Environmental Quality Monitoring & Analysis, - Vol 4 | 6. Interphase Mass Transfer – Application to Environmental Interfaces by Abraham | Learn Smarter
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Knowledge
6. Interphase Mass Transfer – Application to Environmental Interfaces

The chapter delves into the fundamentals of transport phenomena, particularly focusing on molecular diffusion and bulk flow in various environmental systems. It examines how these mechanisms interact in lakes, rivers, oceans, and groundwater, highlighting scenarios where diffusion predominates over bulk flow and vice versa. Additionally, the discussion includes pollutant transport and the implications for environmental monitoring.

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Sections

  • 1

    Environmental Quality: Monitoring And Analysis

    This section discusses the principles of molecular diffusion and bulk flow in environmental systems, explaining how these concepts govern the transport of pollutants and chemicals.

    Learning Practice

  • 1.1

    Interphase Mass Transfer – Application To Environmental Interfaces

    This section explores the principles of interphase mass transfer focusing on environmental interfaces, highlighting the roles of diffusion and bulk flow in various water bodies.

    Learning Practice

  • 2

    Fundamentals Of Mass Transfer

    This section discusses the principles of mass transfer, focusing on molecular diffusion and bulk flow dynamics in environmental systems.

    Learning Practice

  • 2.1

    Molecular Diffusion

    This section discusses the concept of molecular diffusion in environmental systems, emphasizing the role of both molecular diffusion and bulk flow in mass transfer processes.

    Learning Practice

  • 2.2

    Bulk Flow

    Bulk flow, also referred to as advection, describes the mass transfer of species primarily due to velocity rather than molecular diffusion.

    Learning Practice

  • 2.3

    Advection

    This section explores advection as a mechanism of mass transfer in environmental systems, detailing its importance relative to molecular diffusion.

    Learning Practice

  • 3

    Scenarios In Environmental Systems

    This section discusses different scenarios in environmental systems affecting mass transfer, particularly how molecular diffusion and bulk flow interact and vary in freshwater and sediment environments.

    Learning Practice

  • 3.1

    Case A) Bulk Flow Negligible

    This section discusses the concept of negligible bulk flow in environmental systems, focusing on the role of molecular diffusion as the primary mass transfer mechanism.

    Learning Practice

  • 3.2

    Case B) Molecular Diffusion Negligible

    Learning

  • 4

    Examples Of Environmental Systems

    This section discusses mass transfer phenomena in various environmental systems, emphasizing the roles of molecular diffusion and bulk flow.

    Learning Practice

  • 4.1

    Lakes

    This section discusses the concept of mass transfer mechanisms in lakes, focusing on the roles of molecular diffusion and bulk flow.

    Learning Practice

  • 4.2

    Rivers

    This section discusses the fundamentals of mass transfer processes in rivers, focusing on the significance of bulk flow versus diffusion in environmental systems.

    Learning Practice

  • 4.3

    Oceans

    This section discusses the principles of mass transfer in oceans, primarily focusing on the roles of bulk flow and molecular diffusion.

    Learning Practice

  • 4.4

    Groundwater

    The section discusses the dynamics of groundwater, focusing on the transport of pollutants and the interplay between diffusion and advection.

    Learning Practice

  • 4.5

    Unsaturated Zone

    This section discusses the concept of the unsaturated zone, highlighting the modes of mass transfer, specifically diffusion and advection, in various environmental systems like lakes, rivers, and groundwater.

    Learning Practice

  • 4.6

    Sediments

    This section explores the role of sediment in environmental systems, focusing on mass transfer through diffusion and the limited role of bulk flow.

    Learning Practice

  • 5

    Transport Mechanisms In Groundwater

    This section discusses transport mechanisms in groundwater, emphasizing the roles of molecular diffusion and bulk flow (advection) in contaminant transport.

    Learning Practice

  • 5.1

    Importance Of Diffusion In Soil Systems

    This section emphasizes the crucial role of diffusion as a mechanism of mass transfer in various soil systems, particularly when bulk flow is negligible.

    Learning Practice

  • 5.2

    Capillary Action

    Capillary action describes the ability of a liquid to flow in narrow spaces without assistance and is crucial for understanding fluid movement in porous materials.

    Learning Practice

  • 6

    Historical Contamination In Sediments

    This section discusses the mechanisms of molecular diffusion and its significance in pollutant transport in sediments, particularly focusing on scenarios of historical contamination.

    Learning Practice

  • 6.1

    Diffusion Models And Predictions

    This section discusses the role of diffusion and advection in environmental transport phenomena, particularly in water and air systems.

    Learning Practice

References

45.pdf

Class Notes

Memorization

What we have learnt

  • Molecular diffusion and bul...
  • The effectiveness of diffus...
  • Understanding these transpo...

Final Test

Revision Tests