E3S Web Conf.
Volume 205, 20202nd International Conference on Energy Geotechnics (ICEGT 2020)
|Number of page(s)||6|
|Section||Minisymposium: Engineered Geomaterials for Energy and Environmental Sustainability (organized by Alessandro Rotta Loria)|
|Published online||18 November 2020|
In situ characterization of temperature and gas production using membrane interface probe (MIP) and hydraulic profiling tool (HPT) in an operating municipal solid waste landfill
1 PhD Student, Civil Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA
2 Undergraduate Student, Civil Engineering, University of Nebraska-Lincoln, Lincoln, NE USA
3 Assistant Professor, Civil Engineering, University of Nebraska-Lincoln, Lincoln, NE USA
* Corresponding author: firstname.lastname@example.org
A modern Municipal Solid Waste (MSW) landfill is a renewable energy resource to produce a significant amount of heat and methane used for generating electricity. However, it is difficult to use those sources effectively because active and post-closure MSW landfills are heterogeneous spatially and temporally and exposed to complex environments with varying pressure and moisture in the landfill. With regard to the prediction of the sources, the analysis of in situ MSW properties is an alternative way to reduce the uncertainty and to understand complex processes undergoing in the landfill effectively. A Hydraulic Profiling Tool (HPT) and Membrane Interface Probe (MIP) measures the continuous profile of MSW properties with depth, including hydraulic pressure, temperature, hydraulic conductivity, electrical conductivity (EC), and concentration of selected volatile organic compounds and methane. In this study, we conducted a series of MIP with HPT tests to investigate the MSW characteristics of a landfill in Nebraska. The results of the test showed an increase in hydraulic pressure and temperature with depth. The EC profile showed a variety of different waste constituents and MIP results showed the methane trapped beneath the top cover. The results in terms of hydraulic properties, temperature and EC obtained from different sites can be used to estimate the waste age and help designing energy recovery systems.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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