3.2 - Rate of Mass Transfer from Sediments
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Practice Questions
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Define flux in the context of mass transfer.
💡 Hint: Think about how we measure movement of pollutants.
What does Fick’s law describe?
💡 Hint: Recall how concentration affects movement.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the main purpose of Fick's law?
💡 Hint: Think about how concentration affects movement.
True or False: Higher viscosity always leads to higher diffusion rates.
💡 Hint: Consider how thickness affects motion.
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Challenge Problems
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A river with a steady flow has pollutants entering from sediments. If the concentration gradient from the sediment to water is calculated to be 2 mg/L over a distance of 0.5m, calculate the flux using Fick's law where the diffusion coefficient is known to be 0.01 m²/s.
💡 Hint: Remember to convert units if necessary!
Explain how different velocities in a river would change the resistance to mass transfer. Illustrate with examples.
💡 Hint: Use analogies from previous examples discussed in class!
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