Problem 15
What is meant by a soil's cation-exchange capacity? What are its common units?
Problem 18
Describe the processes by which soil in arid areas becomes salty and alkaline.
Problem 19
What do the terms sediments and pore water mean?
Problem 22
Describe how mine tailings are usually stored and how this represents a potential environmental problem.
Problem 23
How can sediments contaminated by heavy metals be remediated so they can be used on agricultural fields?
Problem 24
Describe two ways by which contaminated sediments can be treated without removing the sediments themselves.
Problem 25
List the three categories of technologies commonly used to remediate contaminated soils. Give examples of each.
Problem 28
Define phytoremediation and list the three mechanisms by which it can operate. What are hyperaccumulators?
Problem 33
Explain the advantages and disadvantages of supercritical water oxidation for the destruction of hazardous wastes.
