Marble chips are usually white, those do not appear to be marble, which is recrystallized limestone.
A gallery of home built hoods and fume scrubbers _hood_
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Yes but a spherical glass marble has less surface area than a structured packing like bio balls. And the surface area is what helps with retention time. Glass marbles will work if you have nothing else. I have seen whiffle balls used as well as hair curlers and short segments of PVC pipe. Just use whatever is inert and has a lot of surface area.
Yes sir, I know I have the marbles but I shared these pebble pics as Ill have to make a purchase. They come cheap. Otherwise Ill have to go miles out towards the other side of the city to get them for free..
I do have an idea of what you're saying, ive seen it too. Not as in scrubbing though but in fish tanks as bio balls.. Would these ceramic bio balls work?
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The ceramic bio balls you pictured would not work well for a few reasons. First, they are porous because their intent is to have bacterial populations grow on and in the pores. What we are looking for is a non porous substrate that is insoluble and creates a large surface area for the chemical reaction to take place. The porous ceramic bio balls will not be ideal.
You have the marbles or you have the pebbles which you showed in the photo? If you have no alternative I would use the glass marbles and not the pebbles. I am sure the staff at GRF feels terrible, as I do, that you may have to go out of your way to get glass marbles, but it is what it is.
Ohh alright alright.. it's very interesting to learn a new thing everyday.
I'm awfully grateful for the concern of the staff here as it is... Actually it was the pebbles that I had to go over to the other side but you just saved me that trip!! Although i do have the marbles I still have to find them.
As of now I'm in the process of perfecting the last end of my scrubber. I'm figuring out whether vacuum pump or venturi. I'm done testing the pump and now I need to figure out the pressure of the venturi. My diaphragm water pump gives me 5.5L/min, would that be enough to generate the required pressure to create the vacuum??
Many thanks for your time again
Edit: grammatical errors
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Hello again,
Im trying to create a spiral inside my cylinders for added retention but im facing a problem. Thep pipes tend to bend instead of the curve. What do I do to fix this issue to obtain a more of a uniform curvature all the way to the top, does anyone have an idea? The pipe im using is the orange ponaflex hose pipe 8.5mm 2250 PSI
Thanks!
Im trying to create a spiral inside my cylinders for added retention but im facing a problem. Thep pipes tend to bend instead of the curve. What do I do to fix this issue to obtain a more of a uniform curvature all the way to the top, does anyone have an idea? The pipe im using is the orange ponaflex hose pipe 8.5mm 2250 PSI
Thanks!
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Correct me if I am wrong here but is the tubing you are using is to deliver the fume to the bottom of scrubber cylinders? If so, being any longer (by being in a spiral) will not do you any measurable good. The retention time for fume in a column is the time the fume spends in contact with the chemistry in the cylinder not the time it takes to get there.
Yes sir you're absolutely correct, that is what i intend to achieve here.
Also if I'm not mistaken, I drew inspiration from one of your older posts. I dont remember where I read it but it was one of your posts where you suggested a spiralling scrubber since the tubes may also hold some chemistry being a part inside it. I hoped to achieve the same for some added retention if any.
Im only a little skeptical of the time the fumes may spend in the these cylinders, hence my thought came down to this.
The spiral riser I was referring was in an older style gas scrubber used to convert mixed cyanide gasses into sodium cyanide for analysis. The spiral was a glass upside down screw shape that allowed bubbles to spiral upward in the solution and increase the contact time. Different application but the gas being treated is exposed to the solution, your thought would not allow the contact.
Ohh alriight.. must've been a mistake. But then I carried out some earlier tests using this, and I noticed a backflow of water. Wouldn't it be possible that the tubes could infact be holding the chemistry inside it as well?
My finger is at the point where the tube is attached allowing an intake of the fumes.
