In situ study of the specific adsorption of HSO4 -/SO4 2- ions on hematite by radiotracer technique

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22 Citations (Scopus)

Abstract

The specific adsorption of radiolabeled sulfate ions from perchlorate supporting electrolyte on hematite powder has been investigated. It was demonstrated that a measurable adsorption occurs only at pH values under 5. The adsorption capacity of a given amount of hematite powder tends to a limiting value with decreasing pH. A Langmuir-like adsorption isotherm describes the concentration dependence of the adsorption of surfate species. It was found that the experimental results are in good agreement with the model suggested recently (Hug, S. J. J. Colloid Interface Sci. 188, 415 (1997)). (C) 2000 Academic Press.

Original languageEnglish
Pages (from-to)206-211
Number of pages6
JournalJournal of Colloid and Interface Science
Volume227
Issue number1
DOIs
Publication statusPublished - Jul 1 2000

Fingerprint

Hematite
hematite
Ions
Adsorption
adsorption
Powders
ions
Colloids
Adsorption isotherms
Electrolytes
Sulfates
perchlorates
colloids
sulfates
isotherms
ferric oxide
electrolytes

Keywords

  • Hematite
  • Radiotracer technique
  • Specific adsorption
  • Sulfate

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry
  • Surfaces and Interfaces

Cite this

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abstract = "The specific adsorption of radiolabeled sulfate ions from perchlorate supporting electrolyte on hematite powder has been investigated. It was demonstrated that a measurable adsorption occurs only at pH values under 5. The adsorption capacity of a given amount of hematite powder tends to a limiting value with decreasing pH. A Langmuir-like adsorption isotherm describes the concentration dependence of the adsorption of surfate species. It was found that the experimental results are in good agreement with the model suggested recently (Hug, S. J. J. Colloid Interface Sci. 188, 415 (1997)). (C) 2000 Academic Press.",
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N2 - The specific adsorption of radiolabeled sulfate ions from perchlorate supporting electrolyte on hematite powder has been investigated. It was demonstrated that a measurable adsorption occurs only at pH values under 5. The adsorption capacity of a given amount of hematite powder tends to a limiting value with decreasing pH. A Langmuir-like adsorption isotherm describes the concentration dependence of the adsorption of surfate species. It was found that the experimental results are in good agreement with the model suggested recently (Hug, S. J. J. Colloid Interface Sci. 188, 415 (1997)). (C) 2000 Academic Press.

AB - The specific adsorption of radiolabeled sulfate ions from perchlorate supporting electrolyte on hematite powder has been investigated. It was demonstrated that a measurable adsorption occurs only at pH values under 5. The adsorption capacity of a given amount of hematite powder tends to a limiting value with decreasing pH. A Langmuir-like adsorption isotherm describes the concentration dependence of the adsorption of surfate species. It was found that the experimental results are in good agreement with the model suggested recently (Hug, S. J. J. Colloid Interface Sci. 188, 415 (1997)). (C) 2000 Academic Press.

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KW - Specific adsorption

KW - Sulfate

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