5.2. Future Directions in Research

Try these first

1. 1.

   What is Fick's law of diffusion?

   Hint

   Think about how substances spread in different mediums.

2. 2.

   Name one factor that affects mass transfer resistance.

   Hint

   How does the thickness of a liquid affect movement?

3. 3.

   What does Fick's law of diffusion determine?

   • Rate of reaction
   • Rate of diffusion
   • Rate of temperature change

   Hint

   Consider the main focus of Fick's law.

4. 4.

   True or False: Increasing viscosity of a medium decreases mass transfer rates.

   • True
   • False

   Hint

   Think about how thicker liquids behave.

5. 5.

   Calculate the flux of a pollutant from sediment to water using given concentration values and diffusion coefficient.

   Hint

   You need values for all variables to compute flux.

6. 6.

   Design a mass balance for a hypothetical river affected by sediment pollution, detailing all variables and their impacts.

   Hint

   Use real-world cases as references for your variables.