During the CO2 capturing process, certain impurities like NOx need to be
efficiently eliminated. Patented Pentair NOxFlash Technology helps to
remove the risk of contaminating the liquid CO2 with NOx. This approach
provides an efficient alternative to the traditional method of removing NOx
from the CO2 that entails scrubbing the gas with a potassium permanganate
(PPM) solution. PPM is a strong oxidizing chemical that requires caution
in handling of both the initial chemical solution and its waste by-products.
Use of such substances could create additional plant resource burdens as
they may entail more considerations such as worker safety due to exposure
precautions, environmental concerns due to disposal procedures and other
costs such as supply due to more regulated import/export. By avoiding the
use of PPM in the process, plants may avoid these issues, thereby alleviating
these potential costs and other resource factors.