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Related Experiment Video

Updated: Jun 25, 2026

Integrated Field Lysimetry and Porewater Sampling for Evaluation of Chemical Mobility in Soils and Established Vegetation

Integrated Field Lysimetry and Porewater Sampling for Evaluation of Chemical Mobility in Soils and Established Vegetation

Published on: July 4, 2014

Arsenic mobility and stabilization in topsoils.

Konstantina Tyrovola¹, Nikolaos P Nikolaidis

¹Department of Environmental Engineering, Technical University of Crete, University Campus, 73100 Chania, Crete, Greece. konstantina.tyrovola@enveng.tuc.gr

|February 10, 2009

Summary

This study shows that zero valent iron (ZVI) can stabilize arsenic in agricultural topsoils. The research developed a model to predict arsenic stabilization efficiency based on iron concentration and soil conditions.

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Experimental Column Setup for Studying Anaerobic Biogeochemical Interactions Between Iron (Oxy)Hydroxides, Trace Elements, and Bacteria

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Published on: December 19, 2017

Area of Science:

Environmental Science
Soil Science
Geochemistry

Background:

Agricultural topsoils are susceptible to arsenic pollution from geothermal water irrigation.
Arsenic contamination poses risks to soil health and potentially food safety.

Purpose of the Study:

To evaluate arsenic mobility in topsoils.
To assess the effectiveness of zero valent iron (ZVI) for arsenic stabilization.
To develop a predictive empirical model for arsenic stabilization.

Main Methods:

Short-term laboratory experiments were conducted to study arsenic stabilization.
An empirical model was developed correlating dissolved iron concentration with remaining arsenic in solution.
Experiments varied pH, ZVI/solution ratios, and temperature to assess arsenic release and adsorption.

Main Results:

Arsenic stabilization efficiency is influenced by reaction time and the ZVI/soil ratio.
The developed empirical model predicts arsenic release based on dissolved iron.
Arsenate desorption from soil increases with rising temperatures.

Conclusions:

Zero valent iron (ZVI) shows potential for stabilizing arsenic in contaminated agricultural topsoils.
The empirical model provides a tool for predicting stabilization outcomes.
Temperature is a critical factor influencing arsenic desorption from soils.