A STUDY ON POTASSIUM ADSORPTION ISOTHERMS IN SOME SOILS

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NOURBAKHSH FARSHID; KALBASI M.; RAFIEI F.

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Journal: Iranian Journal of Soil Research Year:2000 | Volume:14 | Issue:2 Page(s): 130-140

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Information Journal Paper

Title

A STUDY ON POTASSIUM ADSORPTION ISOTHERMS IN SOME SOILS

Author(s)

NOURBAKHSH FARSHID | KALBASI M. | RAFIEI F. | Issue Writer Certificate

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Abstract

Potassium is one of the most important crop nutrients. Its plant uptake generally is more than other nutrients, except for nitrogen. Soluble and exchangeable form, of potassium are available to plants but there is also a considerable amount of potassium in clay interlayer’s and crystal structure of primary and secondary minerals which may became partially available to paints .Adsorption of potassium on soil colloidal surfaces is an important phenomenon which needs more research. To study this phenomenon three different soils series including Dehno (Torriorthent), Lavark (Haplargid) and Lordegan (Calcixeroll) were used. Each of the soil samples were treated with calcium chloride to allow their exchangeable sites to be saturated with calcium ion. Then the calcium-saturated soils equilibrated with increasing initial concentrations of potassium. The final concentration of potassium measured and adsorped potassium was calculated from the difference between initial and final potassuium concentrations. Langmuir, Frundlich, Temkin and Initial mass models were used to describe the adsoption data. Results revealed that all four models were relevant, but the degree of fitness to langmuir model was lower than those of Frundlich, Temkin and Initial mass models. Maximum adsorption (Xm) and adsorption afinity (K) of Langmuir model, capacity (n) and afinity (K) parameters of Frundlich, parameters of Temkin model (A and B)and reserve soil pool (RSP) parameter of initial mass model were also estimated.

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References

سینتیک آزاد شدن پتایسیم از خاکهای شالیزاری شمال ایران 1- مقایسه و ارزیابی معادلات سینتیکی مرتبه اول، مرتبه صفر و دیفیوژن پارابولیکی

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APA: Copy

NOURBAKHSH, FARSHID, KALBASI, M., & RAFIEI, F.. (2000). A STUDY ON POTASSIUM ADSORPTION ISOTHERMS IN SOME SOILS. IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES, 14(2), 130-140. SID. https://sid.ir/paper/15911/en

Vancouver: Copy

NOURBAKHSH FARSHID, KALBASI M., RAFIEI F.. A STUDY ON POTASSIUM ADSORPTION ISOTHERMS IN SOME SOILS. IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES[Internet]. 2000;14(2):130-140. Available from: https://sid.ir/paper/15911/en

IEEE: Copy

FARSHID NOURBAKHSH, M. KALBASI, and F. RAFIEI, “A STUDY ON POTASSIUM ADSORPTION ISOTHERMS IN SOME SOILS,” IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES, vol. 14, no. 2, pp. 130–140, 2000, [Online]. Available: https://sid.ir/paper/15911/en

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