11. Soil – Air Transfer
The chapter delves into the mechanisms of contaminant transport in sediments, focusing on processes like bioturbation and advection-diffusion models. It emphasizes the importance of flux measurement and the role of sediment properties in the remediation of contaminated sites. Various methodologies for evaluating concentration gradients and providing evidence of contamination are discussed alongside case studies of successful remediation efforts.
Enroll to start learning
You've not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- Contaminants can be transported in sediments through processes like diffusion and bioturbation.
- Measuring flux is crucial for understanding contaminant release from sediment surfaces.
- Evidence-based assessments are essential for effective remediation strategies and legal accountability.
Key Concepts
- -- Bioturbation
- The process of organism activity in sediment that results in the mixing and transport of particles.
- -- Advection
- The transport of a substance through a medium, often caused by the movement of the medium itself, such as water flow.
- -- Flux Measurement
- The determination of the quantity of contaminants being released from a surface over a specific period.
- -- Concentration Gradient
- The change in concentration of a substance across a distance, indicating the direction of contaminant movement.
Additional Learning Materials
Supplementary resources to enhance your learning experience.