Effect of electro-osmosis on soil-water potential and water chemistry in sand

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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Abstract

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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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to published version due to publisher copyright policy.
Depositing User: Dr Fouad Kamel
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Electrical, Electronic and Computer Engineering
Date Deposited: 27 Mar 2012 04:33
Last Modified: 03 Jul 2013 01:07
Uncontrolled Keywords: electro-osmosis; irrigation; electric field in soils
Fields of Research (FOR2008): 09 Engineering > 0906 Electrical and Electronic Engineering > 090602 Control Systems, Robotics and Automation
09 Engineering > 0906 Electrical and Electronic Engineering > 090607 Power and Energy Systems Engineering (excl. Renewable Power)
09 Engineering > 0907 Environmental Engineering > 090701 Environmental Engineering Design
05 Environmental Sciences > 0503 Soil Sciences > 050399 Soil Sciences not elsewhere classified
Socio-Economic Objective (SEO2008): B Economic Development > 85 Energy > 8504 Energy Transformation > 850499 Energy Transformation not elsewhere classified
B Economic Development > 85 Energy > 8507 Energy Conservation and Efficiency > 850799 Energy Conservation and Efficiency not elsewhere classified
B Economic Development > 85 Energy > 8598 Environmentally Sustainable Energy Activities > 859899 Environmentally Sustainable Energy Activities not elsewhere classified
B Economic Development > 85 Energy > 8598 Environmentally Sustainable Energy Activities > 859806 Management of Water Consumption by Energy Activities
URI: http://eprints.usq.edu.au/id/eprint/20996

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