Evaluation of Changes in the Permeability Characteristics of a Geotextile–Polynorbornene Liner for the Prevention of Pollutant Diffusion in Oil-Contaminated Soils

Abstract

In this study, changes in the permeability characteristics of a geotextile–polynorbornene liner at different oil pollutant contact times were evaluated. Experiments and numerical analyses were performed, and ASTM D5887 and ASTM D6766 were applied as test methods. The test results show that, when the pollutant contact time and pressure head were 4 h and 75 kPa, the reaction between the geotextile–polynorbornene liner and the pollutant was almost complete. Moreover, a numerical analysis was used to measure the ratio of the concentration of the pollutant that permeated through the geotextile–polynorbornene liner to the initial pollutant concentration at different pollutant contact times. The ratio was between 70 and 83% after a pollutant contact time of 0.5 h and between 0.1 and 1.0% after 4 h. The test and numerical analysis results confirm that, as a reactive medium, the geotextile–polynorbornene liner can effectively prevent the diffusion of oil pollutants by changing its permeability characteristics.

Simulation on the Permeability Evaluation of a Hybrid Liner for the Prevention of Contaminant Diffusion in Soils Contaminated with Total Petroleum Hydrocarbon

“…In general, the permeability of impermeable materials is evaluated by the methods presented in ASTM D5887 and ASTM D6766. The permeability of the hybrid liner applied in this study, was confirmed using the test method in a previous study [ 32 ]. However, it is necessary to evaluate the permeability of the hybrid liner according to the TPH diffusion in the test apparatus that can simulate the ground, because the previous study is not a test for soil.…”

“…This is because oil contaminant diffusion is caused by adsorption onto soil particles or the hydraulic properties of groundwater, which are difficult to physically control. Thus, a prior study developed and assessed the applicability of a reactive liner (named “geotextile-polynorbornene liner” in the previous study) that can respond to the hydraulic properties of groundwater and prevent oil contaminant diffusion via gelation [ 32 ].…”

“…We quantitatively analyzed the permeability of the hybrid liner, based on the results of the impermeability efficiency evaluation test. Furthermore, compared to the previous study [ 32 ], the impermeability efficiency was assessed through simulations using various TPH reaction times of the hybrid liner.…”

Sustainability in Geotechnics through the Use of Environmentally Friendly Materials

“…The use of recycled materials replacing the soils or natural quarry materials in geotechnical works was presented by various researchers [12][13][14][15][16]. Sustainable solutions using geosynthetics to prevent soil contamination [17,18], to treat the sludge generated in different industries and avoid ground contamination [19] and to reinforce alternative filling materials [12,16,20] are also discussed in the Special Issue.…”

“…Park [17] evaluates experimental and numerically the permeability characteristics of a geotextile-polynorbornene liner at different oil pollutant contact times and pressure heads. This study confirms the impermeability of the geotextile-polynorbornene liner against oil pollutants and its potential as a solution to prevent pollutant diffusion.…”