Predicting Model of Arsenic Transport and Transformation in Soil Columns and Ground Water Contamination (Case study: Gorgan Plain, Iran)

Document Type : REVIEW PAPER


1 Department of civil engineering ,Nowshahr,Islamic Azad University of Nowshahr,Iran

2 Department of civil engineering ,Arian University of Babol, Iran



Today, the quality of soil and water resources is affected by various pollutants. From the important chemical pollutants are heavy metals such as Arsenic. Arsenic is a metalloid that its unauthorized amounts in soil and ground water is a serious threat to human life .A mathematical and computer model of arsenic transport and transformation in a soil column from the surface to the groundwater is presented in this study. The flow and the corresponding moisture content and the concentration of a contaminant are considered here in as continuous functions of both space and time. The model simulates different species of arsenic such as arsenit, arsenat, and organic arsenic. This computer model is based on the mass balance equation,including convective transport, dispersive transport,surface adsorption, oxidation and reduction, volatilization, chemical and biological transformation. The governing equations are solved numerically by the implicit finite difference method. For the validation of model under transient states ,the data sets collected from Gorgan site, Golestan province.The simulation results are in good agreement with measured values. With this study and its results the distribution of arsenic in soil column to ground water table can be predicted. The simulation results indicate as the total time from the beginning to the end of simulation increases , the concentration of Arsenic approaches the measured values , as indicated in the result


Mirbagheri SA, Tanji KK (2006) Selenium transport and transportation modeling, 7th International conference on hydroscience and engineering, Philadelphia, USA, 10-13.
Wang S, Mulligan CN (2006) Effect of natural organic matter on arsenic release from soils and sediments into groundwater, Environmental Geochemistry and Health, 28: 197–214.
Zare Aghbolagh J, Fataei E. 2016, The study of changes in Ardabil plain groundwater level using GIS, , Advances in Science and Technology Research Journal, 10(29): 109–115 DOI: 10.12913/22998624/61938.
  • Receive Date: 01 December 2019
  • Revise Date: 19 January 2020
  • Accept Date: 12 February 2020
  • First Publish Date: 01 March 2020