The interfacial processes between calcium-bentonite zinc ion

N. Nagy, J. Kónya

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The interfacial reaction between calcium-bentonite zinc ion was studied by a radioisotopic tracer method. Both the quantity of zinc ions incorporated into the solid and the quantity of calcium ions leaving the solid were determined. A comparison of the two quantities and the Langmuir representation obtained suggest that other processes can occur besides ion exchange. These processes were separated; ion exchange and adsorption isotherms were constructed, and the isotherm parameters determined. The real ion exchange process was evaluated on the basis of the law of mass action as well. The equilibrium constant of the process and the surface activity coefficients of calcium and zinc ions were determined. The variation of the surface activity coefficient as a function of surface concentration is explained by supposing exchange sites of different binding energy.

Original languageEnglish
Pages (from-to)223-235
Number of pages13
JournalColloids and Surfaces
Volume32
Issue numberC
DOIs
Publication statusPublished - 1988

Fingerprint

Bentonite
Calcium
Zinc
Ion exchange
Activity coefficients
Ions
Equilibrium constants
Surface chemistry
Binding energy
Adsorption isotherms
Isotherms

ASJC Scopus subject areas

  • Engineering(all)

Cite this

The interfacial processes between calcium-bentonite zinc ion. / Nagy, N.; Kónya, J.

In: Colloids and Surfaces, Vol. 32, No. C, 1988, p. 223-235.

Research output: Contribution to journalArticle

@article{a9d719b45c8843b5b04095f465cdb0da,
title = "The interfacial processes between calcium-bentonite zinc ion",
abstract = "The interfacial reaction between calcium-bentonite zinc ion was studied by a radioisotopic tracer method. Both the quantity of zinc ions incorporated into the solid and the quantity of calcium ions leaving the solid were determined. A comparison of the two quantities and the Langmuir representation obtained suggest that other processes can occur besides ion exchange. These processes were separated; ion exchange and adsorption isotherms were constructed, and the isotherm parameters determined. The real ion exchange process was evaluated on the basis of the law of mass action as well. The equilibrium constant of the process and the surface activity coefficients of calcium and zinc ions were determined. The variation of the surface activity coefficient as a function of surface concentration is explained by supposing exchange sites of different binding energy.",
author = "N. Nagy and J. K{\'o}nya",
year = "1988",
doi = "10.1016/0166-6622(88)80018-0",
language = "English",
volume = "32",
pages = "223--235",
journal = "Colloids and Surfaces",
issn = "0166-6622",
publisher = "Elsevier BV",
number = "C",

}

TY - JOUR

T1 - The interfacial processes between calcium-bentonite zinc ion

AU - Nagy, N.

AU - Kónya, J.

PY - 1988

Y1 - 1988

N2 - The interfacial reaction between calcium-bentonite zinc ion was studied by a radioisotopic tracer method. Both the quantity of zinc ions incorporated into the solid and the quantity of calcium ions leaving the solid were determined. A comparison of the two quantities and the Langmuir representation obtained suggest that other processes can occur besides ion exchange. These processes were separated; ion exchange and adsorption isotherms were constructed, and the isotherm parameters determined. The real ion exchange process was evaluated on the basis of the law of mass action as well. The equilibrium constant of the process and the surface activity coefficients of calcium and zinc ions were determined. The variation of the surface activity coefficient as a function of surface concentration is explained by supposing exchange sites of different binding energy.

AB - The interfacial reaction between calcium-bentonite zinc ion was studied by a radioisotopic tracer method. Both the quantity of zinc ions incorporated into the solid and the quantity of calcium ions leaving the solid were determined. A comparison of the two quantities and the Langmuir representation obtained suggest that other processes can occur besides ion exchange. These processes were separated; ion exchange and adsorption isotherms were constructed, and the isotherm parameters determined. The real ion exchange process was evaluated on the basis of the law of mass action as well. The equilibrium constant of the process and the surface activity coefficients of calcium and zinc ions were determined. The variation of the surface activity coefficient as a function of surface concentration is explained by supposing exchange sites of different binding energy.

UR - http://www.scopus.com/inward/record.url?scp=0024048140&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024048140&partnerID=8YFLogxK

U2 - 10.1016/0166-6622(88)80018-0

DO - 10.1016/0166-6622(88)80018-0

M3 - Article

VL - 32

SP - 223

EP - 235

JO - Colloids and Surfaces

JF - Colloids and Surfaces

SN - 0166-6622

IS - C

ER -