Na-4-mica: Cd2+, Ni2+, Co2+, Mn2+ and Zn2+ ion exchange

Tatsuya Kodama, Sridhar Komarneni

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

Selective cation exchange for divalent transition metals of Cd, Ni, Co, Mn and Zn has been investigated with the high-charge-density sodium fluorophlogopite mica, Na-4-mica. The Na-4-mica was easily and economically prepared by the crystallization from a mixture of NaF, MgO and metakaolin, the latter serves as an inexpensive aluminosilicate source. Ion exchange isotherms for Cd2+, Ni2+, Co2+, Mn2+ and Zn2+ were obtained at room temperature and the thermodynamic functions of the ion exchange equilibria were calculated. The 2Na+ → M2+ exchange with the Na-4-mica showed the following selectivity: Zn2+ > Ni2+ ≃Co2+ ≃Cd2+ > Mn2+. The interlayer structure of the hydrated Na-4-mica with the open interlayer space in the range 12.1-13.9 Å was retained during the ion-exchange reaction, indicating the possibility of the reversible 2Na+ ⇆M2+ exchange. The basic selective cation exchange studies of the high-charge-density ion exchanger are of relevance in recovery of metals from waste solution, and waste water treatment and disposal.

Original languageEnglish (US)
Pages (from-to)533-539
Number of pages7
JournalJournal of Materials Chemistry
Volume9
Issue number2
DOIs
StatePublished - 1999

Fingerprint

Mica
mica
Ion exchange
ions
Charge density
Cations
fluorophlogopite
interlayers
cations
waste water
Positive ions
exchangers
water treatment
Ion exchangers
disposal
Crystallization
Water treatment
Waste disposal
Aluminosilicates
Transition metals

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Materials Science(all)
  • Materials Chemistry

Cite this

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title = "Na-4-mica: Cd2+, Ni2+, Co2+, Mn2+ and Zn2+ ion exchange",
abstract = "Selective cation exchange for divalent transition metals of Cd, Ni, Co, Mn and Zn has been investigated with the high-charge-density sodium fluorophlogopite mica, Na-4-mica. The Na-4-mica was easily and economically prepared by the crystallization from a mixture of NaF, MgO and metakaolin, the latter serves as an inexpensive aluminosilicate source. Ion exchange isotherms for Cd2+, Ni2+, Co2+, Mn2+ and Zn2+ were obtained at room temperature and the thermodynamic functions of the ion exchange equilibria were calculated. The 2Na+ → M2+ exchange with the Na-4-mica showed the following selectivity: Zn2+ > Ni2+ ≃Co2+ ≃Cd2+ > Mn2+. The interlayer structure of the hydrated Na-4-mica with the open interlayer space in the range 12.1-13.9 {\AA} was retained during the ion-exchange reaction, indicating the possibility of the reversible 2Na+ ⇆M2+ exchange. The basic selective cation exchange studies of the high-charge-density ion exchanger are of relevance in recovery of metals from waste solution, and waste water treatment and disposal.",
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Na-4-mica : Cd2+, Ni2+, Co2+, Mn2+ and Zn2+ ion exchange. / Kodama, Tatsuya; Komarneni, Sridhar.

In: Journal of Materials Chemistry, Vol. 9, No. 2, 1999, p. 533-539.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Kodama, Tatsuya

AU - Komarneni, Sridhar

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Y1 - 1999

N2 - Selective cation exchange for divalent transition metals of Cd, Ni, Co, Mn and Zn has been investigated with the high-charge-density sodium fluorophlogopite mica, Na-4-mica. The Na-4-mica was easily and economically prepared by the crystallization from a mixture of NaF, MgO and metakaolin, the latter serves as an inexpensive aluminosilicate source. Ion exchange isotherms for Cd2+, Ni2+, Co2+, Mn2+ and Zn2+ were obtained at room temperature and the thermodynamic functions of the ion exchange equilibria were calculated. The 2Na+ → M2+ exchange with the Na-4-mica showed the following selectivity: Zn2+ > Ni2+ ≃Co2+ ≃Cd2+ > Mn2+. The interlayer structure of the hydrated Na-4-mica with the open interlayer space in the range 12.1-13.9 Å was retained during the ion-exchange reaction, indicating the possibility of the reversible 2Na+ ⇆M2+ exchange. The basic selective cation exchange studies of the high-charge-density ion exchanger are of relevance in recovery of metals from waste solution, and waste water treatment and disposal.

AB - Selective cation exchange for divalent transition metals of Cd, Ni, Co, Mn and Zn has been investigated with the high-charge-density sodium fluorophlogopite mica, Na-4-mica. The Na-4-mica was easily and economically prepared by the crystallization from a mixture of NaF, MgO and metakaolin, the latter serves as an inexpensive aluminosilicate source. Ion exchange isotherms for Cd2+, Ni2+, Co2+, Mn2+ and Zn2+ were obtained at room temperature and the thermodynamic functions of the ion exchange equilibria were calculated. The 2Na+ → M2+ exchange with the Na-4-mica showed the following selectivity: Zn2+ > Ni2+ ≃Co2+ ≃Cd2+ > Mn2+. The interlayer structure of the hydrated Na-4-mica with the open interlayer space in the range 12.1-13.9 Å was retained during the ion-exchange reaction, indicating the possibility of the reversible 2Na+ ⇆M2+ exchange. The basic selective cation exchange studies of the high-charge-density ion exchanger are of relevance in recovery of metals from waste solution, and waste water treatment and disposal.

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