Die Adsorption von Mn, Co, Cu und Zn durch Goethit aus verdünnten Lösungen

Grimme, H.

doi:10.1002/jpln.19681210108

Cited by 90 publications

(34 citation statements)

References 7 publications

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“…For yellow-brown pumice soils the order of sorption of Cu, Co, and Cd with pH ( Fig. 3), at low metal concentration, was similar to that obtained with the soil mineral goethite (a-FeOOH) (Grimme 1968;Forbes et al 1974). Of these three elements Cu was the most efficiently removed from solution by both 0-7.5 cm and 7.5-15 cm soil samples.…”

Section: Sorption Of Co Cll Zn and CDsupporting

confidence: 71%

“…Divalent Co, Cu, and Zn are sorbed by amorphous aluminosilicates in laboratory experiments, but none of these elements is related to extractable AI in Table 4, and their association with these clays, in situ, is uncertain. The oxide forms of Fe and Mn are known to sorb Co, Cu, and Zn (Grimme 1968;Forbes et aI. 1974;Taylor & McKenzie 1966), and here extractable Co and Zn, but not Cu, are significantly correlated with Fe and Mn, and associations are possible.…”

Section: "Fertiliser Plus Plant" Modelmentioning

confidence: 79%

“…Several soil ~omponents, including organic matter (Stevenson & Ardakani 1972), iron oxides (Grimme 1968;Stanton & Burger 1970;Forbes et al 1974), and manganese oxides (Taylor & McKenzie 1966), are known to sorb these elements. An attempt is made here to assess their reactivity, and that of allophane, toward Co, Cu, and Zn (and Cd, an element with similar properties (Forbes et al 1974)).…”

Section: Introductionmentioning

confidence: 99%

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Cobalt, copper, and zinc in yellow-hrown pumice soils under grazed, permanent pastures

Forbes

1976

New Zealand Journal of Agricultural Research

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The 0-7.5 cm depth of soil from 29 pastures on yellow-brown pumice soils contains more H+/H202-and EDTA/NH4Cl-extractable Co, Cu, and Zn than the corresponding 7.5-15 cm depth. The differences in H+ /H202-extractable quantities between the two depths ranges from. 0.1 to 2.3 ppm Co, 0.1 to 2.2 ppm C~, and 0.5 to 9.8 ppm Zn. H+/H202 is known to dissolve orgamc matter, any manganese oXides, and some Al and Fe in these soils and the above increments in extractable Co, Cu, and Zn are shown to be consistent with thei~ . acc~mulation. from t:ertiliser additions. and. plant and faecal deposition. Fertiliser additIOn IS the major contnbutor to changes In sOlI Co, and Cu in plant and faecal residues is the major contributor to changes in soil Cu. For Zn, both factors make significant contributions. Laboratory experiments support the conclusion that these elements derived from fertiliser, accumulate in the surface 7.5 cm of soil. At a solution concentration of 1O-5M the percentages of di,vale?t Co, Cu, and Zn, sorbed from O.OlM NaN03 are greater than 90% at pH 5 to 6, which 18 the normal field pH range. The similarity of the sorption reactions of hydrolysable divalent cations is examined for Co and Cd, where the amounts sorbed at pH 3.7 are highly correlated (r = 0.97*** for 0-7.5 cm and 0.94*** for 7.5-15 cm samples) . The amounts sorbed appear to depend on the organic matter content of the soil as well as the pH, but the influence of manganese oxides is probably small. 153

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Section: Sorption Of Co Cll Zn and CDsupporting

confidence: 71%

Section: "Fertiliser Plus Plant" Modelmentioning

confidence: 79%

Section: Introductionmentioning

confidence: 99%

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Cobalt, copper, and zinc in yellow-hrown pumice soils under grazed, permanent pastures

Forbes

1976

New Zealand Journal of Agricultural Research

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“…Although exact reaction mechanisms cannot be explained, some insight comes from sorption experiments by Grimme (1968), McKenzie (1980), and Davies (1985, 1986. Grimme (1968) studied sorption of Mn and other heavy metals on synthetic goethite, hematite, and "X-ray amorphous oxide" (ferrihydrite) as a function of pH and found no principle differences between the adsorption properties of the three minerals. Sorption of…”

Section: Role Of Mn In Formation Of Iron Oxidesmentioning

confidence: 99%

The influence of pH on the synthesis of mixed Fe-Mn oxide minerals

Ebinger

Schulze

1990

Clay miner.

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Mn-substituted iron oxides were synthesized at pH 4, 6, 8, and 10 from Fe-Mn systems with Mn mole fractions (Mn/(Mn + Fe)) of 0, 0.2.0.4, 0.6, 0.8, and 1.0, and kept at 50~ for 40 days. The Mn mole fraction in goethite was <0-07 at pH 4 but increased to -0.47 at pH 6. Goethite and/or hematite formed in Fe and Fe + Mn syntheses at pH 4 and pH 6 at Mn mole fractions <-0.8, and at Mn mole fractions -<0-2 at pH 8 and pH 10. Hausmannite and jacobsite formed at pH 8 and pH 10 at Mn mole fractions ~>0.4. In the pure Mn syntheses, manganite (y-MnOOH) formed at pH 4 and pH 6, whereas hausmannite (Mn304) formed at pH 8 and pH 10. As the Mn substitution increased, the unit-cell dimensions of goethite shifted toward those of groutite, and the mean crystallite dimensions of goethite decreased.

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“…Increasing amounts of Zn being extracted from natural soils or Zn-treated soils by using acid extracting solutions has been found by HIBBARD (1940), PEECH (1941), BROWN (1950) and others, but has not been interpreted in terms of the competition between Zn and proton to the cation-exchange sites on clay minerals. On the other hand, the specific adsorption of Zn on goethite has been considered as an exchange process against protons on the oxide surface on the basis of its dependence on pH (GRIMME, 1968;FORBES et al, 1976).…”

Section: The Approach Based On the Zn-ca Exchange Equationmentioning

confidence: 99%

Characterization of zinc adsorption sites in two mineral soils

Wada

Abdel-Fattah

1978

Soil Science and Plant Nutrition

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The adsorption of Zn, as compared with Mg, on two mineral soils, which differed in their major cation-exchange materials and with and without Ca-saturation, was measured in the presence of free CaCl a •The adsorption of Zn as well as Mg occurred on cation-exchange sites. The Zn adsorption data conformed to a two-term Langmuir equation. The presence of two kinds of adsorption sites and their numbers and bonding energies were deduced. However, the Langmuir approach was not adopted on the basis of comparison between the total number of the adsorption sites for Zn deduced and the CEC of the soils.As an alternative approach, the selectivity coefficient K~~, as defined by the equation:was calculated for each adsorption equilibrium and plotted against the amount of Zn adsorbed. This K~:-[Zn]80i! plot was used to estimate the capacities of the soil to adsorb Zn with specified affinities. The K~: value varied between 1 and 1,000, whereas the corresponding K~arz value varied only between 0.5 and 1. The K~: value was dependent upon the amount of Zn adsorbed, the status of exchangeable cations, and the major cation-exchange materials (montmorillonite VS. allophane-imogolite) in the soils. The importance of surface OH groups in allophane-imogolite as specific adsorption sites for Zn was suggested.

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Die Adsorption von Mn, Co, Cu und Zn durch Goethit aus verdünnten Lösungen

Cited by 90 publications

References 7 publications

Cobalt, copper, and zinc in yellow-hrown pumice soils under grazed, permanent pastures

Cobalt, copper, and zinc in yellow-hrown pumice soils under grazed, permanent pastures

The influence of pH on the synthesis of mixed Fe-Mn oxide minerals

Characterization of zinc adsorption sites in two mineral soils

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