A friend is a breeder of parrots, and always gripes about air quality and low humidity. After a bit of reading about "biowalls" (an area into which I am selling a lot of EcoWeb), it appears that mycorrhizal fungi living in plant roots are effective at capturing and consuming volatile organic compounds.
I built a prototype that has a sump containing a pump and heater, an EcoWeb growing panel, and a fan in the top to draw air through the panel and root systems of the plants.
It seems to me that this could be a nice self-sustaining "mount" for orchids, as well, so that may be the next one, but I probably won't have the fan drawing air through the growing panel, and will run the pump periodically via a timer, rather than continuously.
If interested, you can read more about this
HERE.
I have found a local company that can fabricate the "working part" (without the wooden cabinet) for me from black polyethylene (the prototype is Plexiglass and was way too expensive), but before I put that in motion, I thought I'd bounce the idea off of you folks for feedback.