Membranes - Introduction to Carbon Capture and Sequestration - page 348

Section 7
Review
7.1. Reading self-test
1. To separate viruses, one would need a membrane with pores of
a diameter (in microns):
a. 100-1,000
b. 10-100
c. 1-10
d. 0.1-1
e. 0.01-0.1
2. Which statement is not correct for a one stage membrane sepa-
ration in which the permeation of one component (A) is fi xed
and the other (B) can be tuned independently?
a. The higher the selectivity, the larger the membrane
b. The maximum achievable concentration of component A in
the permeate is independent of the quality of the membrane
c. The optimal membrane selectivity is a trade-off between
purity and the required pressure