This is awesome.

I think the best way to implement this device into your exhaust would be to have the scrubber, then the inline fan, then the ducting, then the exhaust port.

(Scrubber)(Inline Fan)(Ducting)(Exit Port)

I'm gonna make a few of these!

:rastasmoke:

With a few modifications (making the carbon chamber perpendicular to the airflow and using a solid material as the outer layer) you could make one of these to work "inline." THe filter would lose surface area, however.