EFFECT OF MODIFIED MONTMORILLONITE ON IMMOBILIZATION OF CADMIUM IN TWO SANDY AND CLAY LOAM SOILS

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FARAHI S.; SHIRANI H.; HAMIDPOUR M.

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Journal: Journal of Water and Soil Year:2013 | Volume:27 | Issue:5 Page(s): 998-1008

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Title

EFFECT OF MODIFIED MONTMORILLONITE ON IMMOBILIZATION OF CADMIUM IN TWO SANDY AND CLAY LOAM SOILS

Author(s)

FARAHI S. | SHIRANI H. | HAMIDPOUR M. | Issue Writer Certificate

Keywords

MONTMORILLONITEQ2

POLYACRYLAMIDEQ2

CADMIUMQ2

ADSORPTIONQ2

DESORPTIONQ1

Abstract

This study examined the effect of natural MONTMORILLONITE and POLYACRYLAMIDE modified MONTMORILLONITE on the sorption and DESORPTION of CADMIUM in sandy and clay loam soils. All isothermal experiments were performed in the context of the electrolytes calcium nitrate and in 7 levels of CADMIUM concentrations (1.5 to 10 mg/l). DESORPTION experiment were done immediately after completion sorption experiment. Sorption isotherms were well fitted by Freundlich, Langmuir and Koble-Corrigan models. Koble-Corrigan model with the highest coefficient of determination (R2) and the minimum error (SEE) had the best fit to the data. The value obtained for K1 constant were 0.034 and 0.198 in the two sandy and clay loam soils suspensions containing modified MONTMORILLONITE, respectively. These results revealed the high affinity of CADMIUM sorption on modified MONTMORILLONITE. The amounts of Cd desorbed from natural MONTMORILLONITE were more than from modified MONTMORILLONITE. These results confirm that, in general, modified MONTMORILLONITE with POLYACRYLAMIDE is a good agent for immobilization of CADMIUM in contaminated soils.

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APA: Copy

FARAHI, S., SHIRANI, H., & HAMIDPOUR, M.. (2013). EFFECT OF MODIFIED MONTMORILLONITE ON IMMOBILIZATION OF CADMIUM IN TWO SANDY AND CLAY LOAM SOILS. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), 27(5), 998-1008. SID. https://sid.ir/paper/141210/en

Vancouver: Copy

FARAHI S., SHIRANI H., HAMIDPOUR M.. EFFECT OF MODIFIED MONTMORILLONITE ON IMMOBILIZATION OF CADMIUM IN TWO SANDY AND CLAY LOAM SOILS. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY)[Internet]. 2013;27(5):998-1008. Available from: https://sid.ir/paper/141210/en

IEEE: Copy

S. FARAHI, H. SHIRANI, and M. HAMIDPOUR, “EFFECT OF MODIFIED MONTMORILLONITE ON IMMOBILIZATION OF CADMIUM IN TWO SANDY AND CLAY LOAM SOILS,” JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), vol. 27, no. 5, pp. 998–1008, 2013, [Online]. Available: https://sid.ir/paper/141210/en

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