Co-precipitation in some binary sulphate systems

Cohen, Allen I.; Gordon, Louis

doi:10.1016/0039-9140(61)80010-6

Cited by 27 publications

(8 citation statements)

References 11 publications

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“…I! : has been shown (Gordon 1955;Cohen and Gordon 1960) that Equation 3.2 1 is applicable to homogemeous coprecipitation (i.e., the method of appearing reagents, Krot et al 1996). The trapping process is satisfactorily depicted by a straight line at exposure times below about 60 minutes, consistent with the surface adsorption mechanism (Figure 3.6.2).…”

Section: -23mentioning

confidence: 55%

Investigation of the behavior of plutonium(V) in alkaline media

Budantseva¹,

Тананаев²,

Fedoseev³

et al. 1997

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The stability of the plutonium(V) oxidation state in alkaline media was studied with respect to the neighboring Pu(IV) and Pu(VI) oxidation states. Tests were conducted in 1 M or higher NaOH solutions in the presence and absence of other components of Hanford Site high-level tank waste. Spectrophotometric techniques were found to be effective in studying the behavior of plutonium(V) in alkaline solution at plutonium concentrations above 10" M. To this end, plutonium(V) and Plutonium(VI) solutions in NaOH were prepared and their spectra characterized. In alkaline solutions with NaOH concentration below 8 h4, plutonium(V) was found to be unstable to disproportionation occurring according to the reaction

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Section: -23mentioning

confidence: 55%

Investigation of the behavior of plutonium(V) in alkaline media

Budantseva¹,

Тананаев²,

Fedoseev³

et al. 1997

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“…This increase is due to the fact that SrSO4 is more similar to PbSO4 in its TOTH (1961) observed that X 4 equals to 0.269 at 40'C. XBas04 value is in the order of O.On (n = 1 3) (GORDON et al, 1954;COHEN and GORDON, 1961). These values indicate that PbSO4 incorporates more strontium than does BaSO4 and therefore it is expected that if other conditions are constant, the barite of high lead content would uptake more strontium than that of low lead content.…”

Section: Resultsmentioning

confidence: 98%

“…Therefore, DM 0 4 is ex pected to increase with an increase in temperature. COHEN andGORDON (1961), andSTARKE (1964) (2) Strontium and calcium concentrations of spring water: The thermal water in Tamagawa Hot Springs range in Sr2+/Ba2+ ratio (w/w) from 0.35 to 0.60. The ratio in the lower temperature region reveals somewhat larger values than that in the higher temperature region.…”

Section: Resultsmentioning

confidence: 99%

Strontium and calcium coprecipitation with lead-bearing barite from hot spring water

Takano

Watanuki

1972

Geochem. J.

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The amounts of strontium and calcium in the lead-bearing barite from hydro thermal solution were found to increase with the lead content of the barite. This fact suggests that the difference between DM _ [M/Pb]PbSO4 and DM = [M/Ba]Baso4 PbSO4 [M/Pb]aq BaSO4 [M/Ba]aq primarily contributes to the increment of both trace elements in the barite, where DMPbs0 4 and DM04 represent the distribution coefficients of M which refers to stron tium or calcium; [M/Pb] and [M/Ba] indicate the M-lead and M-barium weight ratios, respectively, in sulfate and aqueous solution.

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“…1.1 X io-" 510 °Calculated from equilibrium expression used by Fischer in Table III of (#). 1 Calculated from rate equation given by Fischer in Table III of (0). precipitation of nickel dimethylglyoximate from homogeneous solution (6), where the dimethylglyoxime is produced by the reaction of biacetyl and hydroxylamine.…”

Section: Nucleation In Precipitation Reactions From Homogeneous Solutionmentioning

confidence: 99%

Nucleation in Precipitation Reactions from Homogeneous Solution

Haberman¹,

Gordon²,

Fischer³

1961

Anal. Chem.

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indicated that manganese up to 100 p.p.m. was retained on 25-cm. columns when the HC1 concentration was 10M or higher. Copper and iron were retained on the column under the same conditions.The Mn(II) was eluted by using 25 ml. of 6M HC1. This concentration and volume of acid gave quantitative recovery of manganese from 0 to 100 p.p.m.After Mn(II) was eluted, a 2.5M HC1 solution wras used to elute Cu(II). The volume used was 70 ml.These conditions provided for quantitative removal of Cu(II) with no indication of Fe(III) in the eluate. Trials with 2.00 and 2.25M HC1 were unsuccessful. The concentration and volume of HC1 for this separation are more critical than those used for Mn(II) and Fe(III).After removal of copper, Fe(III) was eluted with 40 ml. of 0.5 HC1. This also was quantitative and successful in the range 0 to 100 p.p.m. In all cases a total of 25 ml. of solution of concentrations up to 100 p.p.m. were placed on the column. Thus, the total maximum amount of any ion on the resin column was 2.5 mg.

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Co-precipitation in some binary sulphate systems

Cited by 27 publications

References 11 publications

Investigation of the behavior of plutonium(V) in alkaline media

Investigation of the behavior of plutonium(V) in alkaline media

Strontium and calcium coprecipitation with lead-bearing barite from hot spring water

Nucleation in Precipitation Reactions from Homogeneous Solution

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