The influence of Mg2+ on the adsorption of fluoride by hydrous oxides in seawater

P. D. Rude; R. C. Aller

doi:10.2475/ajs.293.1.1

The influence of Mg²⁺ on the adsorption of fluoride by hydrous oxides in seawater

P. D. Rude
, R. C. Aller

Landau Associates, Inc.

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

22 Scopus citations

Abstract

Experiments demonstrate that F^- adsorption in seawater is predominantly reversible and dependent on formation of MgF⁺ in solution and adsorption of free F^- and co-adsorption of Mg²⁺ and F^- at particle surfaces. At pH values where little free F^- adsorbs without Mg²⁺ present (generally pH ≥ ZPC), F^- adsorption by FeOOH, δMnO₂, and SiO₂.nH₂O is greatly enhanced by the presence of Mg²⁺. The enhancement of F^- adsorption correlates with the adsorption of Mg²⁺. At lower pH, where Mg²⁺ adsorption is minimal, F^- adsorption is reduced in the presence of Mg²⁺ compared to Mg²⁺-free solutions. -from Authors

Original language	English
Pages (from-to)	1-24
Number of pages	24
Journal	American Journal of Science
Volume	293
Issue number	1
DOIs	https://doi.org/10.2475/ajs.293.1.1
State	Published - 1993

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title = "The influence of Mg2+ on the adsorption of fluoride by hydrous oxides in seawater",

abstract = "Experiments demonstrate that F- adsorption in seawater is predominantly reversible and dependent on formation of MgF+ in solution and adsorption of free F- and co-adsorption of Mg 2+ and F- at particle surfaces. At pH values where little free F- adsorbs without Mg2+ present (generally pH ≥ ZPC), F- adsorption by FeOOH, δMnO2, and SiO2.nH2O is greatly enhanced by the presence of Mg2+. The enhancement of F- adsorption correlates with the adsorption of Mg2+. At lower pH, where Mg2+ adsorption is minimal, F- adsorption is reduced in the presence of Mg2+ compared to Mg2+-free solutions. -from Authors",

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year = "1993",

doi = "10.2475/ajs.293.1.1",

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T1 - The influence of Mg2+ on the adsorption of fluoride by hydrous oxides in seawater

AU - Rude, P. D.

AU - Aller, R. C.

PY - 1993

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N2 - Experiments demonstrate that F- adsorption in seawater is predominantly reversible and dependent on formation of MgF+ in solution and adsorption of free F- and co-adsorption of Mg 2+ and F- at particle surfaces. At pH values where little free F- adsorbs without Mg2+ present (generally pH ≥ ZPC), F- adsorption by FeOOH, δMnO2, and SiO2.nH2O is greatly enhanced by the presence of Mg2+. The enhancement of F- adsorption correlates with the adsorption of Mg2+. At lower pH, where Mg2+ adsorption is minimal, F- adsorption is reduced in the presence of Mg2+ compared to Mg2+-free solutions. -from Authors

AB - Experiments demonstrate that F- adsorption in seawater is predominantly reversible and dependent on formation of MgF+ in solution and adsorption of free F- and co-adsorption of Mg 2+ and F- at particle surfaces. At pH values where little free F- adsorbs without Mg2+ present (generally pH ≥ ZPC), F- adsorption by FeOOH, δMnO2, and SiO2.nH2O is greatly enhanced by the presence of Mg2+. The enhancement of F- adsorption correlates with the adsorption of Mg2+. At lower pH, where Mg2+ adsorption is minimal, F- adsorption is reduced in the presence of Mg2+ compared to Mg2+-free solutions. -from Authors

UR - https://www.scopus.com/pages/publications/0027449699

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DO - 10.2475/ajs.293.1.1

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JF - American Journal of Science

IS - 1

ER -

The influence of Mg²⁺ on the adsorption of fluoride by hydrous oxides in seawater

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