abaddown
New member
- Joined
- Apr 12, 2014
- Messages
- 4
I have two 12 liter borosilicate round bottom boiling flasks that I intend to use for the refining of gold with aqua regia (gold extracted from e-scrap via other processes and karat scrap). I intend to mount a reflux condenser on each and draw any fumes through a series of scrubbing vessels with a vacuum pump that draws approximately, 1 cfm.
My question, however, is what to do to combat trace fumes that may manage to escape my apparatus. I've been scouring the internet for data on proper lab grade full room ventilation for trace fumes and none of the papers I've found seem to come to any concrete conclusions. I was thinking I would mount a couple thousand cfm worth of blowers venting the room's atmosphere and call it a day, but I'd like to be more precise. A fume hood strikes me as an inappropriate measure for this sort of situation...why build a fume hood for large closed systems when you can just vent the whole room to negate any trace fumes? The room is approximately 700 cf. I also have access to a supplied air respirator and a full body Tychem F suit, but I would rather not allow vapors to accumulate in my lab for obvious reasons.
In short, why not turn my entire lab into one big fume hood...so to speak. If anyone has an idea of the calculations involved, please advise. I have 4metals's spreadsheet for calculating the cfm requirements of a fume hood and the resultant scrubber size, but I am not sure how this applies to an entire room.
Thanks.
My question, however, is what to do to combat trace fumes that may manage to escape my apparatus. I've been scouring the internet for data on proper lab grade full room ventilation for trace fumes and none of the papers I've found seem to come to any concrete conclusions. I was thinking I would mount a couple thousand cfm worth of blowers venting the room's atmosphere and call it a day, but I'd like to be more precise. A fume hood strikes me as an inappropriate measure for this sort of situation...why build a fume hood for large closed systems when you can just vent the whole room to negate any trace fumes? The room is approximately 700 cf. I also have access to a supplied air respirator and a full body Tychem F suit, but I would rather not allow vapors to accumulate in my lab for obvious reasons.
In short, why not turn my entire lab into one big fume hood...so to speak. If anyone has an idea of the calculations involved, please advise. I have 4metals's spreadsheet for calculating the cfm requirements of a fume hood and the resultant scrubber size, but I am not sure how this applies to an entire room.
Thanks.