Applicability of grid-net detection system for landfill leachate and diesel fuel release in the subsurface SCIE SCOPUS

Cited 15 time in WEB OF SCIENCE Cited 24 time in Scopus
Title
Applicability of grid-net detection system for landfill leachate and diesel fuel release in the subsurface
Author(s)
Oh, Myounghak; Seo, Min Woo; Lee, Seunghak; Park, Junbourn
KIOST Author(s)
Oh, Myoung Hak(오명학)
Publication Year
2008-02-19
Abstract
The grid-net system estimating the electrical conductivity changes was evaluated as a potential detection system for the leakage of diesel fuel and landfill leachate. Aspects of electrical conductivity changes were varied upon the type of contaminant. The electrical conductivity in the homogeneous mixtures of soil and landfill leachate linearly increased with the ionic concentration of pore fluid, which became more significant at higher volumetric water contents. However, the electrical conductivity in soil/diesel fuel mixture decreased with diesel fuel content and it was more significant at lower water contents. The electrode spacing should be determined by considering the type of contaminant to enhance the electrode sensitivity especially when two-electrode sensors are to be used. The electrode sensitivity for landfill leachate was constantly maintained regardless of the electrode spacings while that for the diesel fuel significantly increased at smaller electrode spacings. This is possibly due to the fact that the insulating barrier effect of the diesel fuel in non-aqueous phase was less predominant at large electrode spacing because electrical current can form the round-about paths over the volume with relatively small diesel fuel content. The model test results showed that the grid-net detection system can be used to monitor the leakage from waste landfill and underground storage tank sites. However, for a successful application of the detection system in the field, data under various field conditions should be accumulated. (C) 2007 Elsevier B.V All rights reserved.
ISSN
0169-7722
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4537
DOI
10.1016/j.jconhyd.2007.10.002
Bibliographic Citation
JOURNAL OF CONTAMINANT HYDROLOGY, v.96, no.1-4, pp.69 - 82, 2008
Publisher
ELSEVIER SCIENCE BV
Subject
ELECTRICAL-RESISTIVITY; COMPLEX PERMITTIVITY; CONTAMINATED SOIL; CONDUCTIVITY; LINERS; WATER; CONE; LEAK; MODEL
Keywords
grid-net detection system; diesel fuel; electrical conductivity; subsurface contamination; waste landfill leachate
Type
Article
Language
English
Document Type
Article
Publisher
ELSEVIER SCIENCE BV
Related Researcher
Research Interests

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

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