gbaldwin75
Active member
what kind of material would i use in the in line filter for my fume hood?
filter material?
- Thread starter gbaldwin75
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Harold?
Noxx
Well-known member
Does activated charcoal can be used ?
I know it cuts the odours but what about NOx gases ?
I know it cuts the odours but what about NOx gases ?
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My purpose in filtering was strictly to recover values, not to control other emissions. For that purpose, I used fiber glass furnace filters, which incinerated well, and became a vital part of the chemistry for the succeeding melting process (I added silica to my flux, so the filters became part of the added silica).
I had long considered doing something with the fumes, but I sold the business before taking any action. Sorry----I don't have much to add.
Harold
I had long considered doing something with the fumes, but I sold the business before taking any action. Sorry----I don't have much to add.
Harold
Shor once sold a self-contained AR refining machine that used separate limestone and charcoal fume filters to kill the acid and the NOx, respectively. However, someone once told me that charcoal/NOx reactions can start fires.
Charcoal is good for organic solvent vapors, not for much else.
A PVC pipe packed with lime would probably be one of the best for this acid vapor neutralization.
Most fume hoods in commercial labs don't even bother, they just exhaust :-/
There are threads on http://sciencemadness.org/talk that have info on building fume hoods/cupboards which implement both charcoal and Ca(OH)2.
A PVC pipe packed with lime would probably be one of the best for this acid vapor neutralization.
Most fume hoods in commercial labs don't even bother, they just exhaust :-/
There are threads on http://sciencemadness.org/talk that have info on building fume hoods/cupboards which implement both charcoal and Ca(OH)2.
Irons
Well-known member
What they call play sand is coarsely ground Marble (Calcium Carbonate) Its only a couple of bucks a bag. It's coarse enough to use as a filter.
I took a piece of fiberglass window screen, put in a pound or so and keep it in the inlet funnel of my stockpot. It neutralizes any acid fumes that leak out. It's also handy to kill any spills.
I took a piece of fiberglass window screen, put in a pound or so and keep it in the inlet funnel of my stockpot. It neutralizes any acid fumes that leak out. It's also handy to kill any spills.
