3. Mass Transfer in Contaminated Systems

Try these first

1. 1.

   What does Fick's Law describe?

   Hint

   Recall the equation involving flux.

2. 2.

   Name one factor that affects diffusion.

   Hint

   Think about the medium the substance is moving through.

3. 3.

   What is the primary principle described by Fick's Law?

   • Flux proportional to temperature
   • Flux proportional to concentration gradient
   • Flux independent of concentration

   Hint

   Think about how substances tend to move.

4. 4.

   True or False: Lower density of a medium increases resistance to diffusion.

   • True
   • False

   Hint

   Consider how substances move through dense vs less dense mediums.

5. 5.

   Calculate the time it takes for a pollutant to diffuse through a sediment layer given a specific diffusion coefficient.

   Hint

   Remember, more concentration difference means faster flux.

6. 6.

   Discuss how a change in temperature affects pollutant behavior in water using the concepts learned.

   Hint

   Relate it to kinetic energy focusing on particle movement.