Volume 19, Issue 72 (summer 2015)                   jwss 2015, 19(72): 205-216 | Back to browse issues page

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Chavoshi E, Afyuni M, Hajabbasi M A. Simulation of Fluoride Transport in a Calcareous Soil Using HYDRUS-1D. jwss 2015; 19 (72) :205-216
URL: http://jstnar.iut.ac.ir/article-1-3075-en.html
1. Dept. of Soil Sci., Collage of Agric., Isfahan (Khorasgan) Branch, Islamic Azad Univ., Isfahan, Iran. , chavoshie@yahoo.com
Abstract:   (14421 Views)

Transport of fluoride and consumption of groundwater with excess fluoride concentrations poses a health threat to millions of people around the world. The objective of this study was to simulate transport of fluoride (F) using HYDRUS-1D model. The study was conducted in lysimeters at Lavark research station site in Isfahan. The treatments consisted of two concentrations of F (157 and 315 mg kg-1). The duration of the study was 125 days. Some of soil physical and chemical properties, soluble F and total F concentration were determined during the study. The results showed the transport of F in calcareous soil profiles. This may be due to the high pH and desorption of F ion as a result of repulsion by the more negatively charged soil surfaces. The highest concentration of total F and water soluble F were observed in the 10 cm surface soil layer. The concentration of F decreased with increased soil depth. The correlation coefficient was significant between the water soluble fluoride and the total fluoride (1% level). Also, the difference between the observed t- value and a critical value on the t distribution is statistically insignificant. It showed that the model simulated successfully water soluble F concentration in the soil profile.

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Type of Study: Research | Subject: Ggeneral
Received: 2015/08/24 | Accepted: 2015/08/24 | Published: 2015/08/24

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