Investigation of complexation of thorium by humic acid using chemically immobilized humic acid on silica gel

Gy Szabó; J. Guczi; P. Reiller; H. Geckeis; R. A. Bulman

doi:10.1524/ract.2006.94.9-11.553

Investigation of complexation of thorium by humic acid using chemically immobilized humic acid on silica gel

Gy Szabó^*, J. Guczi, P. Reiller, H. Geckeis, R. A. Bulman

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

To model the influence of humic substances on the migration of tetravalent actinides (Pu, Np, U) in and around nuclear waste repositories we have immobilized humic acid on silica gel and investigated its complexation of Th(IV). It is anticipated that this material might serve as a geochemical model of the humate-coated minerals that are likely to be present in the vicinity of the repositories. The binding of Th(IV) by the immobilized humic acid was examined at pH 4, 5 and 6 in 0.1 mol L^-1 NaClO₄ by the batch method. Th(IV)-humate conditional interaction constants have been evaluated from data obtained from these experiments by using non-linear regression of binding isotherms.

Original language	English
Pages (from-to)	553-557
Number of pages	5
Journal	Radiochimica Acta
Volume	94
Issue number	9-11
DOIs	https://doi.org/10.1524/ract.2006.94.9-11.553
Publication status	Published - 2006

Bibliographical note

Funding Information:
Acknowledgment. This work was supported by European Commission, EC Contract No. FIKW-CT-2001-00128 (HUPA) and FP6-516514 (FUNMIG).

Keywords

Conditional interaction constant (β)
Humic acid
Thorium

Access to Document

10.1524/ract.2006.94.9-11.553

Cite this

@article{af234a905aa7465cab047cab4dd7f22a,

title = "Investigation of complexation of thorium by humic acid using chemically immobilized humic acid on silica gel",

abstract = "To model the influence of humic substances on the migration of tetravalent actinides (Pu, Np, U) in and around nuclear waste repositories we have immobilized humic acid on silica gel and investigated its complexation of Th(IV). It is anticipated that this material might serve as a geochemical model of the humate-coated minerals that are likely to be present in the vicinity of the repositories. The binding of Th(IV) by the immobilized humic acid was examined at pH 4, 5 and 6 in 0.1 mol L-1 NaClO4 by the batch method. Th(IV)-humate conditional interaction constants have been evaluated from data obtained from these experiments by using non-linear regression of binding isotherms.",

keywords = "Conditional interaction constant (β), Humic acid, Thorium",

author = "Gy Szab{\'o} and J. Guczi and P. Reiller and H. Geckeis and Bulman, {R. A.}",

note = "Funding Information: Acknowledgment. This work was supported by European Commission, EC Contract No. FIKW-CT-2001-00128 (HUPA) and FP6-516514 (FUNMIG).",

year = "2006",

doi = "10.1524/ract.2006.94.9-11.553",

language = "English",

volume = "94",

pages = "553--557",

journal = "Radiochimica Acta",

issn = "0033-8230",

publisher = "Walter de Gruyter GmbH",

number = "9-11",

}

TY - JOUR

T1 - Investigation of complexation of thorium by humic acid using chemically immobilized humic acid on silica gel

AU - Szabó, Gy

AU - Guczi, J.

AU - Reiller, P.

AU - Geckeis, H.

AU - Bulman, R. A.

N1 - Funding Information: Acknowledgment. This work was supported by European Commission, EC Contract No. FIKW-CT-2001-00128 (HUPA) and FP6-516514 (FUNMIG).

PY - 2006

Y1 - 2006

N2 - To model the influence of humic substances on the migration of tetravalent actinides (Pu, Np, U) in and around nuclear waste repositories we have immobilized humic acid on silica gel and investigated its complexation of Th(IV). It is anticipated that this material might serve as a geochemical model of the humate-coated minerals that are likely to be present in the vicinity of the repositories. The binding of Th(IV) by the immobilized humic acid was examined at pH 4, 5 and 6 in 0.1 mol L-1 NaClO4 by the batch method. Th(IV)-humate conditional interaction constants have been evaluated from data obtained from these experiments by using non-linear regression of binding isotherms.

AB - To model the influence of humic substances on the migration of tetravalent actinides (Pu, Np, U) in and around nuclear waste repositories we have immobilized humic acid on silica gel and investigated its complexation of Th(IV). It is anticipated that this material might serve as a geochemical model of the humate-coated minerals that are likely to be present in the vicinity of the repositories. The binding of Th(IV) by the immobilized humic acid was examined at pH 4, 5 and 6 in 0.1 mol L-1 NaClO4 by the batch method. Th(IV)-humate conditional interaction constants have been evaluated from data obtained from these experiments by using non-linear regression of binding isotherms.

KW - Conditional interaction constant (β)

KW - Humic acid

KW - Thorium

UR - http://www.scopus.com/inward/record.url?scp=33845241077&partnerID=8YFLogxK

U2 - 10.1524/ract.2006.94.9-11.553

DO - 10.1524/ract.2006.94.9-11.553

M3 - Article

AN - SCOPUS:33845241077

SN - 0033-8230

VL - 94

SP - 553

EP - 557

JO - Radiochimica Acta

JF - Radiochimica Acta

IS - 9-11

ER -

Investigation of complexation of thorium by humic acid using chemically immobilized humic acid on silica gel

Abstract

Bibliographical note

Keywords

Access to Document

Other files and links

Fingerprint

Cite this