Practice Modeling And Flux Calculation (2.6)

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6 sample questions

Question 1.
What does D-NAPL stand for?
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Think about the density comparison with water.
Question 2.
Which is denser, D-NAPL or L-NAPL?
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Visualize how each type behaves in water.
3Question 3.
What is a D-NAPL?
- A type of solid
- A dense liquid
- A gas
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Remember the density comparison.
4Question 4.
True or False: L-NAPL can be found below the water surface.
- True
- False
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Think about the behavior of lighter substances in water.
Question 5.
You have an area where D-NAPL was released into a river with a known flux. Calculate how long it would take for the concentration to stabilize at the sediment-water interface if the diffusion coefficient is given as X m²/s.
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Consider using Fick's law for diffusion calculation.
Question 6.
Analyze the historical sediment contamination in a city river, evaluating how changes in industrial practices over decades have reduced recent fluxes of contaminants.
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Correlate industrial changes with sediment contamination patterns.

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