5. Introduction to Interphase Mass Transfer
This chapter focuses on the principles of interphase mass transfer, particularly in environmental contexts. It explores various scenarios of mass transfer, such as chemical release from a surface into different mediums including air, water, and soil. Additionally, it discusses the implications of these processes for understanding environmental impacts and contamination over time.
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What we have learnt
- Mass transfer involves the movement of substances between different phases.
- Molecular diffusion and bulk motion are two distinct mechanisms of mass transfer.
- The rate of mass transfer can be influenced by factors such as concentration gradients and medium properties.
Key Concepts
- -- Mass Transfer
- The movement of substances from one phase to another, crucial for understanding environmental contamination.
- -- Molecular Diffusion
- The process by which molecules move from an area of higher concentration to an area of lower concentration without external agitation.
- -- Bulk Motion
- The transport of substances due to the movement of the medium itself, such as water in a river.
- -- Chemical Potential
- A measure of how the availability of a substance influences its tendency to move, playing a crucial role in diffusion.
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