Huweg, Abdurrahman F. S. and Kamel, Fouad and Raine, Steven (2011) Effect of electro-osmosis on soil-water potential and water chemistry in sand. In: SEAg 2011: Diverse Challenges, Innovative Solutions, 29-30 Sep 2011, Gold Coast, Australia.
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This research investigated the effect of applying an electrical field on soil-water and salt movement in near saturated sand. A horizontal electric field was generated in sand by the application of a constant voltage gradient of 1 V cm-1. The electrical current was found to decrease with increasing period of application. The application of the electrical field produced changes in both the soilwater potential (SWP) and soil-water chemistry between the electrodes. SWP was found to increase near the cathode and mid-way between the electrodes but decreased close to the anode. The electrical conductivity of extracted soil-water was generally found to increase near the anode and decrease near the cathode during the application of electrical current. Similarly, the pH generally decreased near the anode and slightly increased near the cathode. However, the magnitude of the change in EC and pH varied during the period of electrical application and varied by location within the profile, presumably due to variations in electrical field intensity.
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