Since about 1991 I have hand built venturi filtration systems for my salt water reef tanks.
When I started recovering and refining I discovered that because I was doing it on a small scale, I had to build most of my own equipment with the exception of things like a fume hood, etc.
I built a venturi wet fume scrubber that draws at 10cfm which is more than enough for several large reaction vessels, then I recover the solution from the scrubber which is basically weak nitric acid, and use it for other parts of my process. If you ever get to the point where you need to build a wet venturi fume scrubber for your idea, let me know. I would be more than happy to help.
Scott
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