Environmental Quality Monitoring & Analysis, - Vol 5 | 5. Contamination of Sediments by Abraham | Learn Smarter
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5. Contamination of Sediments

The chapter focuses on the dynamics of sediment contamination in environmental systems, particularly the interaction between solid sediments and liquid phases. It explains mechanisms such as dissolution and diffusion that govern the spread of dense and light non-aqueous phase liquids (NAPLs) in aquatic environments. It also discusses the implications of historical contamination and the complexities of modeling sediment-water interfaces for effective remediation strategies.

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Sections

  • 1

    Environmental Quality: Monitoring And Analysis

    This section discusses the behavior and transport mechanisms of contaminants in sediment-water systems, focusing on dense and light non-aqueous phase liquids (NAPLs) and their implications for environmental quality.

    Learning Practice

  • 1.1

    Contamination Of Sediments

    This section focuses on understanding the contamination of sediments due to chemical spills, particularly the behaviors of dense and light non-aqueous phase liquids (NAPLs) in sediment-water systems.

    Learning Practice

  • 2

    Mass Transfer In The Environment

    This section discusses mass transfer processes in sediments, particularly focusing on the behavior of non-aqueous phase liquids (NAPLs) and their interaction with sediment and water.

    Learning Practice

  • 2.1

    Applications Of Mass Transfer

    This section discusses the applications of mass transfer phenomena in environmental contexts, particularly focusing on sediment and its interaction with contaminants.

    Learning Practice

  • 2.2

    Sediment-Water System

    This section explores the interaction between sediments and water, focusing on contamination processes involving non-aqueous phase liquids (NAPLs) and their behavioral dynamics.

    Learning Practice

  • 2.3

    Dense Non-Aqueous Phase Liquids (D-Napl And L-Napl)

    This section discusses the properties and behaviors of dense non-aqueous phase liquids (D-NAPL) and light non-aqueous phase liquids (L-NAPL) in sediment and water systems, particularly focused on their transport and dissolution characteristics.

    Learning Practice

  • 2.4

    Fate And Transport Of Contaminants

    This section explores how contaminants, especially dense and light non-aqueous phase liquids (DNAPLs and LNAPLs), interact with sediments and water, detailing their mechanisms of dissolution, diffusion, and impacts on environmental quality.

    Learning Practice

  • 2.5

    Dissolution And Percolation

    This section explores the processes of dissolution and percolation in sediments, particularly focusing on the behavior of Non-Aqueous Phase Liquids (NAPLs) in water-sediment systems.

    Learning Practice

  • 2.6

    Modeling And Flux Calculation

    This section covers the principles of modeling mass transfer between sediment and water, focusing on dense non-aqueous phase liquids (D-NAPL) and their behavior in contaminated environments.

    Learning Practice

  • 2.7

    Equilibrium Between Sediment And Pore Water

    This section delves into the dynamics between sediments and pore water, focusing on the transport mechanisms involved when contaminants interact with this environment.

    Learning Practice

  • 3

    Contaminated Sites And Historical Liability

    This section discusses the impact of contaminated sediments on environmental quality, highlighting the mechanisms of contamination, diffusion, and historical liability associated with cleanup responsibilities.

    Learning Practice

  • 3.1

    Duration Of Contamination

    This section discusses the processes and implications of sediment contamination, focusing on the fate of dense and light non-aqueous phase liquids (NAPLs) in the sediment-water interface over time.

    Learning Practice

  • 3.2

    Liability Issues

    This section highlights the complexities of historical contamination of sediments and the associated liability issues.

    Learning Practice

  • 4

    Flux Calculations At The Sediment-Water Interface

    This section discusses the dynamics of sediment-water interfaces, particularly focusing on flux calculations involving dense and light non-aqueous phase liquids (NAPLs).

    Learning Practice

  • 4.1

    Defining Flux

    This section discusses the concepts of flux in relation to sediment contamination, emphasizing the differences between D-NAPL and L-NAPL and their behavior in sediment-water interfaces.

    Learning Practice

  • 4.2

    Concentration Gradient And Diffusion

    This section explores the concept of concentration gradient and diffusion, particularly focusing on the interaction of sediment with liquids and the mechanics of contaminant spread in aquatic environments.

    Learning Practice

  • 4.3

    Unsteady State Process

    This section discusses the unsteady state processes involved in the interaction between sediment and water during contamination scenarios, with a focus on mass transfer mechanisms and the behavior of dense non-aqueous phase liquids (DNAPLs).

    Learning Practice

  • 5

    Modeling The System

    This section discusses how contaminants behave in sediment environments, including the interaction between dense and light non-aqueous phase liquids (NAPLs) and sediment-water interfaces.

    Learning Practice

  • 5.1

    Control Volume Approach

    The section delves into the control volume approach for analyzing sediment-water interfaces, focusing on the behavior of non-aqueous phase liquids (NAPLs) during contamination events.

    Learning Practice

References

55.pdf

Class Notes

Memorization

What we have learnt

  • Understanding sediment-wate...
  • Dissolution and diffusion a...
  • Historical contamination ca...

Final Test

Revision Tests