Adsorption of Strontium and Barium Ions and Their Exchange on Hydrous Ferric Oxide

Kurbatov, J. D.; Kulp, J. Laurence; Mack, Edward

doi:10.1021/ja01227a014

Cited by 22 publications

(11 citation statements)

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“…Review of the literature has shown that experimental studies of Sr adsorption are scarce. There are a few studies (7)(8)(9), the results of which, after Dzombak and Morel (10), we do not take into consideration for one reason or another. Mainly, there was no CO 2 exclusion during the experiments.…”

Section: Introductionmentioning

confidence: 99%

Strontium Sorption on Hematite at Elevated Temperatures

Karasyova

Иванова

Lakshtanov

et al. 1999

Journal of Colloid and Interface Science

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Section: Introductionmentioning

confidence: 99%

Strontium Sorption on Hematite at Elevated Temperatures

Karasyova

Иванова

Lakshtanov

et al. 1999

Journal of Colloid and Interface Science

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“…Sorption is a process by which metals are bound to the surface of an existing solid by adsorption and surface precipitation (9), whereas coprecipitation is the simultaneous precipitation of a chemical element with other elements and includes mixed-solid formation, adsorption, and inclusion (10,11). Although coprecipitation has not been as well studied as adsorption, it appears to remove trace metals from solution more efficiently (12)(13)(14).…”

Section: Introductionmentioning

confidence: 99%

Anaerobic microbial remobilization of toxic metals coprecipitated with iron oxide

Francis¹,

Dodge²

1990

Environ. Sci. Technol.

111

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An anaerobic N2-fixing Clostridium sp. solubilized Cd, Cr, Ni, Pb, and Zn coprecipitated with goethite (a-FeOOH) by (i) direct action due to enzymatic reduction of ferric iron and the release of metals associated with iron and (ii) indirect action due to metabolic products. The extent of dissolution depended upon the nature of the association of the metals with goethite. Substantial amounts of Cd and Zn, which were closely associated with iron, were released due to direct action. Nickel was solubilized by direct and indirect actions, while a small amount of Cr was solubilized only by direct action. The nature of association of Pb in the coprecipitate was not affected by the presence of other cations and it was solubilized by indirect action. In the presence of bacteria, the concentration of soluble Pb decreased due to biosorption. These results show that there could be significant remobilization of toxic metals coprecipitated with iron oxides in wastes, contaminated soils, and sediments due to microbial iron reduction.

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“…It is generally proposed that the hydrous oxides of Mn and Fe furnish the principal controls on the fixation of Cu and Zn in soil [Jenne, 1968]. Kurbatov et al [1941Kurbatov et al [ , 1945 report that divalent positive ions such as Sr, Ba, and Ra are adsorbed by ferric hydrous oxide. Then it may be considered that the enrichment or the depletion of natural radionuclides in soil is influenced by hydrous oxides of Mn and Fe.…”

Section: Introductionmentioning

confidence: 99%

Concentration of uranium series nuclides in soil particles in relation to their size

Megumi¹,

Mamuro²

1977

J. Geophys. Res.

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Soil was separated according to particle size, and the concentrations of the uranium series nuclides 238U, 230Th, 226Ra, and 210Pb in each size‐separated fraction were determined by γ ray spectrometry with Ge(Li) detectors. The activity ratios of 230Th, 226Ra, and 210Pb to 238U were larger than unity in all fractions. The activity ratio of 230Th to 238U was unexpectedly high, reaching 3–5. In the particle size range below 0.15 mm the concentrations of these uranium series nuclides were found to increase with decrease in particle size. Such a trend was also found for the elements Fe, Mn, Zn, and Cu. The elements K and Ca, however, were found to have a direct correlation with particle size.

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Adsorption of Strontium and Barium Ions and Their Exchange on Hydrous Ferric Oxide

Cited by 22 publications

References 0 publications

Strontium Sorption on Hematite at Elevated Temperatures

Strontium Sorption on Hematite at Elevated Temperatures

Anaerobic microbial remobilization of toxic metals coprecipitated with iron oxide

Concentration of uranium series nuclides in soil particles in relation to their size

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