeolite and FABC-2-W matrices, respectively). |
|
| dc.description |
Funding for the present research was provided by the CAM under Project GR/AMB/0452/2004. |
|
| dc.description |
Peer reviewed |
|
| dc.format |
764027 bytes |
|
| dc.format |
application/pdf |
|
| dc.language |
eng |
|
| dc.publisher |
Elsevier |
|
| dc.rights |
openAccess |
|
| dc.source |
http://dx.doi.org/10.1016/j.jhazmat.2006.04.059 |
|
| dc.subject |
Fly ash belite cement |
|
| dc.subject |
Diffusion |
|
| dc.subject |
Cesium |
|
| dc.subject |
Gismondine-type Na-P1 zeolite |
|
| dc.title |
Efficiency of fly ash belite cement and zeolite matrices for immobilizing cesium |
|
| dc.type |
Artículo |
|