2.1. Applications of Mass Transfer

Try these first

1. 1.

   What does NAPL stand for?

   Hint

   Think about what type of liquids do not mix with water.

2. 2.

   Name the two types of NAPLs.

   Hint

   Consider their behavior relative to water.

3. 3.

   What does D-NAPL stand for?

   • Dense Non-Aqueous Phase Liquid
   • Density Normalized Aqueous Phase Liquid
   • Dense Natural Aqueous Phase Liquid

   Hint

   Focus on the characteristics of density.

4. 4.

   True or False: Light NAPLs will sink in water.

   • True
   • False

   Hint

   Think about their relationship with water density.

5. 5.

   Given a scenario of a D-NAPL spill in a river with estimated diffusion rates and sediment characteristics, calculate the expected concentration of the contaminant downstream after a set time frame.

   Hint

   Use known equations for diffusion and think about how concentrations distribute over time.

6. 6.

   Evaluate how changes in temperature and pressure might affect the behavior of D-NAPLs in sediments over an extended period of time.

   Hint

   Consider temperature effects on solubility and fluid properties.