Details

Autor(en) / Beteiligte

• Wu, Meng
• Zhao, Zening
• Wu, Wei
• Cai, Guojun

Titel

Detection of volatile organic compounds by membrane interface probe: Multiphase numerical model for in-situ test evaluation

Ist Teil von

• Computers and geotechnics, 2024-09, Vol.173, p.106491, Article 106491

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Membrane interface probe (MIP) is a widely used device for evaluating volatile organic compounds (VOCs) in-situ. However, its results are often regarded to be qualitative. In this paper, we present a sophisticated numerical model for refined evaluation of the in-situ test results. Our multi-phase and multi-component model is based on the mixture theory for porous media. The numerical model is validated by our own model test on a hollow soil column. Parametric studies are performed to study the effect of contaminant concentration, testing temperature, soil porosity, thermal conductivity of dry soil, and soil intrinsic permeability on MIP test. A simplified model is then proposed based on the numerical simulations. The proposed model effectively characterizes the MIP testing process, providing a solid theoretical foundation for the in-situ evaluation of VOCs.