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You are here: Home » Online First » Volume 19, 2024 - Number 2 » THE ROLE OF LIMING IN COPPER ADSORPTION OF ACIDIC SOILS, Carpathian Journal of Earth and Environmental Sciences February 2024, Vol. 19, No. 2, p. 313 – 320; DOI:10.26471/cjees/2024/019/301


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Fatih GÖKMEN1*, Enise SUKUŞU2, Uğur ŞİMŞEK1,& Veli UYGUR3
1Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Iğdır University, Iğdir,76100 Türkiye
2Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Siirt University, Siirt,56100 Türkiye
3Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Applied Sciences University of Isparta, Isparta, 32200 Türkiye.
*Correspondence e-mail address: fgokmen06@gmail.com


THE ROLE OF LIMING IN COPPER ADSORPTION OF ACIDIC SOILS, Carpathian Journal of Earth and Environmental Sciences February 2024, Vol. 19, No. 2, p. 313 – 320; DOI:10.26471/cjees/2024/019/301

Full text

Abstract:

Investigate the impact of varying rates of liming on the availability and sorption properties of copper in a range of acid soils with differing physico-chemical futures. Soil samples with varying acidity levels were collected from different locations in the acidic Black Sea Region of Türkiye. Out of the nine soil samples collected, four were obtained from regions where hazelnuts are grown, while the other five were obtained from areas dedicated to tea growth. The sorption properties of soils limed at 0%, 50%, and 100% of lime requirement and incubated for 12 months, then the Langmuir and Freundlich adsorption isotherms were determined by batch sorption technique. The results showed that increasing the soil pH resulted in an increase in Cu adsorption. Experimental results of Cu adsorption were explained with high coefficients of determination (93.44-98.98%) of the Langmuir model. In the three experimental groups with full, half, and no lime application, pH increased significantly to 3.95, 4.46, and 5.89, respectively, while the maximum adsorption obtained from Langmuir adsorption curves, Qmax1 1553, Qmax2 2205, and Qmax3 3902 mg kg-1, respectively. While the maximum adsorption in the tea plantation areas varied between 1491 and 1514 mg kg-1, the maximum adsorption in hazelnut cultivation areas varied between 777 and 3333 mg kg-1. These findings suggest that liming or other methods to increase soil pH could be effective soil management in reducing Cu mobility in acidic soils.



Keyword: Batch adsorption technique; pH; Isotherms; Langmuir; Freundlich.


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