A new type of isotherm for zinc liquid-solid partitioning on δ−MnO2, γ−MnOOH and manganite in seawater

Pan Gang; Zhang Zhengbin; Liu Liansheng

doi:10.1007/BF02848521

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A new type of isotherm for zinc liquid-solid partitioning on δ−MnO2, γ−MnOOH and manganite in seawater

Updated：2023-05-16

- A new type of isotherm for zinc liquid-solid partitioning on δ−MnO2, γ−MnOOH and manganite in seawater
- Journal of Oceanology and Limnology Vol. 5, Issue 1, Pages: 40-50(1987)
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- Author bio：
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- DOI：10.1007/BF02848521
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- Published：1987
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Gang, P., Zhengbin, Z. & Liansheng, L. A new type of isotherm for zinc liquid-solid partitioning on δ−MnO2, γ−MnOOH and manganite in seawater., Chin. J. Ocean. Limnol. 5, 40–50 (1987). https://doi.org/10.1007/BF02848521
DOI：

Gang, P., Zhengbin, Z. & Liansheng, L. A new type of isotherm for zinc liquid-solid partitioning on δ−MnO2, γ−MnOOH and manganite in seawater., Chin. J. Ocean. Limnol. 5, 40–50 (1987). https://doi.org/10.1007/BF02848521 DOI：

摘要

Abstract

This article deals with the interaction of zinc with δ−MnO2

γ−MnOOH and manganite existing in natural water systems. The mechanism of the reaction has been studied in detail. From the fact that the “ratio of ion exchange(%)-pH” graph is an “S shaped” curve

it is possible to deduce that the chemical reaction is of the nature of cation exchange. And since the pH range of ion exchange=4

it is possible to further deduce that the reaction can be explained by the mechanism of monovalence cation exchange. The main result of this article is the discovery of a new type of isotherm which has not been mentioned in previous literature here and abroad. This isotherm cannot be represented by any presently available adsorption isotherm equations in marine chemistry. The characteristics of this new type of isotherm are as follows: the isotherm has two “knees” and three “plateaus”

the heights of these three “plateaus” are in the ratio 1:2:3. In order to explain theoretically our new isotherm

this article suggests the application of the principle of interfacial stepwise ion exchange for liquid-solid distribution of minor elements on suspended particulate matter. The corresponding isotherm equation was derived from this theory. The results obtained in this article will be of theoretical guiding significance in the study of the marine geochemistry of zinc.

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references

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