Comparison of ion exchange and Donnan equilibrium models for the pH-dependent adsorption of sodium and calcium ions onto kraft wood pulp fibers

W. Yantasee; G. L. Rorrer

doi:10.1081/WCT-120015523

Comparison of ion exchange and Donnan equilibrium models for the pH-dependent adsorption of sodium and calcium ions onto kraft wood pulp fibers

W. Yantasee, G. L. Rorrer

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

19 Scopus citations

Abstract

The ion exchange and Donnan equilibrium models were compared for predicting the multi-component adsorption of hydrogen, sodium and calcium ions onto kraft wood pulp fibers. At pH 2.7-6, the Donnan model predicted the adsorption of Na and Ca ions onto both bleached and unbleached wood fibers better than the ion exchange model. The Donnan model assumed a non-site specific distribution of metal ions between charged fiber and external solution phases and and a carboxylate site specific adsorption of hydrogen ions.

Original language	English (US)
Pages (from-to)	157-185
Number of pages	29
Journal	Journal of Wood Chemistry and Technology
Volume	22
Issue number	2-3
DOIs	https://doi.org/10.1081/WCT-120015523
State	Published - 2002
Externally published	Yes

Keywords

Donnan
Ion exchange
Nonprocess element
Wood pulp

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Science(all)

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10.1081/WCT-120015523

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title = "Comparison of ion exchange and Donnan equilibrium models for the pH-dependent adsorption of sodium and calcium ions onto kraft wood pulp fibers",

abstract = "The ion exchange and Donnan equilibrium models were compared for predicting the multi-component adsorption of hydrogen, sodium and calcium ions onto kraft wood pulp fibers. At pH 2.7-6, the Donnan model predicted the adsorption of Na and Ca ions onto both bleached and unbleached wood fibers better than the ion exchange model. The Donnan model assumed a non-site specific distribution of metal ions between charged fiber and external solution phases and and a carboxylate site specific adsorption of hydrogen ions.",

keywords = "Donnan, Ion exchange, Nonprocess element, Wood pulp",

author = "W. Yantasee and Rorrer, {G. L.}",

note = "Funding Information: The authors gratefully acknowledge support of this research by the U.S. Department of Energy Agenda 2020 Program under Project #DE-FC07-961D13441.",

year = "2002",

doi = "10.1081/WCT-120015523",

language = "English (US)",

volume = "22",

pages = "157--185",

journal = "Journal of Wood Chemistry and Technology",

issn = "0277-3813",

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T1 - Comparison of ion exchange and Donnan equilibrium models for the pH-dependent adsorption of sodium and calcium ions onto kraft wood pulp fibers

AU - Yantasee, W.

AU - Rorrer, G. L.

N1 - Funding Information: The authors gratefully acknowledge support of this research by the U.S. Department of Energy Agenda 2020 Program under Project #DE-FC07-961D13441.

PY - 2002

Y1 - 2002

N2 - The ion exchange and Donnan equilibrium models were compared for predicting the multi-component adsorption of hydrogen, sodium and calcium ions onto kraft wood pulp fibers. At pH 2.7-6, the Donnan model predicted the adsorption of Na and Ca ions onto both bleached and unbleached wood fibers better than the ion exchange model. The Donnan model assumed a non-site specific distribution of metal ions between charged fiber and external solution phases and and a carboxylate site specific adsorption of hydrogen ions.

AB - The ion exchange and Donnan equilibrium models were compared for predicting the multi-component adsorption of hydrogen, sodium and calcium ions onto kraft wood pulp fibers. At pH 2.7-6, the Donnan model predicted the adsorption of Na and Ca ions onto both bleached and unbleached wood fibers better than the ion exchange model. The Donnan model assumed a non-site specific distribution of metal ions between charged fiber and external solution phases and and a carboxylate site specific adsorption of hydrogen ions.

KW - Donnan

KW - Ion exchange

KW - Nonprocess element

KW - Wood pulp

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DO - 10.1081/WCT-120015523

M3 - Article

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SN - 0277-3813

VL - 22

SP - 157

EP - 185

JO - Journal of Wood Chemistry and Technology

JF - Journal of Wood Chemistry and Technology

IS - 2-3

ER -

Comparison of ion exchange and Donnan equilibrium models for the pH-dependent adsorption of sodium and calcium ions onto kraft wood pulp fibers

Abstract

Keywords

ASJC Scopus subject areas

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