Environmental Engineering Reference
In-Depth Information
16. If you were to use an air cleaner at home to reduce your exposure to allergens,
what factors should you consider before you purchase it?
17. What are the advantages and disadvantages of using in-duct dust air cleaners?
18. Describe air cleaning principles used in clean rooms.
19. What chemical/physical processes can be used to remove gas/vapor contam-
inants in indoor air?
20. Describe sorbent use in air cleaning.
21. What properties of activated carbons affect their performance in air cleaning
applications?
22. Describe the movement of contaminant vapors through an activated sorbent
bed.
23. How can one determine when an activated carbon sorbent bed filter needs
to be replaced?
24. Describe how the catalytical properties of activated carbons can be used for
specific air cleaning applications.
25. What is chemisorption? Describe a specific application.
26. What factors limit the performance of free-standing air cleaners using sorp-
tion/chemisorption principles in residential air cleaning?
27. Describe botanical air cleaning and its limitations.
28. Why is ozonation an undesirable air cleaning practice?
29. How may air cleaners be a source of indoor contaminants?
