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Improved environmental multimedia modeling and its sensitivity analysis.
Jing Yuan1, Maria Elektorowicz, Zhi Chen
1The Department of Building, Civil, and Environmental Engineering, Concordia University, Montreal, Quebec, Canada, H3G 1M8.
Summary
This study introduces an improved environmental multimedia model for pollutant transport. The new model shows reduced flux in soil and groundwater, with benzene primarily partitioning to air from landfills.
Area of Science:
- Environmental Science
- Environmental Modeling
- Pollutant Transport
Background:
- Environmental multimedia modeling is complex, involving numerous interconnected factors.
- Accurate modeling is crucial for understanding pollutant fate and transport.
- Traditional models face challenges in representing intricate environmental systems.
Purpose of the Study:
- To develop an improved environmental multimedia model.
- To analyze pollutant behavior, specifically benzene flux from landfills.
- To investigate model sensitivity and optimize parameters.
Main Methods:
- Development of an enhanced environmental multimedia model.
- Comparison with standard numerical and analytical methodologies.
- Sensitivity analysis of model parameters, including Peclet number (Pe).
Main Results:
- The improved model shows lower flux in unsaturated and groundwater zones compared to traditional models.
- Approximately 90% of benzene flux from landfills partitioned to air, with 10% to soil/groundwater under non-uniform conditions.
- Decreasing Peclet number (Pe) eliminated oscillatory behavior in transport.
Conclusions:
- The enhanced model effectively simulates complex pollutant fate and transport.
- Sensitivity analysis aids in optimizing model parameters for accurate predictions.
- The model provides a valuable tool for environmental impact management.
