Retention effect and mode of capillary zone on the migration process of LNAPL pollutants based on experimental exploration

Zuo, Rui; Wu, Ziyi; Li, Jie; Zheng, Siyu; Liu, Jiawei; Han, Kexue; Liu, Yuepeng; Wang, Jinsheng

doi:10.1016/j.ecoenv.2023.114669

Cited by 5 publications

(1 citation statement)

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“…Compared to inorganic contaminants, LNAPLs are more difficult to degrade due to their complex chemical composition and high degree of stability (Li et al, 2023). Once LNAPLs enter the soil, they can migrate underground driven by forces of gravity and capillary action ultimately infiltrating into the groundwater and causing long-term contamination (Zuo et al, 2023). Prior to remediation of a contaminated site, determining the level and distribution of contaminants is crucial for developing effective remediation strategies and plans.…”

Section: Introductionmentioning

confidence: 99%

A rapid detection method for diesel content in diesel-contaminated soil based on dielectric measurement and oven-drying tests

Liu,

Lan,

Zhang

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Geophysical testing techniques have been successfully applied to identify light non-aqueous phase liquids in soils, but challenges remain in rapidly detecting contaminant content. Detection of contaminants in soil using geophysical testing techniques relies on sensors sensitive to electrical and electromagnetic parameter changes. In this study, the complex permittivity of silty clay contaminated with 0# diesel was measured using an open-ended coaxial probe at frequencies from 200–3000 MHz, and the four-phase dielectric mixing models were evaluated. The measurement results showed that the complex refractive index method (CRIM) model provided a better match with the real permittivity of the four-phase system between 500–3000 MHz with relative errors within an acceptable range of 4%. To eliminate the unknown variable in the CRIM model, an improved equation for the relationship between water content and diesel content of the watery diesel-contaminated silty clay was established by the oven-drying method. Thus, a method for the rapid quantitative detection of the diesel content in contaminated soil has been developed based on dielectric measurement and oven-drying tests. The relative error between the calculated and actual set diesel content for ten manually configured diesel-contaminated soil samples was within 10%, with a maximum error of 15.75%.

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Section: Introductionmentioning

confidence: 99%