Application of the NICADonnan model for proton, copper and uranyl binding to humic acid

T. Saito; S. Nagasaki; S. Tanaka; L.K. Koopal

doi:10.1524/ract.92.9.567.54984

Application of the NICADonnan model for proton, copper and uranyl binding to humic acid

T. Saito, S. Nagasaki, S. Tanaka, L.K. Koopal

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Abstract

Humic acids are natural organic materials that play an important role in the migration of heavy metal and actinide ions in aquatic and soil systems. In the present study, the binding of protons, copper ions and uranyl ions to the purified Aldrich humic acid (PAHA) is investigated and the results are modeled with the Non-Ideal Competitive Adsorption (NICA) model extended with electrostatic interactions according to the Donnan model (NICA-Donnan model). The NICA part of the model enables one to describe the competitive ion binding to a heterogeneous substrate taking into account a different stoichiometry per ion. The NICA-Donnan model can describe the binding of the ions to PAHA in large concentration ranges (3

Original language	English
Pages (from-to)	567-574
Journal	Radiochimica Acta
Volume	92
Issue number	9-11
DOIs	https://doi.org/10.1524/ract.92.9.567.54984
Publication status	Published - 2004

Keywords

metal-ion binding
fulvic-acids
humate interactions
substances
complexation
adsorption
parameters
heterogeneity
uranium(vi)
goethite

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title = "Application of the NICADonnan model for proton, copper and uranyl binding to humic acid",

abstract = "Humic acids are natural organic materials that play an important role in the migration of heavy metal and actinide ions in aquatic and soil systems. In the present study, the binding of protons, copper ions and uranyl ions to the purified Aldrich humic acid (PAHA) is investigated and the results are modeled with the Non-Ideal Competitive Adsorption (NICA) model extended with electrostatic interactions according to the Donnan model (NICA-Donnan model). The NICA part of the model enables one to describe the competitive ion binding to a heterogeneous substrate taking into account a different stoichiometry per ion. The NICA-Donnan model can describe the binding of the ions to PAHA in large concentration ranges (3",

keywords = "metal-ion binding, fulvic-acids, humate interactions, substances, complexation, adsorption, parameters, heterogeneity, uranium(vi), goethite",

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TY - JOUR

T1 - Application of the NICADonnan model for proton, copper and uranyl binding to humic acid

AU - Saito, T.

AU - Nagasaki, S.

AU - Tanaka, S.

AU - Koopal, L.K.

PY - 2004

Y1 - 2004

N2 - Humic acids are natural organic materials that play an important role in the migration of heavy metal and actinide ions in aquatic and soil systems. In the present study, the binding of protons, copper ions and uranyl ions to the purified Aldrich humic acid (PAHA) is investigated and the results are modeled with the Non-Ideal Competitive Adsorption (NICA) model extended with electrostatic interactions according to the Donnan model (NICA-Donnan model). The NICA part of the model enables one to describe the competitive ion binding to a heterogeneous substrate taking into account a different stoichiometry per ion. The NICA-Donnan model can describe the binding of the ions to PAHA in large concentration ranges (3

AB - Humic acids are natural organic materials that play an important role in the migration of heavy metal and actinide ions in aquatic and soil systems. In the present study, the binding of protons, copper ions and uranyl ions to the purified Aldrich humic acid (PAHA) is investigated and the results are modeled with the Non-Ideal Competitive Adsorption (NICA) model extended with electrostatic interactions according to the Donnan model (NICA-Donnan model). The NICA part of the model enables one to describe the competitive ion binding to a heterogeneous substrate taking into account a different stoichiometry per ion. The NICA-Donnan model can describe the binding of the ions to PAHA in large concentration ranges (3

KW - metal-ion binding

KW - fulvic-acids

KW - humate interactions

KW - substances

KW - complexation

KW - adsorption

KW - parameters

KW - heterogeneity

KW - uranium(vi)

KW - goethite

U2 - 10.1524/ract.92.9.567.54984

DO - 10.1524/ract.92.9.567.54984

M3 - Article

SN - 0033-8230

VL - 92

SP - 567

EP - 574

JO - Radiochimica Acta

JF - Radiochimica Acta

IS - 9-11

ER -

Application of the NICADonnan model for proton, copper and uranyl binding to humic acid

Abstract

Keywords

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