Effect of Cd Sorption on the Electrical Properties of Fly Ash OTHER

Title
Effect of Cd Sorption on the Electrical Properties of Fly Ash
Alternative Title
Effect of Cd Sorption on the Electrical Properties of Fly Ash
Author(s)
오명학; 김용성; 이광헌
KIOST Author(s)
Oh, Myounghak(오명학)
Publication Year
2012
Abstract
The measurement of electrical properties could be a good solution to monitoring the contaminant transport through a barrier. In order to verify the effect of heavy metal sorption on the electrical properties of fly ash, the electrical properties of fly ash contaminated by cadmium based on the permittivity and the electrical resistivity were investigated. Permittivity of fly ash was found to be an inadequate indicator in monitoring the adsorption of cadmium on fly ash. However, in case of Cd-adsorbed fly ash, electrical resistivity was found to be unaffected by cadmium content, giving a relatively consistent value which was significantly greater than that of washed fly ash with contaminated pore water. Therefore, presence of cadmium in the pore water and in the adsorbed state brings about diverging values of electrical resistivity, which may be a good indicator to represent the degree of phase transition of cadmium ions during adsorption by fly ash.roperties of fly ash contaminated by cadmium based on the permittivity and the electrical resistivity were investigated. Permittivity of fly ash was found to be an inadequate indicator in monitoring the adsorption of cadmium on fly ash. However, in case of Cd-adsorbed fly ash, electrical resistivity was found to be unaffected by cadmium content, giving a relatively consistent value which was significantly greater than that of washed fly ash with contaminated pore water. Therefore, presence of cadmium in the pore water and in the adsorbed state brings about diverging values of electrical resistivity, which may be a good indicator to represent the degree of phase transition of cadmium ions during adsorption by fly ash.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/3765
Bibliographic Citation
International Journal of Geotechnical Engineering, v.4, no.3, pp.37 - 43, 2012
Type
Article
Language
English
Related Researcher
Research Interests

Marine geotechnics,Geoenvironmental Engineering,offshore foundation,해양지반공학,지반환경공학,해양구조물 기초

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