Details
| Original language | English |
|---|---|
| Pages (from-to) | [d]297-304 |
| Journal | Materials Research Society Symposium - Proceedings |
| Volume | 506 |
| Publication status | Published - 1997 |
| Event | 1997 Symposium on Scientific Basis for Nuclear Waste Management XXI - Davos, Switz Duration: 28 Sept 1997 → 3 Oct 1997 |
Abstract
Sorption experiments were performed with iodide, cesium and strontium ions on MX-80 Wyoming-bentonite treated with hexadecylpyridinium (HDPy+) in amounts equivalent to 0.2-4.0 times the cation exchange capacity (CEC) using 125I-, 134Cs+ and 85Sr2+ as tracers. In HDPy-bentonite, iodide exhibited increasing adsorption, while cesium and strontium ions showed decreasing adsorption with increasing organophilicity. It was also found that the Cs+ affinity to original and HDPy-bentonite was considerably higher than that of Sr2+ ions. HDPy+ uptake in increasing concentrations resulted in a pronounced expansion of the basal spacings (d002 reflex at 2.78 nm) and in a change of the negative particle surface charge to positive values.
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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In: Materials Research Society Symposium - Proceedings, Vol. 506, 1997, p. [d]297-304.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Cation and anion sorption capability of organophilic bentonite
AU - Bors, J.
AU - Dultz, St
AU - Riebe, B.
N1 - Funding information: The studies on organophilic bentonite are funded by the Nuclear Fission Safety Programme of the European Commission under the Project No. FI4WCT950012. The skilled thechnical assistance of Mr. K.-H. Iwannek is gratefully acknowledged.
PY - 1997
Y1 - 1997
N2 - Sorption experiments were performed with iodide, cesium and strontium ions on MX-80 Wyoming-bentonite treated with hexadecylpyridinium (HDPy+) in amounts equivalent to 0.2-4.0 times the cation exchange capacity (CEC) using 125I-, 134Cs+ and 85Sr2+ as tracers. In HDPy-bentonite, iodide exhibited increasing adsorption, while cesium and strontium ions showed decreasing adsorption with increasing organophilicity. It was also found that the Cs+ affinity to original and HDPy-bentonite was considerably higher than that of Sr2+ ions. HDPy+ uptake in increasing concentrations resulted in a pronounced expansion of the basal spacings (d002 reflex at 2.78 nm) and in a change of the negative particle surface charge to positive values.
AB - Sorption experiments were performed with iodide, cesium and strontium ions on MX-80 Wyoming-bentonite treated with hexadecylpyridinium (HDPy+) in amounts equivalent to 0.2-4.0 times the cation exchange capacity (CEC) using 125I-, 134Cs+ and 85Sr2+ as tracers. In HDPy-bentonite, iodide exhibited increasing adsorption, while cesium and strontium ions showed decreasing adsorption with increasing organophilicity. It was also found that the Cs+ affinity to original and HDPy-bentonite was considerably higher than that of Sr2+ ions. HDPy+ uptake in increasing concentrations resulted in a pronounced expansion of the basal spacings (d002 reflex at 2.78 nm) and in a change of the negative particle surface charge to positive values.
UR - http://www.scopus.com/inward/record.url?scp=0031387955&partnerID=8YFLogxK
U2 - 10.1557/proc-506-297
DO - 10.1557/proc-506-297
M3 - Conference article
AN - SCOPUS:0031387955
VL - 506
SP - [d]297-304
JO - Materials Research Society Symposium - Proceedings
JF - Materials Research Society Symposium - Proceedings
SN - 0272-9172
T2 - 1997 Symposium on Scientific Basis for Nuclear Waste Management XXI
Y2 - 28 September 1997 through 3 October 1997
ER -