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In Situ Study of the Specific Adsorption of HSO4−/SO42− Ions on Hematite by Radiotracer Technique

✍ Scribed by G. Horányi; P. Joó

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
70 KB
Volume
227
Category
Article
ISSN
0021-9797

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✦ Synopsis

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 sulfate species. It was found that the experimental results are in good agreement with the model suggested recently (Hug, S.

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